SG41A:
The Neoproterozoic-Paleozoic Earth System: Records From an Earth in Transition

Submit an Abstract to this Session

Session ID#: 6370

Session Description:
Sedimentary rocks deposited across the Proterozoic-Phanerozoic transition record extreme climate fluctuations, a hypothesized rise in atmospheric oxygen or re-organization of the seafloor redox landscape, and the initial diversification of animals. While the Ediacaran-Cambrian boundary marks obvious state changes in a number of biotic and geochemical records, it is clear that such shifts occur against a background of longer-term trends. This session will welcome talks on any aspect of Neoproterozoic-Paleozoic Earth system science, and especially those that seek to compare and contrast various events (carbon isotope excursions, climatic shifts, anoxic episodes, seawater chemistry changes, biotic radiations and extinctions) between the two time periods. Talks focusing on the spectacular Canadian stratigraphic successions spanning these intervals are also especially welcome. Overall, this session will bring together researchers from numerous sub-fields to illuminate the interlinked geochemical, paleontological, sedimentological and tectonic changes during this fascinating time period in Earth history.
OSPA Liaison:  Erik A Sperling, Scripps Institution of Oceanography, Biological Oceanography, La Jolla, CA, United States; Harvard-Earth & Planet Science, Cambridge, MA, United States
Chairs:  Justin Vincent Strauss, Dartmouth College, Department of Earth Sciences, Hanover, United States
Primary Convener:  Erik A Sperling, Harvard Univ-Botanical Museum, Cambridge, MA, United States
Convener:  Justin Vincent Strauss, Dartmouth College, Department of Earth Sciences, Hanover, United States
Index Terms:

0410 Biodiversity [BIOGEOSCIENCES]
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0444 Evolutionary geobiology [BIOGEOSCIENCES]
Co-Sponsor(s):
  • B - Biogeosciences
  • ES - Earth Surface Processes
  • PP - Paleoceanography and Paleoclimatology
  • PG - Precambrian Geology

Abstracts Submitted to this Session:

SG41A-01
Behavior of Marine Sulfate in Variably Sulfidic Oceans (34879)
Linda C Kah, University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, Miles A Henderson, University of Tennessee, Knoxville, TN, United States and Cara K Thompson, Santa Monica College, Santa Monica, CA, United States
SG41A-02
Epiclastic Versus Pyroclastic: Revised Age Constraints on Cryogenian Glacial Deposits in the Pocatello Formation, Idaho, U.S.A. (35973)
Mark David Schmitz, Boise State University, Department of Geoscience, Boise, United States, Vincent Isakson, Boise State University, Boise, ID, United States, Carol M Dehler, Utah State University, Logan, UT, United States, Adolph Yonkee, Weber State University, Ogden, UT, United States and Francis A Macdonald, University of California Santa Barbara, Earth Science, Santa Barbara, United States
SG41A-03
Oxygen, Facies, and Secular Controls on the Appearance of Cryogenian and Ediacaran Body and Trace Fossils in the Mackenzie Mountains, Northwestern Canada (33518)
Erik A Sperling1,2, Calla Carbone3, Justin Vincent Strauss2, David T Johnston4, Guy Narbonne3 and Francis A Macdonald5, (1)Scripps Institution of Oceanography, Biological Oceanography, La Jolla, CA, United States, (2)Harvard-Earth & Planet Science, Cambridge, MA, United States, (3)Queens University, Geological Sciences and Geological Engineering, Kingston, ON, Canada, (4)Harvard University, Earth and Planetary Sciences, Cambridge, United States, (5)University of California Santa Barbara, Earth Science, Santa Barbara, United States
SG41A-04
Late-Ediacaran Resumption of Extension on the Western Laurentian Margin near Jasper, Alberta, Canada (36830)
Thomas James Maguire and Galen P Halverson, McGill University, Earth and Planetary Sciences, Montreal, QC, Canada
SG41A-05
Ediacaran soft-tissue preservation (34871)
Marc Laflamme, University of Toronto, Mississauga, 3359 Mississauga Road North, Mississauga, ON, Canada, James D. Schiffbauer, University of Missouri, Geological Sciences, Columbia, MO, United States and SImon Alastair Francis Darroch, Smithsonian Institution, Paleobiology, Washington, United States
SG41A-06
Biodiversity in the Precambrian Fossil Record: Constructing a Digital Database of the Ediacara Biota and Closing the Precambrian-Cambrian Evolutionary Gap. (34171)
Thomas Howard Boag, University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, Marc Laflamme, University of Toronto, Mississauga, 3359 Mississauga Road North, Mississauga, ON, Canada and SImon Alastair Francis Darroch, Smithsonian Institution, Paleobiology, Washington, United States
SG41A-07
New Precambrian Trace Fossils, the End of the Ediacara Biota, and First Mass Extinction of Complex Life (33441)
SImon Alastair Francis Darroch, Smithsonian Institution, Paleobiology, Washington, United States and Marc Laflamme, University of Toronto, Mississauga, 3359 Mississauga Road North, Mississauga, ON, Canada
See more of: Sedimentary Geology and Paleobiology