DOI: 10.1016/j.palaeo.2013.02.027
论文题名: Global palaeobiogeography of brachiopod faunas during the early katian (late ordovician) greenhouse episode
作者: Sohrabi A. ; Jin J.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 389 起始页码: 78
结束页码: 86
语种: 英语
英文关键词: Brachiopod
; Early Katian (Trentonian)
; Faunal provincialism
; Late Ordovician
英文摘要: The early Katian (Late Ordovician) was marked by a major greenhouse episode and the early stage of a first-order marine transgression that led to the flooding of much of North America during the middle-late Katian. Multivariate analyses of 33 brachiopod faunas of early Katian (Trentonian, Chatfieldian, late Caradoc) age, including 252 rhynchonelliform genera, demonstrate that the "Trentonian brachiopod faunas" of Laurentia were already clearly differentiated into a Scoto-Appalachian fauna and an epicontinental fauna. Globally, four distinct faunal clusters are identified: Kazakhstan, Avalonia, epicontinental Laurentia, and Scoto-Appalachia. The Scoto-Appalachian fauna, which originated during the Sandbian, persisted into the early Katian and became most closely related to the brachiopod faunas along the western margins of Laurentia. The early Katian epicontinental faunas of Laurentia were more closely related to the coeval brachiopods of the Lithuanian-North Estonian confacies belts of Baltica than to the Scoto-Appalachian fauna. Palaeoecological control on the faunal endemism within Laurentia was attributable to isolation of Appalachian foreland basin by faulting and peripheral bulging during the early Taconic Orogeny, palaeolatitudinal faunal gradient from the subtropical Appalachia to mid-tropical epicontinental Laurentia, as well as different water depth, water temperature, and substrate types between the two palaeogeographical settings of Laurentia. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69599
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Science, Western University, London, ON, N6A 5B7, Canada
Recommended Citation:
Sohrabi A.,Jin J.. Global palaeobiogeography of brachiopod faunas during the early katian (late ordovician) greenhouse episode[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,389