42 General Paleontology (Posters)

Wednesday, 20 May 2015
1:30 PM - 5:30 PM
Grand Terrace

POSTERS OF THE MARKER BEDS AND SEDIMENTARY CYCLES OF THE OSAGEAN STRATOTYPE IN MISSOURI

Paper number: 42-1
Program: Technical Sessions
Time: 1:30 PM – 5:30 PM

Authors

Abstract

Posters of the stratigraphic units from Dolbee Creek to the Keokuk illustrate cyclic sedimentation of each unit. Each starts with grainstone caused by global warming, followed with slow sedimentation and glauconite, and ends with three cycles of coarse grained crinoidal limestone, with a silty parting capped by a disconformity. The three coarse warm cycles seperated by two silty cold cycles, and then we have a disconformity.

The conodont zones change with extinction during the hiatus, a new zone starts after the hiatus. The stratigraphic units are Dolbee Creek, Lower Haight Creek, Upper Haight Creek, Cedar Fork, and Keokuk.