气候变化领域集成服务门户(CCPortal): Late Ordovician climate and sea-level record in a mixed carbonate-siliciclastic-evaporite lithofacies; Williston Basin; USA

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DOI	10.1016/j.palaeo.2020.110054
	Late Ordovician climate and sea-level record in a mixed carbonate-siliciclastic-evaporite lithofacies; Williston Basin; USA
	Husinec A.; Harvey L.A.
发表日期	2021
ISSN	0031-0182
卷号	561
英文摘要	The Late Ordovician late Katian was a period of generally warm, transitional greenhouse to icehouse climate with sea-level oscillations dominated by moderate-amplitude eustasy. This study aims to improve the understanding of the climatic and sea-level fluctuations prior to the end-Ordovician glaciation, using a comprehensive core, wireline log, and thin-section dataset spanning the topmost Red River-Stony Mountain Formation within the subsurface of North Dakota, Williston Basin, North America. Eleven facies are identified, interpreted, and grouped into four facies associations, including salina to peritidal evaporative, restricted-marine subtidal, open-marine subtidal, and open-marine deeper water. Stratigraphic trends, basin-wide facies variations, and correlation of individual surfaces for ~380 km across the study area, suggest that the facies were deposited under different climatic and sea-level regimes as part of the long-term Stony Mountain sequence. The sequence (37–52 m) is bounded by anhydrites (basin center) and their correlative thin exposure-related breccias (updip proximal basin), and contains a set of high-frequency sequences (HFS; 2–26 m) that can be traced across the study area. The lowstand systems tract (LST) anhydrites formed in a shallow and well‑oxygenated setting under an arid climate during relatively short periods of the basin restriction. The sea-level rise during the early transgressive system tract (TST) resulted in a higher evapotranspiration rate and an increasingly humid climate that peaked during the late TST with the input of siliciclastics off the Transcontinental Arch. The increased precipitation and runoff resulted in quasiestuarine circulation. Return to semi-arid conditions characterizes the highstand systems tract (HST), with increasingly more restricted, shallow-marine and oxygenated setting with antiestuarine circulation. The work provides insight into the interaction of siliciclastic input, climate, and sea-level changes on depositional dynamics and sequence architecture of a mixed carbonate-siliciclastic-evaporite succession that formed in a tropical epicontinental basin setting prior to the end-Ordovician glaciation. © 2020 Elsevier B.V.
英文关键词	Carbonate facies; Epicontinental basin; Eustasy; Katian; Sequence stratigraphy; Transitional climate
语种	英语
scopus关键词	biostratigraphy; carbonate system; evaporite; highstand; historical record; lithofacies; lowstand; Ordovician; paleoclimate; sea level change; siliciclastic deposit; systems tract; North Dakota; Red River [United States]; United States; Williston Basin
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150258
作者单位	Department of Geology, St. Lawrence University, Canton, NY 13617, United States
推荐引用方式 GB/T 7714	Husinec A.,Harvey L.A.. Late Ordovician climate and sea-level record in a mixed carbonate-siliciclastic-evaporite lithofacies; Williston Basin; USA[J],2021,561.
APA	Husinec A.,&Harvey L.A..(2021).Late Ordovician climate and sea-level record in a mixed carbonate-siliciclastic-evaporite lithofacies; Williston Basin; USA.Palaeogeography, Palaeoclimatology, Palaeoecology,561.
MLA	Husinec A.,et al."Late Ordovician climate and sea-level record in a mixed carbonate-siliciclastic-evaporite lithofacies; Williston Basin; USA".Palaeogeography, Palaeoclimatology, Palaeoecology 561(2021).