SEQUENCE STRATIGRAPHIC ANALYSIS OF THE LOWER AND UPPER BRUSH CREEK INTERVAL (LATE PENNSYLVANIAN), SOUTHEASTERN OHIO

Title:	SEQUENCE STRATIGRAPHIC ANALYSIS OF THE LOWER AND UPPER BRUSH CREEK INTERVAL (LATE PENNSYLVANIAN), SOUTHEASTERN OHIO
Author:	Klasen, Rebecca Lynn
Description:	Twelve detailed sections were measured through the interval bracketing the Upper and Lower Brush Creek limestones (Glenshaw Formation, Conemaugh Group) in southeastern Ohio. The stratigraphic position of the limestones was verified using conodont biostratigraphy. The nine facies and five facies associations identified within this interval record depositional environments ranging from terrestrial to shallow marine carbonate shelf. The sediments can also be grouped into three systems tracts. The thick Transgressive Systems Tracts in the western portion of the study area is the result of excess accommodation resulting from valley incision. The presence of forced regression shoreface sandstones as part of the Falling Stage System Tract is consistent with earlier models of glacial-eustatic changes in relative sea level. The presence of only two sequences bracketing the Upper and Lower Brush Creek limestones suggests the amount of total accommodation provided by tectonic subsidence was relatively high compared to other intervals in the basin.
Permanent Link:	http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1167764282 http://hdl.handle.net/2374.OX/14098
Date:	2007

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