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An inferred sea level curve from car...

Bigolski, John N.

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An inferred sea level curve from carbonate depositional facies of the Middle Cambrian Elbrook Formation, western Maryland, U.S.A.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	An inferred sea level curve from carbonate depositional facies of the Middle Cambrian Elbrook Formation, western Maryland, U.S.A./
作者:	Bigolski, John N.
面頁冊數:	72 p.
附註:	Source: Masters Abstracts International, Volume: 48-01, page: 0328.
Contained By:	Masters Abstracts International48-01.
標題:	Geology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1469223
ISBN:	9781109349009

An inferred sea level curve from carbonate depositional facies of the Middle Cambrian Elbrook Formation, western Maryland, U.S.A.
Bigolski, John N.

An inferred sea level curve from carbonate depositional facies of the Middle Cambrian Elbrook Formation, western Maryland, U.S.A. - 72 p.

Source: Masters Abstracts International, Volume: 48-01, page: 0328.

Thesis (M.S.)--State University of New York at Binghamton, 2009.

Approximately 500 m of the Upper Member of the Elbrook Formation exposed along the Chesapeake and Ohio Canal in western Maryland can be divided into four depositional subfacies each up to a few meters thick. The four subfacies comprise thin-bedded dolomitic mudstones peloidal/oolitic grainstones ribbon-laminated limestone/dolomite interbeds, and microbially influenced thrombolites and stromatolites. Elbrook Formation subfacies are, in turn, organized into cyclic and non-cyclic facies. Approximately the lower third of the measured section comprises cyclic repetitions of most of the rock types organized into shallowing-upwards successions up to 10 m thick. The depositional environments: subtidal sand shoals associated with algal patch reefs; subtidal to intertidal mixed sand-mud flats; and intertidal mudflats associated with algal patch reefs. Upsection, the cyclic facies is replaced by a non-cyclic facies dominated by microbial bioherms up to tens of meters in thickness. These were apparently deposited over a completely subtidal shelf that rarely aggraded to sea level. A sea level curve developed for this portion of the Elbrook Formation does not match curves developed for the same time interval (Spencer & Demicco, 2002) from other portions of North America.

ISBN: 9781109349009Subjects--Topical Terms:

516570
Geology.

An inferred sea level curve from carbonate depositional facies of the Middle Cambrian Elbrook Formation, western Maryland, U.S.A.
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520 $a Approximately 500 m of the Upper Member of the Elbrook Formation exposed along the Chesapeake and Ohio Canal in western Maryland can be divided into four depositional subfacies each up to a few meters thick. The four subfacies comprise thin-bedded dolomitic mudstones peloidal/oolitic grainstones ribbon-laminated limestone/dolomite interbeds, and microbially influenced thrombolites and stromatolites. Elbrook Formation subfacies are, in turn, organized into cyclic and non-cyclic facies. Approximately the lower third of the measured section comprises cyclic repetitions of most of the rock types organized into shallowing-upwards successions up to 10 m thick. The depositional environments: subtidal sand shoals associated with algal patch reefs; subtidal to intertidal mixed sand-mud flats; and intertidal mudflats associated with algal patch reefs. Upsection, the cyclic facies is replaced by a non-cyclic facies dominated by microbial bioherms up to tens of meters in thickness. These were apparently deposited over a completely subtidal shelf that rarely aggraded to sea level. A sea level curve developed for this portion of the Elbrook Formation does not match curves developed for the same time interval (Spencer & Demicco, 2002) from other portions of North America.
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