| 利用沉积地球化学特征分析古环境及海平面变化——以鲁西东部中下寒武统为例 |
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| 引用本文： | 张国仁.利用沉积地球化学特征分析古环境及海平面变化——以鲁西东部中下寒武统为例[J].国土资源,1997(1). |
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| 作者姓名： | 张国仁 |
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| 作者单位： | 地质矿产部辽宁地质矿产勘查开发局区域地质调查队 |
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| 摘 要： | 过对鲁西东部中下寒武统研究表明：利用δ１３Ｃ和δ１８Ｏ以及Ｓｒ，Ｎｉ，Ｖ，Ｂａ，Ｂ元素地球化学特征，不仅可以判断沉积古气候、古盐度、古水温、氧化－还原条件，而且还能提供海平面变化旋回及暴露－间断面确立的依据。研究证明此方法是非常有效的。
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| 关 键 词： | 碳、氧同位素NiSrBaVB 古环境 海平面变化 沉积地球化学 |
GEOLOGICAL CHARACTERISTICS AND EMPLACEMENT MECHANISM OF CALEDONIAN INTRUSIVE ROCKS IN JIANP ING,LIAONING |
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| Chen Shuiang Gao Shirong Li Suxia.GEOLOGICAL CHARACTERISTICS AND EMPLACEMENT MECHANISM OF CALEDONIAN INTRUSIVE ROCKS IN JIANP ING,LIAONING[J].Land & Resources,1997(1). |
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| Authors: | Chen Shuiang Gao Shirong Li Suxia |
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| Abstract: | The Caledonian intrusive rocks in Jianping emplaced in the early stage of Caledonian,which the U-P concordant ages is 573.9Ma.According to rock lineage unit subdivision criterion,the intrusive rocks from early to late successively can be divided into Shanggou-unit diorite,Zhoujiatai-unit quartz diorite,Fangshen-unit granodiorite,Yangpo-unit granite,all these units belonging to Shangmajiazi ultra-unit.The genisis type is I-type and the material came from the lower crust.The emplacement mechanism is ballon-expansion style.Owing to the multiphase pulsating intrusion,the struction is a complete. |
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| Keywords: | Shangmajiazi Ultra-unit I-type Ballon-expansion style |
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