Edward Simpson and David Riese at SWC outcropDr. Edward Simpson
Chairperson, Department of Physical Sciences
Professor of Geology

Publications  (* indicates student co-author)



Search for the truth is the noblest occupation of man;
its publication is a duty.
-- Madame de Stael


 
Papers Submitted

Fillmore, D.L., Lucas, S.G., Simpson, E.L., Submitted April, 2010, The fish swimming trace Undichna from the Mississippian Mauch Chunk Formation, Eastern Pennsylvania, Ichnos.

 

Simpson, E.L., Hilbert-Wolf, H.L., Wizevich, M.C., Tindall, S.E., January 2010, Implications of the Internal Plumbing of A Late Cretaceous Sand Blow: Grand Staircase-Escalante National Monument, Utah: Titus, A., ed. Paleontology and Geology of the Cretaceous Interior seaway.

 

*Storm, L., *Needle, M.D., *Smith, C.J., Fillmore, D. L., Szajna, M., Simpson, E.L., Lucas, S. G., February 2010, An upper Mississippian vertebrate burrow from the Mauch Chunk Formation, Eastern Pennsylvania: Palaeogeography, Palaeoclimatology, Palaeoecology.

 

*Moran, K., Hilbert-Wolf, H.L., Golder, K., *Malenda, H.F., *Smith, C.J., *Storm, L.P., Simpson, E.L., Wizevich, M.C., Tindall, S. E., Submitted April 2010, Implications of the wood-boring trace fossil Asthenopodichnium xylobiotum in the Late Cretaceous Wahweap Formation, Utah, USA: Palaeogeography, Palaeoclimatology, Palaeoecology.


Papers in Refereed Journals and Special Publications

Simpson, W.S., Simpson, E.L., Wizevich, M.C., *Malenda, H.F., Hilbert-Wolf, H.L., Tindall, S.E., 2010. A preserved Late Cretaceous biological soil crust in the capping sandstone member, Wahweap Formation, Grand Staircase-Escalante National Monument, Utah, Palaeoclimatic implications. Sedimentary Geology.

 

Fillmore, D.L., Lucas, S.G., Simpson, E.L., 2010, Invertebrate trace fossils in semi-arid to arid braided-ephemeral river deposits of the Mississippian middle member of the Mauch Chunk Formation, eastern Pennsylvania, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, 292, p. 222-244.

 

Simpson, E. L., Hilbert-Wolf, H. L., Wizevich, M.C., Tindall, S.E., *Fasinski, B. R., *Storm, L. P., and *Needle, M.D., 2010, Predatory Digging Behavior in Dinosaurs: Geology, v. 38, p. 699-702.

 

Tindall, S.E., *Storm, L.P., *Jenesky, T.A., Simpson, E.L., 2010, Growth faults in the Kaiparowits basin, Utah, pinpointing initial Laramide uplift in the western Colorado Plateau: Lithosphere, v. 2, 221-230.

 

Lucas, S. G., Fillmore, D.L., and Simpson, E.L., 2010, The Mississippian tetrapod footprint Palaeosauropus: Extramorphological variation and ichnotaxonomy: Ichnos.

 

Lucas, S. G., Fillmore, D.L., and Simpson, E.L., 2010, Amphibian body impressions from the Mississippian of Pennsylvania, USA: Ichnos.

 

Simpson, E.L., Hilbert-Wolf, H.L., Wizevich, M.C., Lucas, S.G., *Tester, E., Tindall, S.E., *Bernard, J.J., 2010, A Crocodylomorph trace in the Late Cretaceous capping sandstone member of the Wahweap Formation in Grand Staircase-Escalante National Monument, Utah, In, Milán, J., Lucas, S.G., Lockley, M.G., and Spielmann, J.A. editors, Crocodile tracks and traces: New Mexico Museum of Natural History and Science Bulletin 51, p. 165-169

 

Eriksson, K.A., and Simpson, E.L., 2010, Precambrian tidal facies, In, Davis, R.A., and Dalrymple, R.W., eds., Tidal Sedimentology, Springer.

 

Simpson, E.L., Wizevich, M.C., Hilbert-Wolf, H.L., Tindall, S.E., *Bernard, J.J., Simpson, W.S., 2009, An Upper Cretaceous sag pond deposit: Implications for the recognition of local seismicity and surface rupture along the Kaibab Monocline, Utah: Geology, v. 37. p 967-970.

 

Fillmore, D. L., Simpson, E. L., and Lucas, S. G., 2009, Issac Lea’s Palaeosauropus (=Sauropus”) primaevus: a review of his discovery: Ichnos v. 16, p. 220-229. (DOI: 10/1080/10420940802686152)

 

Hilbert-Wolf, H.L., Simpson, E.L., Simpson, W.S., Tindall, S.E., Wizevich, M. C., 2009, Insights into syndepositional fault movement in a foreland basin; trends in seismites of Upper Cretaceous Wahweap Formation, Kaiparowits Basin, Utah, U.S.A.: Basin Research, v. 21, p. 856-871.

 

Simpson, E. L., Hilbert-Wolf, H. L., Simpson, W.S., Tindall, S. E., *Bernard, J. J., *Jenesky, T. A., and Wizevich, M. C., 2008, The interaction of aeolian and fluvial processes during deposition of the Upper Cretaceous capping sandstone member, Wahweap Formation, Kaiparowits Basin, Utah, U.S.A.: Palaeogeography, Palaeoclimatology, Palaeoecology, v 270. p. 19-28.

 

Eriksson, P. G., Long, D. G. F., Bumby, A. J., Eriksson, K. A., Simpson, E. L., Catuneanu, O., Claassen, M., Mtimkulu, Mudziri, K.T., M. N., Brümer, J. J., and van der Neut, M., 2008, Palaeohydrological data from the 2.0-1.8 Ga Waterburg Group, South Africa: Discussion of a possible unique Palaeoproterozoic fluvial style: South African Journal of Geology, v. 111, p. 183-206.

 

Lucas, S. G., Fillmore, D. L., Simpson, E. L., and Sullivan, R. M., 2007, The geologic age of Isaac Lea’s footprints from Mount Carbon: A forgotten chapter in the history of science in Pennsylvania: Pennsylvania Heritage, v. 33, no. 3, p. 26-35.

 

Fillmore, D.L., Simpson, E. L., and Lucas, S. G., 2007, Isaac Lea and the discovery of ancient footprints: Pennsylvania Geology, v. 37, no. 1, p. 5-11.

