globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12175
Scopus记录号: 2-s2.0-85027950425
论文题名:
Lithostratigraphic analysis of a new stromatolite–thrombolite reef from across the rise of atmospheric oxygen in the Paleoproterozoic Turee Creek Group, Western Australia
作者: Barlow E.; Van Kranendonk M.J.; Yamaguchi K.E.; Ikehara M.; Lepland A.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2016
卷: 14, 期:4
起始页码: 317
结束页码: 343
语种: 英语
Scopus关键词: Archean ; carbonate ; chert ; facies ; geological record ; geomorphology ; lithostratigraphy ; microbialite ; oxygen isotope ; Proterozoic ; reef ; stromatolite ; syncline ; thrombolite ; Australia
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: This study describes a previously undocumented dolomitic stromatolite–thrombolite reef complex deposited within the upper part (Kazput Formation) of the c. 2.4–2.3 Ga Turee Creek Group, Western Australia, across the rise of atmospheric oxygen. Confused by some as representing a faulted slice of the younger c. 1.8 Ga Duck Creek Dolomite, this study describes the setting and lithostratigraphy of the 350-m-thick complex and shows how it differs from its near neighbour. The Kazput reef complex is preserved along 15 km of continuous exposure on the east limb of a faulted, north-west-plunging syncline and consists of 5 recognisable facies associations (A–E), which form two part regressions and one transgression. The oldest facies association (A) is characterised by thinly bedded dololutite–dolarenite, with local domical stromatolites. Association B consists of interbedded columnar and stratiform stromatolites deposited under relatively shallow-water conditions. Association C comprises tightly packed columnar and club-shaped stromatolites deposited under continuously deepening conditions. Clotted (thrombolite-like) microbialite, in units up to 40 m thick, dominates Association D, whereas Association E contains bedded dololutite and dolarenite, and some thinly bedded ironstone, shale and black chert units. Carbon and oxygen isotope stratigraphy reveals a narrow range in both δ13Ccarb values, from −0.22 to 0.97‰ (VPDB: average = 0.68‰), and δ18O values, from −14.8 to −10.3‰ (VPDB), within the range of elevated fluid temperatures, likely reflecting some isotopic exchange. The Kazput Formation stromatolite–thrombolite reef complex contains features of younger Paleoproterozoic carbonate reefs, yet is 300–500 Ma older than previously described Proterozoic examples worldwide. Significantly, the microbial fabrics are clearly distinct from Archean stromatolitic marine carbonate reefs by way of containing the first appearance of clotted microbialite and large columnar stromatolites with complex branching arrangements. Such structures denote a more complex morphological expression of growth than previously recorded in the geological record and may link to the rise of atmospheric oxygen. © 2016 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85101
Appears in Collections:影响、适应和脆弱性

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作者单位: Australian Centre for Astrobiology, University of New South Wales, Kensington, NSW, Australia; Australian Research Council Centre of Excellence for Core to Crust Fluid Systems, Perth, Australia; Department of Chemistry, Toho University, Tokyo, Japan; Centre for Advanced Marine Core Research, Kochi University, Nankoku, Japan; Geological Survey of Norway, Trondheim, Norway; Institute of Geology, Tallinn University of Technology, Tallinn, Estonia

Recommended Citation:
Barlow E.,Van Kranendonk M.J.,Yamaguchi K.E.,et al. Lithostratigraphic analysis of a new stromatolite–thrombolite reef from across the rise of atmospheric oxygen in the Paleoproterozoic Turee Creek Group, Western Australia[J]. Geobiology,2016-01-01,14(4)
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