Ophiolite obduction and geologic evolution of the Oman Mountains and adjacent areas

Research Article| August 01, 1977 Ophiolite obduction and geologic evolution of the Oman Mountains and adjacent areas W. K. GEALEY W. K. GEALEY 1Chevron Overseas Petroleum Inc., P.O. Box 7643, San Francisco, California 94120 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1977) 88 (8): 1183–1191. https://doi.org/10.1130/0016-7606(1977)88<1183:OOAGEO>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation W. K. GEALEY; Ophiolite obduction and geologic evolution of the Oman Mountains and adjacent areas. GSA Bulletin 1977;; 88 (8): 1183–1191. doi: https://doi.org/10.1130/0016-7606(1977)88<1183:OOAGEO>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Structural and stratigraphic relationships in the Oman Mountains developed by Late Cretaceous collision between the northern passive margin of the African continent and an island arc. Field relationships and metamorphic facies indicate that ophiolite obduction was accomplished by continental underthrusting of the fore-arc limb of an island-arc edifice at considerable depth. Uplift of the ophiolite slab resulted from both compressional shortening and isostatic interaction of the continental crust with the mantle rock it underthrust. This model may apply to many other major ophiolite areas of the world, specifically Newfoundland, Cuba, northern Venezuela, Cyprus, the Urals, eastern Celebes, New Guinea, and New Caledonia.Events preceding the Mesozoic convergence of Africa and Eurasia and resultant Oman collision include late Paleozoic rifting in the present Turkey-Iran area, which produced a microcontinent comprising the Menderes and Kirsehir massifs of Turkey and the Rezaiyeh-Esfandagheh belt of Iran, separated from Eurasia by a northerly arm of the Tethys and from Africa by a southerly arm of the Tethys. Central Iran and central Afghanistan–southern Pamir–Karakorum are believed to have been a part of Gondwana positioned between Somalia and India. They too were affected by late Paleozoic rifting but did not reach their present position until early Tertiary time, driven north along with India by sea-floor spreading of anomaly 28 time and later. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.