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

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

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

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.

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.

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., 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.

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.

Loope, D. B., and Simpson, E. L., 1993, Reply - Significance of thin sets of eolian cross-strata: Journal of Sedimentary Petrology, v. 63, p. 39-62.

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

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

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: Journal of Sedimentary Research, A65, p. 675-689.

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

Dilliard, K. A. Simpson, E. L., Noto, R. C., 1999, A Neoproterozoic Paleosurface and Associated Colluvial and Fluvial Deposits, Shenandoah National Park, VirginiaSoutheastern Geology, v. 38.p. v. 38, p. 239-257.

Dilliard, K. A., Simpson, E. L., Noto, R. C., Wizevich, M., 1999, Tectonic Implications of Fluvial Deposits Interbedded with Flood Basalts, Neoproterozoic Catoctin Formation, central Appalachians, U.S.A., Precambrian Research, v. 97, p. 115-134.

P.G. Eriksson, 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.

K.A. Eriksson, and Simpson, E.L,. 2000, Quantifying the oldest tidal record: The 3.2 Ga Moodies Group, Baberton Greenstone Belt, South Africa: geology

Simpson, E.L., Eriksson, K.A., Eriksson, P., and Bumby, A.J., Destruction of eolian dunes and the generation of massive sandstones, Paleoproterzoic Makgabeng Formtion, Waterberg Supergroup, South Africa: submitted Journal of Sedimentary Research.

Simpson, E. L., Dilliard, K.A., Rowell, B.F. Higgins. D., The Fluvial-to-Marine Transition within the Post-rift Lower Cambrian Hardyston Formation, Eastern Pennsylvania, USA, submitted to Sedimentary Geology.

E. L. Simpson, Kuklis, C.A.*, Eriksson, K. A., Eriksson, P. G., Bumby, A. J., and van Jaarsveld, C. F. Description and Interpretation of 1.8 Ga Playa deposits: Makgabeng Formation, Waterberg Group, South Africa, Submitted to Journal of African Earth Sciences

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.

Simpson, E. L., and Eriksson, K. A., 1991, Depostitional 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. p. 371-387.

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

Eriksson, K. A., and 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 Sedimentolgists Special Publication No. 20, p. 203-221.

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.

Rankin, D., Miller, J., and Simpson, E. L., 1994, The Geology of the Mount Rogers Area, southwestern Virgina Blue Ridge and Unaka Belt, In Schultz, A., and Henika, B., eds., Field Giudes 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.

Skoog, S., Venn, C., and Simpson, E. L., 1991, Three-dimensional distribution of Diopatra cuprea from 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.

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.

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

Harrison, M. J., Venn, C., Skoog, S. Y., Gledhill, H., 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.

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

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

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.

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., 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.

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.

Dilliard, K. A., and Simpson, E. L., 1997, Characterization of fluvial systems within the Neoproterozoic Catcotin Formation of Central Virginia: Geological Society of America Abstracts with Programs, v. 29. p. 13.

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.

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.

Higgins, D. J., Simpson. E. L., Dilliard, K. A., and Rowell, B. F.,1998, Fluvial to Marine Transition within the Lower Hardyston Formation of Eastern Pennsylvania: Geological Society of America Abstracts with Programs, v. 30, A335.

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