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| LITHOLOGY OF GABBRO OF THE DIYANMIAO OPHIOLITE IN INNER MONGOLIA |
| BAI Hui, ZHANG Hong-chen, HE Qiu-li, SONG Peng |
| Shijiazhuang University of Economics, Shijiazhuang 050031, China |
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Abstract The Diyanmiao ophiolite, consisting of serpentinized enstenite pyrolite, gabbro, basalt and spilite-keratophyre, is situated in the Daxinganling-Mongolia orogenic belt between Sino-Korean paleo-plate and Siberia paleo-plate. Petrographical study shows that the Diyanmiao gabbro can be classified into bedded gabbro (with cumulatic texture)and isotropic gabbro (with gabbro texture), both of which experienced low-medium metamorphic reformation. On the basis of field survey and study of geology, petrography and lithochemistry, the Diyanmiao gabbro is believed to form in a smallscaled monocycle closed system under the active continental margin or island arc.
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Received: 08 June 2012
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2012, Vol. 21 
