| The study of Neo-Tethys Paleogeography in Marri-Asbkeshan area,
north-northwest Doruneh–Kashmar subzone (Khartouran) |
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| 关键词:Sabzevar, Doruneh-Kashmar trough, Cimmerian, Austrian, Laramid, melange |
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| 摘要: |
| The study of Neo-Tethys Paleogeography in Marri-Asbkeshan area,north-northwest Doruneh–Kashmar subzone (Khartouran) |
| The study area is a small part of the Sabzevar structural zone, and is confined between Semnan and Khorasan provinces.
The oldest sedimentary rocks of this region are Middle Jurassic in age with horizons of calc-alkaline rhyolitic-rhyodacitic lavas in between. First alkaline basaltic lavas accompanied by diabasic dikes in this region appeared along with Early Cretaceous lime-stone. Late Cretaceous rocks are composed of volu-minous calc-alkaline rhyodacitic-rhyolitic and trachy-andesitic lavas and dikes, and basaltic dikes. With abundance pinkish-cream plagic limestone this has been overlain by Paleocene rocks. |
| R. KOHANSAL,S. ZOLFAGHARI.2009.The study of Neo-Tethys Paleogeography in Marri-Asbkeshan area,north-northwest Doruneh–Kashmar subzone (Khartouran)[J].Acta Geoscientica Sinica,30(S1):29. |
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