| 辽宁庄河鞍子山超单元岩浆就位机制 |
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| 引用本文： | 王启伟,王爱春.辽宁庄河鞍子山超单元岩浆就位机制[J].地质通报,1998(2). |
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| 作者姓名： | 王启伟 王爱春 |
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| 作者单位： | 辽宁地勘局区调队 |
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| 摘 要： | 鞍子山超单元由４个单元组成，各单元中的叶理极发育，闪长质包体强烈压扁，钾长石斑晶定向排列，以上三者均平行于剪切带分布。由早期到晚期具有叶理构造减弱，包体数量减少，压扁程度降低，斑晶定向逐渐消失的变化趋势。包体应变指数Ｋ值为０＜Ｋ＜１，属于压扁型椭球体。根据包体旋转指向和定向薄片资料分析，鞍子山超单元主要受北东向吴炉—郑家山—上腰岭左旋剪切带的控制，属于楔形侵入膨胀式就位机制的产物。
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| 关 键 词： | 鞍子山超单元 叶理构造 闪长质包体 楔形膨胀式侵入 岩浆就位机制 |
MAGMA EMPLACEMENT MECHANISM OF THE ANZISHAN SUPER UNIT IN THE EAST PART OF ZHUANGHE, LIAONING |
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| Wang Qiwei and Wang Aichun.MAGMA EMPLACEMENT MECHANISM OF THE ANZISHAN SUPER UNIT IN THE EAST PART OF ZHUANGHE, LIAONING[J].Geologcal Bulletin OF China,1998(2). |
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| Authors: | Wang Qiwei and Wang Aichun |
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| Abstract: | The Anzishan super unit in Zhuanghe, Liaoning, consists of four units. They are characterized by well developed foliation, strongly flattened dioritic inclusions and oriented K feldspar phenocrysts, the three of which are all parallel to the shear zone. From the early to late stages the units had the following trends of change: foliation weakened, inclusions were reduced and their degree of flattening lowered and the preferred orientation of the phenocrysts disappeared gradually. The Flinn index K obtained by the strain measurement of the inclusions is 0
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| Keywords: | Anzishan super unit dioritic inclusion magma emplacement mechanism |
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