DOI: 10.1016/j.palaeo.2015.06.036
论文题名: Late Jurassic-Early Cretaceous hydrocarbon seep boulders from Novaya Zemlya and their faunas
作者: Hryniewicz K. ; Hagström J. ; Hammer T. ; Kaim A. ; Little C.T.S. ; Nakrem H.A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 436 起始页码: 231
结束页码: 244
语种: 英语
英文关键词: Boreal
; Cretaceous
; Hydrocarbon seeps
; Jurassic
; Molluscs
; Novaya Zemlya
英文摘要: The paper describes Late Jurassic-Early Cretaceous seep carbonate boulders from the Russian Arctic island of Novaya Zemlya, collected in 1875 by A.E. Nordenskiöld during his expedition to Siberia. The carbonates are significantly depleted in heavy carbon isotopes (δ13C values as low as ca. -40‰) and show textures typical for carbonates formed under the influence of hydrocarbons, such as fibrous carbonate cements and corrosion cavities. The rocks contain index fossils of Late Oxfordian-Early Kimmeridgian, Late Tithonian (Jurassic) and latest Berriasian-Early Valanginian (Cretaceous) age. The fossil fauna is species rich and dominated by molluscs, with subordinate brachiopods, echinoderms, foraminifera, serpulids and ostracods. Most of the species, including two chemosymbiotic bivalve species, likely belong to the 'background' fauna. Only a species of a hokkaidoconchid gastropod, and a possible abyssochrysoid gastropod, can be interpreted as restricted to the seep environment. Other seep faunas with similar taxonomic structure are suggestive of rather shallow water settings, but in case of Novaya Zemlya seep faunas such structure might result also from high northern latitude. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68844
Appears in Collections: 过去全球变化的重建
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作者单位: Natural History Museum, University of Oslo, 1172 Blindern, Oslo, Norway; Institute of Paleobiology, Polish Academy of Sciences, ul. Twarda 51/55, Warszawa, Poland; Department of Palaeobiology, Swedish Museum of Natural History, P.O. Box 50007, Stockholm, Sweden; School of Earth and Environment, University of Leeds, Leeds, United Kingdom
Recommended Citation:
Hryniewicz K.,Hagström J.,Hammer T.,et al. Late Jurassic-Early Cretaceous hydrocarbon seep boulders from Novaya Zemlya and their faunas[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,436