气候变化领域集成服务门户(CCPortal): Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada

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DOI	10.1130/B31858.1
	Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada
	Davies M.A.; Schröder-Adams C.J.; Herrle J.O.; Hülse P.; Schneider S.; Quesnel A.; Harwood D.M.
发表日期	2018
ISSN	167606
起始页码	1540
结束页码	1561
卷号	130 期号:2021-09-10
英文摘要	Considerable Late Cretaceous research has focused on Cenomanian to Turonian organic carbon-rich deposits associated with oceanic anoxic event (OAE) 2. Less is known about changing paleoceanographic conditions after this event, especially in the Arctic region. The Upper Cretaceous Kanguk Formation, composed of organic-rich shale and mudstone deposited in the Sverdrup Basin of the Canadian Arctic Archipelago, was investigated at two localities on Ellesmere Island, Canada. This study provides an Upper Cretaceous stratigraphic framework for the Arctic region by integrating chemostratigraphic, lithologic, and benthic foraminiferal biostratigraphic data. The potential influence of global transgressive- regressive cycles and positive carbon isotope excursions in the Turonian to lower Campanian were recognized in the Kanguk Formation at both sites by utilizing carbon isotope stratigraphy-based correlation to carbon isotope reference records. The presence and absence of OAE 2 at the Kanguk Formation base in distal and proximal settings, respectively, demonstrate the diachroneity of the lithological boundary between the Kanguk Formation and the underlying Hassel Formation. Two foraminiferal biostratigraphic zones are proposed and correlate to assemblages across the Arctic region: the Turonian to late Santonian Evolutinella boundaryensis zone and the late Santonian to Campanian Verneuilinoides bearpawensis-Glaphyrammina spirocompressa zone. The biostratigraphic zonal ages are constrained by correlations to chemostratigraphic data. This research refines the stratigraphic framework for the Upper Cretaceous of Arctic Canada, improves our understanding of the paleoenvironmental dynamics of the Late Cretaceous Polar Sea in relation to global transgressive-regressive cycles and OAEs, and can be utilized to understand relative timing and gaps in the sedimentary record. © 2018 Geological Society of America.
语种	英语
来源期刊	Bulletin of the Geological Society of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185092
作者单位	Department of Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada; Institute of Geosciences, Goethe-University Frankfurt, Biodiversity and Climate Research Centre (BIK-F), Altenhoeferallee 1, Frankfurt am Main, D-60438, Germany; CASP, West Building, 181A Huntingdon Road, Cambridge, CB3 0DH, United Kingdom; Department of Geosciences, University of Nebraska-Lincoln, 214 Bessey Hall, Lincoln, NE 68588-0340, United States; Department of Earth Sciences, University of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada
推荐引用方式 GB/T 7714	Davies M.A.,Schröder-Adams C.J.,Herrle J.O.,et al. Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada[J],2018,130(2021-09-10).
APA	Davies M.A..,Schröder-Adams C.J..,Herrle J.O..,Hülse P..,Schneider S..,...&Harwood D.M..(2018).Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada.Bulletin of the Geological Society of America,130(2021-09-10).
MLA	Davies M.A.,et al."Integrated biostratigraphy and carbon isotope stratigraphy for the Upper Cretaceous Kanguk Formation of the High Arctic Sverdrup Basin, Canada".Bulletin of the Geological Society of America 130.2021-09-10(2018).