干旱区生态环境知识资源中心(Arid): Are ancient seep environments distinguishable by benthic foraminiferal assemblages? A case study of the Cretaceous Western Interior Seaway

Arid

DOI	10.1016/j.cretres.2023.105476
	Are ancient seep environments distinguishable by benthic foraminiferal assemblages? A case study of the Cretaceous Western Interior Seaway
	Bryant, Raquel; Meehan, Kimberly C.; Belanger, Christina L.
通讯作者	Bryant, R
来源期刊	CRETACEOUS RESEARCH
ISSN	0195-6671
EISSN	1095-998X
出版年	2023
卷号	146
英文摘要	Methane cold seeps are food-rich seafloor habitats that served as oases for macrofaunal communities in the Cretaceous Western Interior Seaway (WIS). Although seep-obligate taxa occur at modern seeps, macrofaunal inhabitants were not endemic to seep environments in the WIS. Here we investigate benthic foraminiferal assemblages across the WIS and test whether benthic foraminifera from seeps are distinct from non-seep environments. We compile abundance data from Campanian to Maastrichtian seep, nearshore, and offshore environments and use constrained multivariate ordination to center our analysis on differences in assemblage composition as it relates to environment setting. Genus-level analysis re-veals that offshore settings have more calcareous taxa than nearshore settings, which, in contrast, have representation from various agglutinated genera. Analyses of guilds and morphotypes disregard test-wall type and still find compositional differences among environments that indicate a nearshoreeoffshore gradient in organic carbon supply. We also find that seep assemblages are generally more similar to offshore assemblages than nearshore ones, reflecting their position near the central axis of the WIS. However, there are no genera, guilds, or morphotypes unique to seeps. We further compare between assemblages from immature, predominantly soft-ground seeps and mature, predominantly hard-ground seeps. We find compositional differences consistent with abated chemical stressors and a well-developed physical substrate associated with seep maturity. Thus, although seep environments draw their benthic foraminiferal faunas from the surrounding metacommunity, assemblages reflect the environmental differences present at seeps and could be used as an additional proxy for seep settings and seep maturity in the WIS.(c) 2023 Elsevier Ltd. All rights reserved.
英文关键词	Cold seeps Benthic foraminifera Ordination Paleoecology Paleoenvironment
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000991957200001
WOS关键词	COLD METHANE SEEPS ; HYDROCARBON-SEEP ; TEPEE BUTTES ; PIERRE SHALE ; ISOTOPIC COMPOSITION ; BOUNDARY STRATOTYPE ; AMMONITE HABITATS ; USA IMPLICATIONS ; SERGIPE BASIN ; COLORADO
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/2XILL650/395827
推荐引用方式 GB/T 7714	Bryant, Raquel,Meehan, Kimberly C.,Belanger, Christina L.. Are ancient seep environments distinguishable by benthic foraminiferal assemblages? A case study of the Cretaceous Western Interior Seaway[J],2023,146.
APA	Bryant, Raquel,Meehan, Kimberly C.,&Belanger, Christina L..(2023).Are ancient seep environments distinguishable by benthic foraminiferal assemblages? A case study of the Cretaceous Western Interior Seaway.CRETACEOUS RESEARCH,146.
MLA	Bryant, Raquel,et al."Are ancient seep environments distinguishable by benthic foraminiferal assemblages? A case study of the Cretaceous Western Interior Seaway".CRETACEOUS RESEARCH 146(2023).