 

Eriksson, K.A., Simpson, E. L., and Mueller, W., 2006, An unusual fluvial to tidal transition in the Mesoarchean Moodies Group, South Africa: A response to high tidal range and active tectonics: Sedimentary Geology, v. 190, 13-24.

 

Noffke, N., Eriksson, K. A., Hazen, R. E., and Simpson, E. L., 2006, A new window into early life: Microbial mats in Earth’s oldest siliciclastic tidal flats (3.2 Ga Moodies Group, South Africa): Geology, v. 34. 253-256.

 

Eriksson, K.A., Simpson, E.L, Master, S. E., and Henry, G., 2005, Neoarchean (c. 2.58) Halite cast: Implications for palaeoceanic chemistry: Journal of the Geological Society of London, v. 162, no. 5, p. 789-799.

 

Simpson, E.L., Eriksson, K.A., Kuklis, C.A.,* Eriksson, P.G., Bumby, A.J., and Jaarsveld, C.F., 2004, Saline pan deposits, the ~1.8  Makgabeng Formation, Waterberg Group, South Africa: Sedimentary Geology, v. 163, p. 279-292.

 

Simpson, E.L., Bose, P., Alkmim, F.F., Rainbird, R., Martins-Neto, M., Bumby, A., Eriksson, P.G., Eriksson, K.A., and Middleton, L., 2004, Oldest eolian deposits, earliest c. 1.8 Ga ergs and Proterozoic erg dynamics, in Eriksson, P.G., Alterman, W., Nelson, D., Mueller, W., and Catuneanu, O., eds, The Precambrian Earth: Tempos and Events: Developments in Precambrian Geology 12, Elsevier, Amsterdam, 642-657.

 

Eriksson, K.A., and Simpson, E.L., 2004, Precambrian Tidalites: Recognition and Significance, in Eriksson, P.G., Alterman, W., Nelson, D., Mueller, and W., Catuneanu, O., eds, The Precambrian Earth: Tempos and Events: Developments in Precambrian Geology 12, Elsevier, Amsterdam, p. 631-642.

Simpson, E.L., Eriksson, K.A., Eriksson, P.G., and Bumby, A.J., 2002, Eolian dune degradation and generation of massive sandstones in the Paleoproterzoic Makgabeng Formation, Waterberg Supergroup, South Africa: - Journal of Sedimentary Research, v. 72, p. 40-45.

 

Simpson, E.L., Dilliard, K.A.*, Higgins, D*. and Rowell, B. F., 2002, The Fluvial-to-Marine Transition within the Post-rift Lower Cambrian Hardyston Formation, Eastern Pennsylvania: Sedimentary Geology, v. 147, p. 127-142. (most downloaded article at Sedimentary Geology through Dec 04)

 

Eriksson, K.A., and Simpson, E.L., 2001, Quantifying the oldest tidal record: The 3.2 Ga Moodies Group, Barberton Greenstone Belt, South Africa - Reply: Geology, v. 29, p. 1159-1160.

 

Eriksson, K.A., and Simpson, E.L., 2000, Quantifying the oldest tidal record: The 3.2 Ga Moodies Group, Barberton Greenstone Belt, South Africa: Geology, v. 28, p. 831-834.

 

Eriksson, P.G., Simpson, E.L., Eriksson, K.A. Bumby, A.J., Steyn, G.L., and Sarkar, S., 2000, Muddy roll-up structures in clastic playa beds of the c. 1.8 Ga Waterberg Group, South Africa, Palaios, v. 15, p. 177-183.

 

*Dilliard, K.A., Simpson, E.L., *Noto, R.C. and Wizevich, M.C., 1999, Characterization of fluvial systems associated with flood basalt volcanism, Neoproterozoic Catoctin Formation, Northern Virginia, U. S. A.: Precambrian Research, v. 97, p. 115-134.

 

*Dilliard, K.A., Simpson, E.L., and *Noto, R.C., 1999, The Neoproterozoic Paleosurface and associated colluvial and fluvial deposits, Shenandoah National Park, Virginia: Southeastern Geology, v. 38, p. 239-257.

 

Eriksson, K.A., and Simpson, E.L., 1998, Controls on spatial and temporal distribution of Precambrian eolianites: Sedimentary Geology, v. 120, p. 275-294.

 

Driese, S.G., Simpson, E.L., and Eriksson, K.A., 1995, Redoximorphic paleosols in alluvial and lacustrine deposits, 1.8 Ga Lochness Formation, Mount Isa, Australia: Pedogenic processes and implications for paleoclimate: Journal of Sedimentary Research, v. A65, p. 675-689.

 

Walker, D., Simpson, E.L., Driese, S.G., 1994, Paleogeographic influences on sandstone composition along an evolving passive margin: An example from the basal Chilhowee Group (uppermost Proterozoic to Lower Cambrian) of the south central Appalachians: Journal of Sedimentary Research, A64, p. 807-814.

 

*Skoog, S.Y., Venn, C., and Simpson, E.L., 1994, Distribution of Diopatra cuprea across modern tidal flats: implications for Skolithos: Palaios, v. 9, p. 188-201.

 

Eriksson, K.A., Simpson, E.L., and Jackson, M.J., 1994, Stratigraphic Evolution of a Proterozoic synrift to post-rift basin, Constraints on nature of lithospheric extension in the Mount Isa Inlier, Australia, In: Steel, R., and Frostiak, L., eds. Tectonics and Sedimentation International Association of Sedimentologists Special Publication No. 20, p. 203-221.

 

Loope, D.B, and Simpson, E.L., 1993, Reply - Significance of thin sets of eolian cross-strata: Journal of Sedimentary Petrology, v. 63, p. 1170-1171.

 

Eriksson, K.A., and Simpson, E.L., 1993, Siliciclastic Braided-alluvial Sediments Intercalated within Continental Flood Basalts in the Early to Middle Proterozoic Mount Isa Inlier, Australia: In, Puigdefabregas, C., ed. Alluvial Sedimentology, International Association of Sedimentologists Special Publication No 17, p. 473-488.

 

Simpson, E.L., and Eriksson, K.A., 1993, Thin-bedded eolianites interbedded within a fluvial and marine succession: Early Proterozoic Whitworth Formation, Mount Isa Inlier, Australia: Sedimentary Geology, v. 87, p. 39-62.

 

Simpson, E.L., Walker, D., and *Horsnall, S., 1993, Outer shelf to lower shoreface sediments in the lower Cambrian Harpers Formation; Chilhowee Group, south-central Pennsylvania: Northeastern Geology, v. 15, p. 126-136.

 

Loope, D.B, and Simpson, E.L., 1992, Significance of thin sets of eolian cross-strata: Journal of Sedimentary Petrology, v. 62, p. 849-859.

