| 塔中西北部上泥盆统东河砂岩与志留系砂岩中重砂矿物特征与地质意义 |
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| 引用本文： | 钱一雄,何治亮,蔡习尧,陈跃,张军涛.塔中西北部上泥盆统东河砂岩与志留系砂岩中重砂矿物特征与地质意义[J].岩石矿物学杂志,2007,26(2):147-154. |
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| 作者姓名： | 钱一雄 何治亮 蔡习尧 陈跃 张军涛 |
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| 作者单位： | 中国石化石油勘探开发研究院,西部分院,新疆,乌鲁木齐,830011 |
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| 基金项目： | 中国石化集团公司资助项目 |
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| 摘 要： | 沉积物中重矿物分布受物源区、构造抬升与剥蚀作用、古地貌以及沉积古气候、古环境等多种因素影响,因此沉积重砂矿物的研究可应用于物源区、沉积环境的分析,阐明构造旋回与沉积作用的响应关系。本文通过对塔中地区中1井等6口探井上泥盆统东河砂岩和志留系柯坪塔格组砂岩中重砂矿物分析,提出了塔中东河砂岩重砂矿物主要来自稳定的基底再沉积及花岗岩来源,但受近源的基性火山岩及岩浆期后热液作用影响较大;志留系下砂岩重砂矿物主要来自下覆碳酸盐岩、花岗岩和搬运再沉积物,总体形成于稳定的、多物源的构造-沉积环境,物源方向可能是东南至西北方向。
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| 关 键 词： | 重砂矿物 物源 东河砂岩 志留系 塔中地区 |
| 文章编号： | 1000-6524（2007）02-0147-08 |
| 修稿时间： | 2006-04-26 |
Characteristics of heavy minerals from Upper Devonian Donghe sandstone and Silurian sandstone in western Tazhong area, Tarim Basin, and their geological implications |
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| QIAN Yi-xiong,HE Zhi-liang,CAI Xi-yao,CHEN Yue,ZHANG Jun-tao.Characteristics of heavy minerals from Upper Devonian Donghe sandstone and Silurian sandstone in western Tazhong area, Tarim Basin, and their geological implications[J].Acta Petrologica Et Mineralogica,2007,26(2):147-154. |
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| Authors: | QIAN Yi-xiong HE Zhi-liang CAI Xi-yao CHEN Yue ZHANG Jun-tao |
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| Abstract: | The distribution of heavy minerals in sediments is affected by such factors as provenance, uplift and erosion, paleo-topographic features, palaeo-climate and palaeo-environment. The analysis of heavy minerals can be applied to the explanation of the sedimentary response to tectonic cycles based on the provenance and sedimentary environment. The heavy minerals of Upper Devonian Donghe sandstones and sandstone of Lower Silurian Kepingtage Formation from six wells in western Tazhong area were studied in this paper. The results show that heavy minerals from Donghe sandstone were mainly derived from the re-sedimentation of basement rocks and granite, and then underwent alteration or mixing of basic volcanic and magmatic-hydrothermal activities, while those from Lower Silurian sandstone were mostly transported from the sediments of underlying carbonate rocks, granite and re-sedimentary rocks, indicating the stability of the sedimentary and tectonic movement characterized by multi-source sediments, with the transportation direction of sediments probably from southeast to northwest. |
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| Keywords: | heavy minerals provenance Donghe sandstones Silurian Tazhong area |
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