干旱区生态环境知识资源中心(Arid): Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, Ventersdorp Supergroup, South Africa: Implications for oxygen oases

Arid

DOI	10.1016/j.precamres.2018.11.009
	Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, Ventersdorp Supergroup, South Africa: Implications for oxygen oases
	Wilmeth, D. T.1,2; Corsetti, F. A.2; Beukes, N. J.3; Awramik, S. M.4; Petryshyn, V 5; Spear, J. R.6; Celestian, A. J.2,7
通讯作者	Wilmeth, D. T.
来源期刊	PRECAMBRIAN RESEARCH
ISSN	0301-9268
EISSN	1872-7433
出版年	2019
卷号	320 页码:291-302
英文摘要	The Hartbeesfontein Basin contains the most extensive deposits of Archean lacustrine stromatolites on the Kaapvaal Craton, with stromatolitic fades occurring over similar to 100 km(2) in beds up to 7 m thick. Stromatolitic dolostones and cherts both preserve evidence of microbial processes. Dolomitic stromatolites have grumelous microspar textures between organic-rich laminae, suggestive of carbonate precipitation within microbial mats. Stromatolitic laminae within chert preserve detrital material beyond the angle of repose, indicating the trapping and binding of grains by microbial mats. Stromatolitic cherts also preserve fenestral textures and filamentous microfossils. Many fenestrae have rounded shapes surrounded by filamentous laminae and appear to have formed in situ within stromatolite fabrics before lithification. Fenestrae within stromatolitic chert resemble hourglass-associated fenestrae noted from recent silica stromatolites from Yellowstone National Park, and are interpreted to originate from gas bubbles forming within stromatolite-building mats. The preservation of delicate structures in Hartbeesfontein stromatolitic chert (e.g., filamentous microfossils and gas-related fenestrae) implies rapid lithification of microbial mats, while the mm to cm scale of fenestrae indicate equally rapid rates of microbial gas production. Textural and mineralogical evidence associated with gas-related fenestrae support the presence of oxygenic photosynthesis, which in turn strengthens previous hypotheses on Archean lakes as potential oxygen oases before the Great Oxidation Event.
英文关键词	Stromatolites Ventersdorp Supergroup Lacustrine Fenestrae Oxygen oasis
类型	Article
语种	英语
国家	France ; USA ; South Africa
收录类别	SCI-E
WOS记录号	WOS:000456899600017
WOS关键词	BARBERTON GREENSTONE-BELT ; MICROBIAL MATS ; SEDIMENTARY STRUCTURES ; KAAPVAAL CRATON ; FORTESCUE GROUP ; ORGANIC-MATTER ; EARLY-LIFE ; PHOTOSYNTHESIS ; ROCKS ; GEOCHEMISTRY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218160
作者单位	1.Univ Paris Diderot, Sorbonne Paris Cite, Equipe Geomicrobiol, Inst Phys Globe Paris, Paris, France; 2.Univ Southern Calif, Dept Earth Sci, Los Angeles, CA 90089 USA; 3.Univ Johannesburg, Dept Geol, DST NRF CIMERA, POB 524, ZA-2006 Johannesburg, South Africa; 4.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA; 5.Univ Southern Calif, Environm Studies Program, Los Angeles, CA 90089 USA; 6.Colorado Sch Mines, Dept Civil & Environm Engn, Golden, CO 80401 USA; 7.Nat Hist Museum Los Angeles, Los Angeles, CA 90007 USA
推荐引用方式 GB/T 7714	Wilmeth, D. T.,Corsetti, F. A.,Beukes, N. J.,et al. Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, Ventersdorp Supergroup, South Africa: Implications for oxygen oases[J],2019,320:291-302.
APA	Wilmeth, D. T..,Corsetti, F. A..,Beukes, N. J..,Awramik, S. M..,Petryshyn, V.,...&Celestian, A. J..(2019).Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, Ventersdorp Supergroup, South Africa: Implications for oxygen oases.PRECAMBRIAN RESEARCH,320,291-302.
MLA	Wilmeth, D. T.,et al."Neoarchean (2.7 Ga) lacustrine stromatolite deposits in the Hartbeesfontein Basin, Ventersdorp Supergroup, South Africa: Implications for oxygen oases".PRECAMBRIAN RESEARCH 320(2019):291-302.