 

Simpson, E.L., and Eriksson, K.A., 1991, Depositional facies and controls on parasequence development in siliciclastic tidal deposits from the Early Proterozoic upper Mount Guide Quartzite, Mount Isa Inlier, Australia, In, Smith, D.G., Reinson, G.E., Zaitlin, B.A., and Rahmani, R.A., Eds., Clastic Tidal Sedimentology: Canadian Society of Petroleum Geologists Memoir No. 16., 371-387.

 

Simpson, E.L., 1991, An exhumed Lower Cambrian tidal flat: The Antietam Formation, central Virginia, U. S. A, In, Smith, D. G., Reinson, G. E., Zaitlin, B. A., and Rahmani, R. A., Eds., Clastic Tidal Sedimentology: Canadian Society of Petroleum Geologists Memoir No. 16., p 123-134.

 

Jackson, M.J., Simpson, E.L., and Eriksson, K.A., 1990, Facies and sequence stratigraphic analysis in an intracratonic, thermal-relaxation basin: The Early Proterozoic, lower Quilalar Formation and Ballara Quartzite, Mount Isa Inlier, Australia: Sedimentology, v. 37, p. 1053-1078.

 

Eriksson, K.A., and Simpson, E.L., 1990, Recognition of high-frequency sea-level fluctuations in Proterozoic siliciclastic tidal deposits, Mount Isa, Australia: Geology, v. 18, p. 474-477.

 

Simpson, E.L., and Eriksson, K.A., 1990, Early Cambrian progradational and transgressive sedimentation patterns in Virginia: an example of the early history of a passive margin: Journal of Sedimentary Petrology v. 60, p. 84-100.

 

Simpson, E.L., and Eriksson, K.A., 1989, Rift to incipient passive margin sedimentation, Late Proterozoic to Early Cambrian Unicoi Formation, central and southern Virginia: Geological Society of America Bulletin, v. 101, p. 42-54.

 

Simpson, E.L., and Sundberg, F.L., 1987, Early Cambrian age for synrift deposits of the Chilhowee Group of southwestern Virginia: Geology, v. 15, p. 123-126.

 

Simpson, E.L., and Loope, D.B., 1985, Amalgamated interdune deposits, White Sands, New Mexico: Journal of Sedimentary Petrology, v. 55, p. 361-365.

Field Guide Books

Frantz, A. R., Simpson, E. L., and Freudenberger, D. W., 2006, Journey into Anthracite, in Pazzaglia, F. J., ed., Excursions in Geology and History: Field trips in the Middle Atlantic States: Geological Society of America Field Guide 8, p. 239-247 doi: 10-1130/2006.fld008(13).

 

Rankin, D., Miller, J., and Simpson, E.L., 1994, The Geology of the Mount Rogers Area, southwestern Virginia Blue Ridge and Unaka Belt, in Schultz, A. and Henika, B., eds., Field guides to Southern Appalachian Structure, Stratigraphy and Engineering Geology: Guidebook to 1994 Southeastern Geological Society of America Meeting, Virginia Tech Department of Geological Sciences Guidebook Number 10, p. 127-176.

 

Walker, D., and Simpson, E.L., 1991, Stratigraphy of Upper Proterozoic and Lower Cambrian clastic rocks, southwestern Virginia and northeastern Tennessee, in Schultz, A., and Compton-Gooding, E., eds. Geological evolution of the eastern United States: Virginia Museum of Natural History Guidebook Number 2, p. 121-159.

Papers in Non-refereed Publications

Jackson, M.J., Simpson, E.L., and Eriksson, K.A., 1989, Tides, Rifts, and Sequence Stratigraphy at Mount Isa: Australian Bureau of Mineral Resources Research News, v. 10, p. 10-12.

 

Simpson, E.L., and Eriksson, K.A., 1987, Constructional and destructional facies sequences within the Early Cambrian Hampton and Erwin Formations Central and Southern Virginia: Appalachian Basin Industrial Associates, v. 12, p. 5-21.

 

Chambliss, C.R., *Butz, J.J., and *Simpson, E.L., 1979, Photoelectric Minima of RZ Cassiopeia: Information Bulletin on Variable Stars No. 1619, Konokoly Observatory, Budapest, Hungary.

University Laboratory Manuals

Simpson, E.L., 1990, 1992, 1994, 1996, 1998, 2000, 2002, Laboratory Manual for Paleontology.

 

Rowell, B.F., and Simpson, E.L., 1990-2000, Environmental Geology.

Extended Abstracts of Papers or Posters Sessions Presented Before Professional Societies

Simpson, E.L., and Eriksson, K.A., 1990, Aeolian and fluvial interaction: The Early Proterozoic Whitworth Formation, Mount Isa Inlier, Australia: 13th International Association of Sedimentologists Abstracts - Posters, Nottingham, England, p. 204.

 

Eriksson, K.A., Simpson, E.L., and Jackson, M.J., 1990, Stratigraphic evolution of a Proterozoic thermal-relaxation basin Mount Isa Inlier, Australia: Implications for rift tectonics: 13th International Association of Sedimentologists Abstracts - Papers, Nottingham England, p. 155-156.

 

Simpson, E.L., and Eriksson, K.A., 1989, Depositional Processes and sea level control on sequence and parasequence development in the early Cambrian Hampton and Erwin Formations of Virginia, U.S.A.: an example of the early history of a passive margin:  28th International Geological Congress Abstracts, v. 3, p. 120-121.

 

Eriksson, K.A., Jackson, M.J., and Simpson, E.L., 1989, Continental and shallow-marine sedimentation in an intercratonic sag basin: The 1.75 Ga Qulalar Formation, Mount Isa Orogen, Queensland, Australia: 28th International Geological Congress Abstracts, v. 1, p. 456-457.

 

Eriksson, K.A., Simpson, E.L., and Jackson, M.J., 1988, Relative sea level control on sequence development: Examples from Cambrian and Middle Proterozoic outcrops, in Palaeogeography, Sea Level & Climate: 88 Bureau of Mineral Resources Research Symposium, Record No. 1988/42, p. 66-68.

Abstracts of Invited Papers Presented Before Professional Societies

Eriksson, K. A., and Simpson, E. L., 2010, Earth’s earliest terrigenous sedimentary environments: Evidence from the Barberton Greenstone Belt, South Africa and the Jack Hills Belt, Australia: in, Noffke, N. and Chafetz, G., Eds., SEPM Field Conference – Microbial mats in siliciclastic deposits (Archean to Today), p. 19.

