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| 长枪穹隆体变质岩岩石矿物学特征及其变质作用 | |
| 引用本文： | 罗华翠,阚泽忠,杨桦,杨泽湘,秦华中,易同富.长枪穹隆体变质岩岩石矿物学特征及其变质作用[J].四川地质学报,2012(2):133-138. |
| 作者姓名： | 罗华翠 阚泽忠 杨桦 杨泽湘 秦华中 易同富 |
| 作者单位： | 1. 四川省地矿局物探队,成都610072 2. 四川省地质调查院,成都610081 3. 四川省地矿局攀西地质队,四川西昌615000 4. 四川省地矿局区调队,成都双流610213 |
| 摘 要： | 长枪穹隆体是扬子地台西缘四川丹巴—木里一带具有代表性的穹隆状变形变质体之一.通过对该穹隆体变质岩主要变质矿物及变质特征的研究,可将其划分四个变质作用阶段.根据穹隆核部出现点状锰铁铝榴石带、递增变质带分布与穹隆构造分带不完全重合、主期变质地热梯度较高等特征,认为长枪穹隆体具有构造-热穹隆性质 |
| 关 键 词： | 穹隆体 变质岩 P-T-t演化趋势 四川木里长枪 |
Mineralogy and Mtamorphism of the Changqiang Metamorphic Dome |
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| LUO Hua-cui K.AN Ze-zhong YANG Hua YANG Ze-xiang Q,N Hua-zhong YI Tong-fu.Mineralogy and Mtamorphism of the Changqiang Metamorphic Dome[J].Acta Geologica Sichuan,2012(2):133-138. | |
| Authors: | LUO Hua-cui KAN Ze-zhong YANG Hua YANG Ze-xiang Q N Hua-zhong YI Tong-fu |
| Institution: | 1-Geophysical Exploration Team, SBGEEMR, Chengdu 610061; 2-Sichuan Institute of Geological Survey, Chengdu 610081; 3- Panxi Geological Party, BGEEMRSP, Xichang, Sichuan 615000; 4- Regional Geological Surveying Team, BGEEMRSP, Chengdu 610213) |
| Abstract: | The Cangqiang dome is one of typical metamorphic domes in the Danba-Muli belt on the west margin of the Yangtze platform. 4 metamorphic stages may be divided in the metamorphic dome on the basis of mineralogy and metamorphism. Imperfect coincidence of spotted mangan-almandite zone and progressive metamorphic zone with structural zonation of the dome and higher geothermal gradient in the principal metamorphic stage indicate that the Changqiang metamorphic dome is a tectonic-thermal one. |
| Keywords: | dome metamorphic rock P-T-t evolutionary trend Changqiang Muli Sichuan |
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