| 新疆哈密黄山韧性挤压带超塑性拉伸砾石的特征及形成机制 |
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| 关键词:ductile compressing zone pebble superplastic stretching formational mechanism Huangshan in Hami |
| 基金项目:国家305项目 |
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| Characteristics and Formational Mechanism of Superplastic Stretching Pebbles in Huangshan Ductile Compressing Zone in Hami Area,Xingjiang |
| Deformed pebbles in Huangshan ductile compressing zone in Hami area, Xingjiang show characteristics of superplastic stretching, axial ratios of maxium axis to minium axis (X/Z) of average deformed ellipsoid pebbles being more than ten. Such datas as microstructure and supermicrostructure of deformed pebbles, quartz fabric relationship among stretching strain value of deformed pebbles and axial ratios of quartz and interval between inner foliation, reveal that compression and its result in grannulation and stretching of mineral and reduce of interval between in-' ner foliation within pebble may be the operative deformational mechanism of superplastic stretching of pebbles Gran size and rock type of deformed pebble have certain sensibility to stretching deformation. In addition, while stretching strain value increases, quartz fabric of siliceous pabbles evolues from type V maxium small-circle girdle and crossed girdle to type Ⅷ and type Ⅰ maxium. |
| XU Xing-wang,MA Tian-lin,SUN Li-xi,LI Gui-shu.1996.Characteristics and Formational Mechanism of Superplastic Stretching Pebbles in Huangshan Ductile Compressing Zone in Hami Area,Xingjiang[J].Acta Geoscientica Sinica,17(3):276-281. |
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