Eriksson, K. A., and Simpson, E. L., 2002, Keynote: Precambrian Tidalites: Recognition and Significance: International Association of Sedimentologists, 16th International Sedimentological Congress, Rand Afrikaans University, Johannesburg, South Africa, p. 92.

Simpson, E. L., and Eriksson, K.A., 2002, Tidally modulated channel deposits: 3.2 Ga Moodies Group, South Africa: International Association of Sedimentologists, 16th International Sedimentological Congress, Rand Afrikaans University, Johannesburg, South Africa, p. 329.

 

Simpson, E.L., and Dilliard, K.A., 2000, A sedimentologic perspective of the Neoproterozoic to early Cambrian clastics of the central Appalachians: rifting of Rodinia: Geological Society of America Abstracts with Programs, v. 32, no 1, A-74.

 

Simpson, E.L., and Walker, D., 1996, Tectonic implications of variations in the Chilhowee Group of the Southern Appalachians: Evidence for an upper to lower plate transition(?): Geological Society of America Abstracts with Programs,  v. 28., no. 2, p. 43 - 44.

 

Barnaby, R.J., and Simpson, E.L., 1987, Evolution of Early Cambrian passive margin, southwestern Virginia: Geological Society of America Abstracts with Programs, v. 19, p. 74.

 

Simpson, E.L., and Eriksson, K.A., 1986, Wave- and storm-dominated sedimentation in the Lower Cambrian Hampton and Erwin Formations of the Chilhowee Group in central and southern Virginia: American Association of Petroleum Geologists Bulletin, v. 70, p. 648.

Abstracts of Papers and Poster Sessions Presented Before Professional Societies

*Malenda, H. F., Simpson, E. L., Wizevich, M. C., Tindall, S. E., and Boling, K. S., 2010, Morphological variation and experimental compaction in the Colorado Plateau biological soil crusts: Implications for their possible recognition in the rock record [abs]: Geological Society of America - Denver Annual Meeting (31 October –3 November 2010), v. 42,

*Malenda, H. F., Simpson, E. L., Szajna, M. C., Fillmore, D. L., and Hartline, B.W., 2010, Strandline deposits of the Salton Sea, California: An integrated analogue for Triassic fish-part conglomerates of the Newark Basin [abs]: Geological Society of America - Denver Annual Meeting (31 October –3 November 2010)
, v. 42,

Lucas, S.G., Mansky, C., Fillmore, D.L., Simpson, E.L., 2010, Mississippian tetrapod footprint assemblages from Pennsylvania and Nova Scotia and the oldest amniotes: Geological Society of America Abstracts with Programs, v. 42.

 

Hilbert-Wolf, H.L., Simpson, E.L., Wizevich, M.C., Tindall, S.E. 2010. Identification of a tectonically controlled sequence boundary at the contact between the Upper Cretaceous Wahweap and Kaiparowits Formations: Geological Society of America Abstracts with Programs, v. 42.

 

Fillmore, D. L., Simpson, E. L., Szajna, M. J., Lucas, S. G., 2010, An example of Undichnia, the fish swimming trace from the Devonian Catskill Formation, Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 42, no. 1, p. 64.

 

Malenda, H.F., Simpson, E.L., Szajna, M.J., Fillmore, D.L., Hartline, B.W., 2010. Depositional setting of fish-part sandstones and conglomerates: A taphonomic approach to the interpretation of a rare lacustrine strandline deposit” Journal of Vertebrate Paleontology.

 

Simpson, W.S., Simpson, E.L., Hilbert-Wolf, H.L., Tindall, S.E., Wizevich, M.C., 2010, A preserved Late Cretaceous biological soil crust in the capping sandstone member, Wahweap Formation, Grand Staircase-Escalante National Monument: Paleoclimate implications, in, Noffke, N. and Chafetz, G., Eds., SEPM Field Conference – Microbial mats in siliciclastic deposits (Archean to Today), p. 47.

 

Smith, C.J., Fillmore, D. L., Simpson, E. L., Lucas, S. G., 2010. Depth and density of bioturbation in channel deposits of the Mississippain-age Mauch Chunk deposits: Geological Society of America Abstracts with Programs, v. 42, no. 1, p. 65.

 

Storm, L., Needle, M. D., Smith, C. J., Fillmore, D. L., Szajna, M., Simpson, E. L., Lucas, S.G., 2010, A Mississippian vertebrate burrow?: Geological Society of America Abstracts with Programs, v. 42, no. 1, p. 65.

 

Fillmore, D. L., Simpson, E. L., Szajna, M. J., Lucas, S. G., 2010, The fish swimming trace Undichnia from the Devonian Catskill Formation, Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 42, no. 1, p. 64.

 

Golder, K. B., Wizevich, M. C., Simpson, E. L., Storm, L. P., 2009. Oligocene ichnofossils in non-marine limestone of the Brian Head Formation, Utah: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 262.

 

Wizevich, M. C., Simpson, E. L., Hilbert-Wolf, H. L., Tindall, S. E., 2009, Syndepositional origin for internal laminations of spectacular seismogenic load structures in the Late Cretaceous Wahweap Formation, Grand Staircase-Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 121.

 

Hilbert-Wolf, H. L., Simpson, E. L., Wizevich, M. C., Tindall, S. E., 2009. Seismite Intensity Studies in the Wahweap Formation, southern Utah: Unraveling Syndepositional Fault Movements and the Differential Effects in the Hanging Wall and Footwall Blocks. Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 120-121.

 

*Smith, C. Moran, K. L., Fillmore, D. L., Simpson, E. L., Lucas, S.G., 2009, Taphonomic controls on the preservation of vertebrate tracks in ephemeral-braided river deposits of the middle and upper members of the Mississippian Mauch Formation, eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 119.

 

*Moran, K. L., Simpson, E. L., Hilbert-Wolf, H. L., Wizevich, M. C., Golder, K. B., Tindall, S. E., 2009, The recognition and implications of the wood-boring trace fossil Asthenopodichnium xylobiotum in Upper Cretaceous strata of Grand Staircase Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 262.

 

Fillmore, D. L., Lucas, S. G., Simpson, E. L., 2009, Invertebrate Trace Fossils in Semi-arid to Arid Braided-Ephemeral River Deposits of the Mississippian Middle Member of the Mauch Chunk Formation, Eastern Pennsylvania, USA: Geological Society of America Abstracts with Programs v. 41, no. 7, p. 261.

 

Fillmore, D. L., Lucas, S. G., Simpson, E. L., 2009, The fish swimming trace Undichnia from the Mississippian Mauch Chunk Formation, Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 263.

