Paper No. 218-12 GYROLITHES AS AN INDICATOR OF SHALLOW WATER DEPOSITION IN THE AUSTIN CHALK NEAR WACO, TEXAS, USA



Paper No. 218-12
Authors will be present from: 2:00 to 4:00 PM, and 5:00 to 6:30 PM

GYROLITHES AS AN INDICATOR OF SHALLOW WATER DEPOSITION IN THE AUSTIN CHALK NEAR WACO, TEXAS, USA


MORGAN, Ryan, Department of Chemistry, Geosciences, and Physics, Tarleton State University, Box T-0540, Stephenville, TX 76401, rmorgan@tarleton.edu
Gyrolithes, a helical marine trace fossil, is discovered to occur in beds of the Austin Chalk near Waco, McLennan County, Texas. Irregular bedding features associated with Gyrolithes at this locality indicate deposition during a storm-influenced turbidity episodes, which are interspersed with periods of quiescence allowing for firm ground formation and colonization by the trace maker. Gyrolithes is associated with marginal marine settings in other localities, but has not ever been associated with storm deposits; therefore, this discovery constitutes an expansion of environment for this ichnogenus.

Session No. 218--Booth# 221

Paleontology: Fossils as Paleoenvironmental and Paleoclimactic Indicators (Posters)
Tuesday, 21 October 2014: 9:00 AM-6:30 PM
Vancouver Convention Centre-West Exhibition Hall C
Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p.539
© Copyright 2014 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.
See more of: Paleontology: Fossils as Paleoenvironmental and Paleoclimactic Indicators (Posters)
See more of: Discipline Sessions
<< Previous Abstract | Next Abstract >>