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2015 GSA Annual Meeting in Baltimore, Maryland, USA (1-4 November 2015)

Paper No. 338-8
Presentation Time: 3:30 PM

THE EDIACARAN-CAMBRIAN TRANSITION IN THE DEEP SPRING FORMATION AT MT. DUNFEE, NV, USA


SMITH, Emily F., Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138, NELSON, Lyle L., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02138, EYSTER, Athena E., Department of Earth and Planetary Sciences, Harvard University, 20 Oxford St, Cambridge, MA 02138 and MACDONALD, Francis A., Department of Earth and Planetary Sciences, Harvard University, 2, Cambridge, MA 02138, efsmith@fas.harvard.edu

Precise global correlation of integrated datasets that span the latest Ediacaran and earliest Cambrian is necessary to understand rates of and mechanisms for biological and environmental change across this critical transition. New, exceptionally preserved late Ediacaran to early Cambrian fossil horizons have been discovered in the Deep Spring Formation of Nevada and placed into a geologic, stratigraphic, and chemostratigraphic context, allowing for correlation with other late Ediacaran sections globally. Gaojiashania is preserved in siltstone and sandstone in between Cloudina-rich wackestones and packstones in the Dunfee (Lower) Member of the Deep Spring Formation. This fossil horizon is the first confirmed report of Gaojiashania outside of China, extending its biogeographic range and confirming its narrow biostratigraphic range in the latest Ediacaran.

Session No. 338

T152. Geobiology of Critical Transitions: Integrating Fossils, Proxies, and Models III
Wednesday, 4 November 2015: 1:30 PM-5:30 PM
Room 325/326 (Baltimore Convention Center)
Geological Society of America Abstracts with Programs. Vol. 47, No. 7, p.852
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