 

Hilbert-Wolf, H. L., Simpson, E. L., Tindall, S. E., Wizevich, M. C., Simpson, W. S., *Bernard, J., 2009, Recognition and Implications of Seismites in the Upper Cretaceous Wahweap Formation, Kaiparowits Basin, Utah: Grand Staircase-Escalante National Monument – Cretaceous Conference: Advances in Western Interior Late Cretaceous Paleontology and Geology Abstracts with Program, p. 24.

 

*Smith, C. J., Simpson, E. L., Fillmore, D., 2009, The first reported arthropod trackways from the Pennsylvanian Llewellyn Formation: Bear Valley Strip Mine, Shamokin, PA: Geological Society of America Abstracts with Programs, v. 41, no. 3, p. 88.

 

*Storm, L. P., Tindall, S. E., Simpson, E. L., Wizevich, M. C. 2008, Syntectonic sedimentation in the East Kaibab Monocline: Evidence for the timing of the onset of the Laramide deformation in south-central Utah: Geological Society of America Abstracts with Programs, v. 40, no. 1, p. 65.

 

Simpson, W. S., Simpson, E. L., Tindall, S. E., Wizevich, M. C., 2008, A preserved Late Cretaceous cryptobiotic soil in Grand Staircase-Escalante National Monument: Paleoclimate implications: Geological Society of America Abstracts with Programs, v. 40, no. 1, p. 40.

 

Wizevich, M. C., Simpson, E. L., Tindall, S. E., *Bernard, J., Wolf, H. L., Simpson, W. S., *Storm, L. P., and *Paese. S., 2008, Tectonic control on the alternating fluvial style in the Late Cretaceous upper member of the Wahweap Formation, Southern Utah: Geological Society of America Abstracts with Programs, v. 40, no. 1, p. 42.

 

Fillmore, D., Simpson, E. L., Lucas, S., 2008, Issac Lea’s original specimens of Palaeosaurpus (Sauropus) Primaevus, Geological Society of America Abstracts with Programs, v. 40, no. 2, p. 78.

 

Wolf, H. L., Simpson, E. L., *Storm, L. P., Tindall, S. E., Wizevich, M. C., Simpson, W. S., 2008, Implications of a sand volcano in the Late Cretaceous upper member of the Wahweap Formation: Geological Society of America Abstracts with Programs, v. 40, no. 1, p. 40.

 

Fillmore, D., Lucas, S., Simpson, E. L., 2007, Mississippian tetrapod footprints from the Mauch Chunk Formation of eastern Pennsylvania, USA, v. 27 Journal of Vertebrate Paleontology supplement to Number 3, p. 74A.

 

Lucas, S. G., Fillmore, D. L., and Simpson, E. L., 2007, Amphibian body impressions from the Mississippian Mauch Chunk Formation, Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 38, No 6., p. 400.

 

Wolf, H. L., Tindall, S. E., Simpson, E. L., Simpson, W. S., *Bernard, J., *Jenesky, T., 2007, Proximal seismites in the Upper Cretaceous upper and capping sandstone members of the Wahweap Formation in Grand Staircase-Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 6., p. 631.

 

Wolf, H. L., Simpson, W. S., Simpson, E. L., Tindall, S. E., 2007, Trends in Late Cretaceous seismites: upper and capping sandstone members, Wahweap Formation, Kaiparowits Basin, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 6, p. 310.

 

Eriksson, P.G., Bumby, A. J., Eriksson, K.A., Simpson, E. L., Catuneanu, O., Claassen, M., Mtimkulul, M. N., Brumer, J.J., van der Neut, M., 2007, Palaeohydrological data from the c. 2.0-1.8 Ga Waterberg Group, South Africa: a possibly unique Palaeoproterozoic fluvial style. Geoforum 2007.

 

*Tester, E., Simpson, E. L., Wolf, H. L., Simpson, W. S., Tindall, S. E., *Bernard, J. J., *Jenesky, T. A., 2007, Isolated vertebrate tracks from the upper Cretaceous capping sandstone member of the Wahweap Formation: Grand Staircase – Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 5., p. 42.

 

*Jenesky, T. A, Tindall, S. E., Simpson, E. L., 2007, Physical analog models of basement fault segmentation and monoclinal folding: Society of America Abstracts with Programs, v. 39, No. 5., p. 37.

 

Orsulak, M., Simpson, E. L., Wolf, H. L., Simpson, W. S., Tindall, S. E., *Bernard, J. J., *Jenesky, T. A., 2007, A lungfish burrow in Late Cretaceous upper capping sandstone member of the Wahwaep Formation Cockscomb area, Grand Staircase – Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 5., p. 43.

 

*Bernard, J. J., Simpson, E. L., Wolf, H. L., Simpson, W. S., Tindall, S. E., *Jenesky, T. A., 2007, Possible debris flows in the upper Cretaceous capping sandstone, Wahweap Formation, Grand Staircase – Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 5., p. 42.

 

Wolf, H. L., Simpson, E. L., *Bernard, J. J., Tindall, S. E., Simpson, W. S., *Jenesky, T. A., 2007, Sag Pond development at the upper and capping sandstone member contact, Upper Cretaceous Wahweap Formation, Grand Staircase – Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 39, No. 5.,  p. 12-13.

 

Fillmore, D. L., Simpson, E. L., and Lucas, S. G., 2006, An investigation of the Paleosauropus primarvus ichnofossil assemblage from the Mississippian Mauch Chunk Formation, Schuylkill County, Pennsylvania: Geological Society of America Abstracts with Programs, v. 38, No. 7, p. 436.

 

Simpson, E. L., Wolf. H., Simpson, W. S., Tindall, S. E. and *Jenesky, T., 2006, Eolian strata of the upper Cretaceous Capping Sandstone Member, Wahweap Formation, Cockscomb Area, Grand Staircase-Escalante National Monument, Utah: Grand Staircase-Escalante Research Symposium Cedar City, UT, p-3.

 

Wolf, H., Simpson, W. S, Simpson, E. L., Tindall, S. E., *Bernard., J. J., *Jenesky, T. A., *Orsulak, M., *Tester, E. W., 2006. Sleuthing epicenter direction from seismites: Cretaceous Wahweap Formation, Cockscomb Area, Grand Staircase-Escalante National Monument, Utah: Grand Staircase-Escalante Research Symposium Cedar City, UT, p-2

 

*Orsulak, M., *Tester, E., *Jenesky, T., *Bernard, J., Tindall, S. E., Simpson, E. L., Simpson, W. S., and Wolf, H., 2006, Effects of local faulting on sedimentation of the Late Cretaceous upper and capping sandstone members of the Wahweap Formation, Kaibab uplift, Utah: The 60th Annual Colleges Science Conference and The 17th Annual Saint Joseph’s University Sigma Xi Student Research Symposium, p. 127-128.

