BYU

Abstract by Omar Ahmad

Personal Infomation


Presenter's Name

Omar Ahmad

Co-Presenters

None

Degree Level

Undergraduate

Co-Authors

Chris Perfili

Abstract Infomation


Department

Geological Sciences

Faculty Advisor

Scott Ritter

Title

Identifying Microbial Reefs in the Timpoweap Member, located in the Lower Triassic Moenkopi Formation of Hurricane Cliffs, Utah.

Abstract

The Timpoweap Member is comprised of a series of microbial patch reefs separated by stratified inter-reef strata. Nine domal reefs are exposed along the traverse with the reef cores comprised of microbial boundstone containing variable abundances of non-skeletal carbonate grains; chiefly ooids, oncoids and pisoids. Flanking and inter-reef beds are dominated by non-skeletal grains with lesser amounts of microbial material. The reefs represent an interplay between biological and vadose diagenetic processes that developed on a shallow subtidal shelf in the aftermath of the Permo-Triassic extinction. The final results will result in the first investigation and carbonate analysis on the Timpoweap Member. 

This research is an in-depth study of the area on top of the Hurricane Cliffs, evaluating thin sections of the 5 meter-thick Timpoweap Limestone. The evaluation process includes constructing a point count on the thin sections. This count will identify the carbonate material at each crosshair of a grid that has been over-laid on each section. To insure that the process of counting is cohesive and consistent an area of 9 squares on the grid are approximately 2 mm.