Geochemistry and geochronology of the Neoproterozoic Pan-African Transcaucasian Massif (Republic of Georgia) and implications for island arc evolution of the late Precambrian Arabian–Nubian Shield
作者: Guram S. ZakariadzeYildirim DilekS.A. AdamiaR.E. OberhänsliS.F. KarpenkoB.A. BazylevN. Solov'eva
作者单位: 1Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow 119991, Russia
2Department of Geology, Miami University, Oxford OH 45, USA
3Dzhavakhishvili Tbilisi State University, pr. Chavchavadze 1, Tbilisi, 380028 Georgia
4Institut fur Geowissenschaften, Universitat Potsdam, Potsdam, D-14415 Germany
刊名: Gondwana Research, 2006, Vol.11 (1), pp.92-108
来源数据库: Elsevier Journal
DOI: 10.1016/j.gr.2006.05.012
关键词: Transcaucasian massifNeoproterozoic ophiolitesArabian–Nubian ShieldPan-African crustPrecambrian island arc evolutionPaleo-TethysPaleozoic Eurasia
原始语种摘要: Abstract(#br)The Transcaucasian Massif (TCM) in the Republic of Georgia includes Neoproterozoic–Early Cambrian ophiolites and magmatic arc assemblages that are reminiscent of the coeval island arc terranes in the Arabian–Nubian Shield (ANS) and provides essential evidence for Pan-African crustal evolution in Western Gondwana. The metabasite–plagiogneiss–migmatite association in the Oldest Basement Unit (OBU) of TCM represents a Neoproterozoic oceanic lithosphere intruded by gabbro–diorite–quartz diorite plutons of the Gray Granite Basement Complex (GGBC) that constitute the plutonic foundation of an island arc terrane. The Tectonic Mélange Zone (TMZ) within the Middle-Late Carboniferous Microcline Granite Basement Complex includes thrust sheets composed of various lithologies derived from...
全文获取路径: Elsevier  (合作)
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影响因子:7.396 (2012)

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