 

*Bernard, J., *Jenesky, T., *Tester, E., *Orsulak, M., Tindall, S. E., and Simpson, E. L. 2006, Timing of Late Cretaceous fault-fold interactions, East Kaibab monocline, Utah: Implications for the onset of Laramide deformation: The 60th Annual Colleges Science Conference and The 17th Annual Saint Joseph’s University Sigma Xi Student Research Symposium, p. 78.

 

*Bernard, J., *Jenesky, T., *Tester, E., *Orsulak, M., Tindall, S. E., and Simpson, E. L. 2006, Timing of Late Cretaceous fault-fold interactions, East Kaibab monocline, Utah: Implications for the onset of Laramide deformation: Geological Society of America Abstracts with Programs, v. 38, No. 6., p. 38.

 

*Orsulak, M., *Tester, E., *Jenesky, T., *Bernard, J., Tindall, S. E., Simpson, E. L., Simpson, W. S., and Wolf, H., 2006, Effects of local faulting on sedimentation of the Late Cretaceous upper and capping sandstone members of the Wahweap Formation, Kaibab uplift, Utah: Geological Society of America Abstracts with Programs, v. 38, No. 6., p. 33-34.

 

Wolf, H., Simpson, W. S, Simpson, E. L., Tindall, S. E., *Bernard., J. J., *Jenesky, T. A., *Orsilak, M., *Tester, E. W., 2006. Sleuthing epicenter direction from seismites: Cretaceous Wahweap Formation, Cockscomb Area, Grand Staircase-Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 38, No. 6., p. 6.

 

Simpson, E. L., Wolf. H., Simpson, W. S., Tindall, S. E. and *Jenesky, T., 2006, Eolian strata of the upper Cretaceoous Capping Sandstone Member, Wahweap Formation, Cockscomb Area, Grand Staircase-Escalante National Monument, Utah: Geological Society of America Abstracts with Programs, v. 38, no. 6., p. 6.

 

Fillmore, D. L., Simpson, E. L., and Lucas, S. G., 2006, Palaeosauropus primaevus: Dusting off old Mississippian footprtints: Geological Society of America Abstracts with Programs, v. 38, No 2, p. 65.

 

Lucas, S. G., Fillmore, D. L., and Simpson, E. L., 2006, Tetrapod footprint assemblage of the Mississippian Mauch Chunk Formation, Schuylkill County, Pennsylvania: Geological Society of America Abstracts with Programs, v. 38, No 2, p. 64.

 

Simpson, E. L., Lucas, S. G., and Fillmore, D. L., 2006, Depositional facies of the tetrapod footprint assemblage from the Mississippian Mauch Chunk Formation, Schuylkill County, Pennsylvania: Geological Society of America Abstracts with Programs, v. 38, No 2, p. 64-65.

 

*Jenesky, T. A., Tindall, S. E., *Scalise, R. L., Simpson, E. L., and Simpson, W. S., 2005, Seismogenic normal faulting during deposition of the Late Cretaceous Wahweap Formation, Kaiparowits Basin, Utah: Geological Society of America Abstracts with Programs, v. 37, No 6, p.

 

Simpson, W. S., *Rhoads, C. L., Simpson, E. L., Szajna, M.J., and Hartline, B. W., 2004, Depositional setting and taphonomy of fish-part conglomerates, Triassic Lockatong Formation, Collegeville, PA.: Geological Society of America Abstracts with Programs, v. 36. No. 5., p. 64.

 

Eriksson, K. A., and Simpson, E. L., 2004, Tidal facies in the Moodies Group, Barberton Greenstone Belt: Recognition and significance: In: Reimold, W. U., and Hofmann, A., (Comp.), Abstract Volume, Field Forum on Processes on the Early Earth, Kaapvaal Craton, 409 July, 2004, p. 29-31.

 

Simpson, E. L., and Eriksson, K. A., 2004, 3.2 Ga eolain deposits from the Moodies Group, Barberton Greenstone Belt, South Africa: Geoscience Africa 2004, Abstract Volume, University of Witwatersrand, Johannesburg, South Africa, p. 604.

 

Eriksson, K. A., Master, S., Henry, G., Simpson, E. L., 2004, Neoarchean (CA. 2.58 Ga) halite clasts in peritidal facies of the Black Reef-Chuniespoort transition Transvaal Supergroup, South Africa: Implications for palaeo-oceanic chemistry: Geoscience Africa 2004, Abstract Volume, University of Witwatersrand, Johannesburg, South Africa, p 195-196

 

Szajna, M. J., Hartline, B. W., and Simpson, E. L., 2004, Preliminary report on dinosaur tracks and associated fauna from the late Triassic Lockatong Formation near Collegeville, Pennsylvania: Geological Society of America Abstracts with Programs, v. 36, No. 2., p. 96.

 

*Nase, A. M., *Rhoads, C. L., Rosenberger, J. E., Szajna, M. J., Hartline, B. W., and Simpson, E. L., 2004, Depositional setting and taphonomy of phytosaur bearing beds, Triassic Lockatong Formation near Collegeville, PA: Geological Society of America Abstracts with Programs, v. 36, No. 2., p. 96.

 

*Fillmore, D. L., *Scalise, R. C., *Zellner, G. C., Simpson, E. L., 2004, Mississippian-age swimming tetrapod tackways from the Mauch Chunk Formation near Tamaqua, Pennsylvania: Geological Society of America Abstracts with Programs, v. 36, No. 2., p. 109.

 

Eriksson, K.A., Master, S. E., Henry, G., and Simpson, E.L., 2003, Neoarchean (c. 2.58) Halite casts in peritidal sediments of the Black Reef – Chuniespoort Group transition beds, Transvaal Supergroup (South Africa): Geological Society of America Abstracts with Programs, v. 35, No. 6., p. 600.

 

Noffke, N., Eriksson, K., Hazen, R., Nhleko, N., and Simpson, E. L., 2003, Microbially induced sedimentary structures – a new window in understanding early life: examples from Archean sandstones, South Africa: Geological Society of America Abstracts with Programs, v. 35, No. 6., p. 107.

 

Simpson, E. L., and Eriksson, K. A., 2003, 3.2 Ga eolian sand sheet deposits from the Moodies Group, Barberton Greenstone Belt, South Africa: Geological Society of America Abstracts with Programs, v. 35, No. 6., p. 505.

