气候变化领域集成服务门户(CCPortal): Lithistid sponge-microbial reefs; Nevada; USA: Filling the late Cambrian ‘reef gap’

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DOI	10.1016/j.palaeo.2019.02.003
	Lithistid sponge-microbial reefs; Nevada; USA: Filling the late Cambrian ‘reef gap’
	Lee J.-H.; Dattilo B.F.; Mrozek S.; Miller J.F.; Riding R.
发表日期	2019
ISSN	0031-0182
起始页码	251
结束页码	262
卷号	520
英文摘要	Cambrian–Ordovician sponge-microbial mounds in the Great Basin of the western USA reveal reef structure and composition immediately prior to the Great Ordovician Biodiversification Event (GOBE). Here we describe lithistid sponge-microbial reefs from the upper Cambrian (Furongian, Stage 10) strata of the Arrow Canyon Range, Nevada. The reefs are mound-like structures up to 1 to 2 m high and a few meters wide that consist of an unidentified thin-walled, bowl-shaped anthaspidellid sponge, columnar microstromatolite fabric, and the calcified microbe Angusticellularia. The reefs formed in low-energy, subtidal environments in which lime mud filled spongocoels and inter-reef spaces around undisturbed, in place, thin-walled sponges. The reefs colonized stable substrates provided by oolitic and bioclastic grainstone shoals. The mutually attached lithistid sponges form the main framework of the reefs. These thin-walled and bowl-shaped lithistids most likely were adapted to low-energy environments. Spaces beneath the overhanging sponge walls were filled by microbial carbonates. These include pendent micro-dendritic Angusticellularia attached to dermal sponge surfaces and upward-growing masses of microstromatolites. After death the lithistid spongocoels were mainly filled by micritic sediment that hosted soft-bodied burrowing organisms and keratose-like sponges. These lithistid sponge-microbial reefs, together with an earlier example of late Cambrian (Paibian) dendrolite-lithistid reefs in the same area, characterize skeletal-microbial reefs immediately prior to the GOBE. © 2019 Elsevier B.V.
英文关键词	Arrow Canyon Range; GOBE; Great Basin; Skeletal-microbial reefs
语种	英语
scopus关键词	burrowing organism; Cambrian; grainstone; marine environment; morphology; Ordovician; reef; sponge; Arrow Canyon Range; Great Basin; Nevada; United States; Lithistida
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/151016
作者单位	Department of Geological Sciences, Chungnam National University, Daejeon, 34134, South Korea; Department of Biology, Purdue University, Fort Wayne, IN 46805, United States; Economic Geology Research Centre (EGRU), Department of Geoscience, James Cook University, Townsville, Queensland, Australia; Department of Geography, Geology, and Planning, Missouri State University, Springfield, MO 65897, United States; Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, United States
推荐引用方式 GB/T 7714	Lee J.-H.,Dattilo B.F.,Mrozek S.,等. Lithistid sponge-microbial reefs; Nevada; USA: Filling the late Cambrian ‘reef gap’[J],2019,520.
APA	Lee J.-H.,Dattilo B.F.,Mrozek S.,Miller J.F.,&Riding R..(2019).Lithistid sponge-microbial reefs; Nevada; USA: Filling the late Cambrian ‘reef gap’.Palaeogeography, Palaeoclimatology, Palaeoecology,520.
MLA	Lee J.-H.,et al."Lithistid sponge-microbial reefs; Nevada; USA: Filling the late Cambrian ‘reef gap’".Palaeogeography, Palaeoclimatology, Palaeoecology 520(2019).