干旱区生态环境知识资源中心(Arid): Assessing the impact of aquifer-eustasy on short-term Cretaceous sea-level

Arid

DOI	10.1016/j.cretres.2020.104445
	Assessing the impact of aquifer-eustasy on short-term Cretaceous sea-level
	Davies, Andrew; Greselle, Benjamin; Hunter, Stephen J.; Baines, Graham; Robson, Chris; Haywood, Alan M.; Ray, David C.; Simmons, Michael D.; van Buchem, Frans S. P.
通讯作者	Davies, A
来源期刊	CRETACEOUS RESEARCH
ISSN	0195-6671
EISSN	1095-998X
出版年	2020
卷号	112
英文摘要	The origin of moderate magnitude (tens of metres), short-term Cretaceous eustatic cycles remains enigmatic. The historical view of ubiquitous Cretaceous warmth casts doubt on the presence of significant terrestrial ice caps and the role of glacio-eustasy. As such, aquifer-eustasy is increasingly advocated as the primary driver of Cretaceous short-term sea-level change. Here, we analyse the role of aquifereustasy in driving Cretaceous short-term cycles by assessing the spatio-temporal pattern of aridity and humidity under differing CO2 forcing in new climate simulations for the Valanginian, Turonian, and Maastrichtian. Elevated CO2 forcing acts to increase the spatial extent of fully arid land areas, while resulting in only a marginal expansion of fully humid zones. Consequently, the greatest aquifer charge is more likely during lower CO2/cooler intervals, indicating that aquifer-eustasy works in phase with both glacio- and thermo-eustasy in contrast to the current aquifer-eustasy paradigm. Modern data indicate that climate is a primary control on water table depth. Using this constraint, the hydrological response in our Cretaceous simulations to large changes in atmospheric CO2 are insufficient to generate reported eustatic magnitudes. Our most likely aquifer-eustasy estimates are decimetre scale. Even using optimistic values for the impact of lakes and assuming the water table depth was reduced from the modern average to 0 m globally, the total aquifer-eustasy response remains smaller than 5 m. Our results indicate that glacio-eustasy was the most likely driver of Cretaceous short-term cycles, consistent with a growing body of evidence that challenges the ubiquitously warm Cretaceous notion. (C) 2020 Elsevier Ltd. All rights reserved.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000540353700014
WOS关键词	SEQUENCE STRATIGRAPHY ; CLIMATE-CHANGE ; EARLY EOCENE ; CARBON ; ICE ; RECORD ; BASIN ; CO2 ; FLUCTUATIONS ; WORLD
WOS类目	Geology ; Paleontology
WOS研究方向	Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324757
作者单位	[Davies, Andrew; Greselle, Benjamin; Baines, Graham; Robson, Chris; Ray, David C.; Simmons, Michael D.; van Buchem, Frans S. P.] Halliburton, 97 Jubilee Ave,Milton Pk, Abingdon, Oxon, England; [Hunter, Stephen J.; Haywood, Alan M.] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
推荐引用方式 GB/T 7714	Davies, Andrew,Greselle, Benjamin,Hunter, Stephen J.,et al. Assessing the impact of aquifer-eustasy on short-term Cretaceous sea-level[J],2020,112.
APA	Davies, Andrew.,Greselle, Benjamin.,Hunter, Stephen J..,Baines, Graham.,Robson, Chris.,...&van Buchem, Frans S. P..(2020).Assessing the impact of aquifer-eustasy on short-term Cretaceous sea-level.CRETACEOUS RESEARCH,112.
MLA	Davies, Andrew,et al."Assessing the impact of aquifer-eustasy on short-term Cretaceous sea-level".CRETACEOUS RESEARCH 112(2020).