 

*Hopkins, R. F., Eriksson, K. A., and Simpson, E. L., 2000, Annual Cycles in Tidal Rhythmites: ~2.9 Ga Coronation Shale, West Rand Group, South Africa: Geological Society of America Abstracts with Programs, v. 32 No. 7, p. A- 307.

 

*Kuklis, C. A., Eriksson, K. A., and Simpson, E. L., 2000, Quantification of an Archean tidal record: Witwatersrand Supergroup, South Africa: Geological Society of America Abstracts with Programs, v. 32 No. 7, p. A- 307.

 

Eriksson, K. A., and Simpson, E. L., 2000, Archean Earth-Moon dynamics deduced from tidalites in the 3.2 Ga Moodies Group, Barberton Greenstone Belt, South Africa: Geological Society of America Abstracts with Programs, v. 32 No. 7, p. A- 307.

Simpson, E. L. and *Dilliard, K. A., 2000, A sedimentologic perspective of the Neoproterozic to Early Cambrian clastics of the Central Appalachians: rifting of Rodinia: Geological Society of America Abstracts with Programs, v. 32, No. 1, p A-74.

 

Eriksson, P.G., Simpson, E.L., Eriksson, K.A., Bumby, A.J., and Steyn, G.L., 1999, Roll-up structures in the 1.8 Ga Waterberg Group, South Africa: Evidence from Microbial mats in an intracratonic desert setting: Geological Society of America Abstracts with Programs, v. 30, No. 7, p. 463-464.

 

Simpson, E.L., *Kuklis, C.A., Eriksson, K.A., Eriksson, P.G., and Bumby, A.J., 1999, Interbedded eolian dune, interdune and playa deposits, ~1.8 Ga Makgabeng Formation, Waterberg Group, South Africa: Climatic implications: Geological Society of America Abstracts with Programs, v. 30, No. 7, p. 284-285.

 

Eriksson, K.A., Simpson, E.L., Miller, D.J., and Adkins, R.M., 1999, Hierarchical bundling of tidal rhythmites: Implications for sedimentation rates, paleoclimates and lunar orbital shapes: EUG meeting, Frasburg, France.

 

Simpson, E.L., Eriksson, K.A., Eriksson, P., and Bumby, A, 1999, Genesis of massive sandstone interbedded with eolianites: the 1.8 Ga Makgabeng Formation, South Africa: American Association of Petroleum Geologists Annual Convention Program, V. 8, p. A130.

 

*Higgins, D.J., *Dilliard, K.A., Simpson, E.L., and Rowell, B.F., 1998, Fluvial to marine transition within the Lower Cambrian Hardyston Formation, Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 30, No 7,  A 335.

 

Simpson. E.L, *Dilliard, K.A., and *Noto, R.C., 1997, Contrasting fluvial styles of the Catoctin and Weverton formations, central Virginia: Should hyperconcentrated flows be more common before the advent of land plants?:  Geological Society of America Abstracts with Programs, v. 29, A273.

 

*Dilliard, K.A., Simpson. E.L., and *Noto, R.C., 1997, Characterization of the preserved Neoproterozoic landsurface and associated Catoctin Formation fluvial deposits, Shenahdoah National Park, Virginia:, Geological Society of America Abstracts with Programs, v. 29, A273.

 

*Dilliard, K.A., Simpson. E.L., and *Noto, R.C., 1997, Characterization of fluvial systems within the Neoproterozic Catoctin Formation, Northern Virginia: Geological Society of America Abstracts with Programs, v. 29, p. 13.

 

*Dilliard, K.A., and Simpson, E.L.,1997, Computer simulation of superimposed trace fossils: analogs for Cambrian-age Skolithos distributions:  Geological Society of America Abstracts with Programs, v. 29, p. 41

 

Simpson, E.L., *Summers, S.A., and *Jarosynski, W.M., 1996, The effect of pure and simple shear deformation on clustered, random, and uniform trace fossil distributions: uncertainty in the nearest neighbor technique results: Geological Society of America Abstracts with Programs, v. 28, p. 297.

 

*Gledhill, H.M., *Noto, R.C., *Harrison, M.J., *Dilliard, K.A., and Simpson, E.L., 1996, Characterization of parasequences within the Neoproterozoic to Lower Cambrian upper Unicoi Formation, James River, Virginia: Geological Society of America Abstracts with Programs, v. 28, no. 2, p. 13.

 

Simpson, E.L., Bennington, J.B., *Harrison, M.J., *Gledhill, H.M., *Noto, R.C., and *Dilliard, K.A., 1995, Quadrat variance analysis of Lower Cambrian ichnofossil distribution across a sequence boundary, central Virginia: Geological Society of America Abstracts with Programs, v. 27. p. A365.

 

Simpson, E.L., Walker, D., *Noto, R.C., *Gledhill, H.M., and *Harrison, M.J., 1994, Process interpretation of tidal deposits within the Neoproterozic to Lower Cambrian Unicoi Formation, Central Blue Ridge Virginia: Geological Society of America Abstracts with Programs v. 26, no. 7, p A-493.

 

*Barlet, K.E., Venn, C., *Zimmerman, R., and Simpson, E.L., 1994, Migration and morphologic evolution of an ebb-tidal delta shoal, Chincoteague inlet, Virginia: Geological Society of America Abstracts with Programs v. 26, no. 4, p. 3.

 

*Harrison, M.J., *Venn, C., *Skoog, S.Y., *Gledhill, H.M., *Noto, R.C., and Simpson, E.L., 1994, Nearest neighbor analysis of Lower Cambrian Skolithos and Monocraterion ichnofossils: Implications for preservation and sequence boundary identification:  Geological Society of America Abstracts with Programs v. 26, no. 4, p. 18.

 

Eriksson, K.A., Simpson, E.L., Krogstad, E.J., McLennan, S.M., and Norman, M., 1994, Provenance characterization of the Appalachian clastic wedges from sandstone petrography and clast compositions: Geological Society of America Abstracts with Programs v. 26, no. 4, p. 12.

 

Krogstad, E.J., McLennan, S.M., Norman, M.D., Eriksson, K.A. and Simpson, E.L., 1994, Trace element and Nd-Pb isotope evolution of shales from the southern Appalachian orogenic belt: Geological Society of America Abstracts with Programs v. 26, no. 4, p. 23.

 

Simpson, E.L., Driese, S.G., and Eriksson, K.A., 1993, 1.8 GA Paleosols from the Lochness Formation, Mount Isa, Australia: Paleoclimatic Implications: Geological Society of America Abstracts with Programs v. 25, No. 6, p A-69.

