ملخص
The Proto-Tethys Ocean between the North and South Kunlun began to form during the Sinian. Remnants of this ocean are preserved at the Oytag-Kudi suture. The presence of Paleozoic arc batholiths in the northern South Kunlun and their absence in the North Kunlun indicates southward subduction of the Proto-Tethys Ocean beneath the South Kunlun. Opposite subduction polarity can be demonstrated for the Late Paleozoic to mid-Mesozoic when the southerly located Paleo-Tethys Ocean was consumed beneath the South Kunlun and generated a Late Carboniferous to mid-Jurassic magmatic arc in the southern South Kunlun. Arc magmatism affected the southern South Kunlun and the large Kara-Kunlun accretionary prism (a suture sensu lato) which formed as a result of Paleo-Tethys' consumption. The dextral shear sense of ductile faults which are located at the margins of the arc batholiths, and which parallel the South Kunlun/Kara-Kunlun boundary, suggests oblique plate convergence with a dextral component. Different lines of evidence encourage us to interpret the Proto-Tethys ophiolites of the Oytag-Kudi zone as at least partly derived from an oceanic back-arc basin. In contrast, we assume that Paleo-Tethys was a large ocean basin which was eliminated directly at the southern margin of the South Kunlun where no oceanic back-arc region existed. (C) 2000 Elsevier Science Ltd. All rights reserved.
اللغة الأصلية | English |
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الصفحات (من إلى) | 637-650 |
عدد الصفحات | 14 |
دورية | Journal of Asian Earth Sciences |
مستوى الصوت | 18 |
رقم الإصدار | 6 |
المعرِّفات الرقمية للأشياء | |
حالة النشر | Published - 2000 |
منشور خارجيًا | نعم |
ASJC Scopus subject areas
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