 

Simpson, E.L., and Walker, D., 1993, Sedimentologic and Tectonic History of the Chilhowee Group: Tennessee and Virginia: Geological Society of America, v. 25, p. 70.

 

Simpson, E.L., Walker, D. and Driese, S.G., 1992, Provenance versus. Depositional Setting as influences on sandstone composition; examples from the Proterozoic to basal Cambrian of the southern Appalachians: Geological Society of America Abstracts with Programs, v. 24, p. 59.

 

Walker, D., Simpson, E. L., and Thomas, W.A., 1992, Along-strike variation in sedimentary basins of the southern Iapetean margin: A result of different plate configurations:  Geological Society of America Abstracts with Programs, v. 24, p. 71.

 

Simpson, E.L., Walker, D., and Kasselas, G., 1992, Sequence Stratigraphic Framework of the Chilhowee Group:  Formation of an incipient passive margin in Virginia and Tennessee:  Geological Society of America Abstracts with Programs, v. 24, p. 64.

 

Simpson, E.L., Venn, C., and *Skoog, S.Y., 1991, Statistical studies on the distribution of Diopatra cuprea across modern tidal flats: Implications for the autecology of the Cambrian Skolithos organism:  Geological Society of America Abstracts with programs, v. 23, p. A164

 

Loope, D.B., and Simpson, E.L., 1991, Significance of thin sets of eolian cross-strata: Geological Society of London/British Sedimentological Research Group, Aberdeen, Scotland.

 

Simpson, E.L., and Eriksson, K.A., 1991, Early Proterozoic eolianites within a fluvial and marine succession: Whitworth Formation, Mount Isa Orogen, Australia:  GAC/MAC Program with Abstracts, v. 16, p. A115.

 

Patterson, J.P. and Simpson, E.L., 1991, Paleoenvironmental constraints on the Chilhowee Group of the eastern Blue Ridge: Thoroughfare Gap, Virginia: Geological Society of America Abstracts with Programs, v. 22, p. 113.

 

Simpson, E.L., *Linski, D., *Mull, M.F., *Keiser, J.P., *Horsnall, S.L., and *Hendricks, J.S., 1991, Depositional processes in outer-shelf sediments of the Lower Cambrian Harpers Formation of the Chilhowee Group, south-central Pennsylvania: Geological Society of America Abstracts with Programs, v. 22, p. 127.

 

*Skoog, S., Venn, C., and Simpson, E.L., 1991, Three-dimensional distribution of Diopatra cuprea from a modern tidal flat: Implications for the distribution of Skolithos in lower Cambrian rocks of Virginia: Geological Society of America Abstracts with Programs, v. 22, p. 129.

 

Loope, D.B., and Simpson, E.L., 1990, New interpretation of Jurassic dune/interdune deposits, Utah: Geological Society of America Annual Abstracts with Programs, v. 21, p. 91.

 

Eriksson, K.A., Simpson, E.L., and Jackson, M.J., 1990, Stratigraphic evolution of a Proterozoic rift to thermal-relaxation basin, Mount Isa Inlier, Australia: Implications for lithospheric extension: Geological Society of America Abstracts with Programs, v. 21, p. 369.

 

Simpson, E.L., Eriksson, K.A., and Jackson, M.J., 1989, Sequence stratigraphy as a correlation tool for basin analysis in nonfossiliferous sedimentary basins: An early Proterozoic example from the Mount Isa Inlier, Australia, Geological Society of America abstracts with programs, v. 20, p. 485-486.

 

Eriksson, K.A., and Simpson, E.L., 1989, Controls on Development of cyclic siliciclastic tidal deposits in the Proterozoic Mount Isa Orogen, Australia: Second International Research Symposium in Clastic Tidal Deposits (modern and ancient), Program and Abstracts, The University of Calgary, Calgary, Canada, p. 30.

 

Simpson, E.L., and Eriksson, K.A., 1989, Ebb- and Flood-influenced, intertidal sedimentation within the Lower Cambrian Antietam Formation, Central Virginia: Second International Research Symposium on Clastic Tidal Deposits (modern and ancient), Program and Abstracts, The University of Calgary, Calgary, Canada, p. 87.

 

Simpson, E.L., and Eriksson, K.A., 1989, Tectonic controls on the Chilhowee Group, southwestern Virginia: Geological Society of America Abstracts with Programs, v. 21 p. 58-59.

 

Simpson, E.L., Jackson, M.J., and Eriksson, K.A., 1988, Sealevel controls on progradational and transgressive sequences in the 1.75 Ga lower Quilalar Formation, Mount Isa Orogen, Australia: Geological Society of America Abstracts with Programs, v. 20 p. 78.

 

Harris, C.W., Simpson, E.L., Read, J.F., and Eriksson, K. A. 1988, An allocyclic model for fine-scale subdivision of prograding siliciclastic shelf sequences: Society of Economic Paleontologists and Mineralogists Conference, Shelf sedimentation: Events and rhythms, University of California at Santa Cruz, v. 1, p. 22.

 

Simpson, E.L., and Eriksson, K.A., 1988, Distal Alluvial Fan to Outer Shelf Sedimentation within the Late Proterozoic to Early Cambrian Unicoi and Lower Hampton Formations, southern and central Virginia: Geological Society of America Abstracts with Programs, v. 20, p. 315.

 

Simpson, E.L., and Eriksson, K.A., 1987, Rift to incipient passive-margin sedimentation within the Late Proterozoic to Early Cambrian Unicoi and Lower Hampton Formations, southern and central Virginia: Geological Society of America Abstracts with Programs, v. 19, p. 846.

 

Simpson, E.L., and Eriksson, K.A., 1987, Construction and Destruction of progradational packages within the Early Cambrian Hampton and Erwin Formations: central and southern Virginia: Appalachian Basin Industrial Associates Program Spring Meeting, p. 6-7.

 

Simpson, E.L., Harris, C.W., Rowell, B., and Eriksson, K.A., 1986, Alluvial to tidal-shelf transition within the lower Hardyston Formation of eastern Pennsylvania: Society of Economic Paleontologists and Mineralogists, Abstracts Annual Midyear Meeting, v. 3, p. 103.

 

Simpson, E.L., and Eriksson, K. A., 1985, Paleoenvironmental constraints provided by paleowave reconstructions: Early Cambrian Chilhowee Group drift-stage sedimentation in the central Appalachians: Geological Society of America, Abstracts with Programs, v. 17, p. 718.

 

Simpson, E.L., and Loope, D.B., 1983, Preservability of dune and interdune sediments, White Sands, New Mexico: Geological Society of America, Abstracts with Programs, v. 15, p. 332.




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