| 东准噶尔卡拉麦里地区巴塔玛依内山组火山岩特征和年代确定 |
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| 引用本文： | 谭佳奕,吴润江,张元元,王淑芳,郭召杰.东准噶尔卡拉麦里地区巴塔玛依内山组火山岩特征和年代确定[J].岩石学报,2009,25(3):539-546. |
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| 作者姓名： | 谭佳奕 吴润江 张元元 王淑芳 郭召杰 |
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| 作者单位： | 造山带和地壳演化教育部重点实验室,北京大学地球与空间科学学院,北京,100871 |
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| 基金项目： | 国家重点基础研究规划项目（2007CB411305）和国家自然科学基金项目（40802042） |
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| 摘 要： | 巴塔玛依内山组火山岩在新疆准噶尔盆地东部及其周缘山区广泛分布，是陆东、五彩湾等地区卡拉麦里大气田的主要储层。根据两个实测剖面和一口钻井岩性剖面的对比，巴塔玛依内山组陆相喷发火山岩具有多期次，间歇性喷发的特征，沉积岩夹层是主要的喷发间断面标志。火山岩地层厚度变化快，岩相岩性变化大。岩石化学分析表明巴塔玛依内山组火山岩主要是亚碱性-碱性、高钾的中基性岩。巴塔玛依内山组火山岩锆石SHRIMP U-Pb定年结果为350.0±6.3Ma，结合其上覆地层的生物化石证据，认为巴塔玛依内山组属于下石炭统。
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| 关 键 词： | 巴塔玛依内山组 火山岩 SHRIMP U-Pb定年 下石炭统 |
| 收稿时间： | 2008/12/9 0:00:00 |
| 修稿时间： | 2009/1/12 0:00:00 |
Characteristics and geochronology of volcanic rocks of Batamayineishan Formation in Kalamaily, Eastern Junggar, Xinjiang |
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| TAN JiaYi,WU RunJiang,ZHANG YuanYuan,WANG ShuFang and GUO ZhaoJie.Characteristics and geochronology of volcanic rocks of Batamayineishan Formation in Kalamaily, Eastern Junggar, Xinjiang[J].Acta Petrologica Sinica,2009,25(3):539-546. |
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| Authors: | TAN JiaYi WU RunJiang ZHANG YuanYuan WANG ShuFang and GUO ZhaoJie |
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| Institution: | Key Laboratory Orogenic Belts and Crustal Evolution, Misnistry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China;Key Laboratory Orogenic Belts and Crustal Evolution, Misnistry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China;Key Laboratory Orogenic Belts and Crustal Evolution, Misnistry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China;Key Laboratory Orogenic Belts and Crustal Evolution, Misnistry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China;Key Laboratory Orogenic Belts and Crustal Evolution, Misnistry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | The volcanic rocks of the Batamayineishan Formation are widely distributed in eastern Junggar Basin and its neighboring margins. It is the main reservoir of giant gas field in Ludong, Wucaiwan area. Comparing two measured sections and a well lithologic section, the continental volcanic rocks of Batamayineishan Formation are obviously multiple stages and intermittent volcanic activities interrupted by the sedimentary interbeds which are the main indicators of discontinuous interfaces. The thickness of the volcanic rocks vary greatly in different places, changing dramatically not only in lithology but also in lithofacies. Petrochemical analysis suggests the rock types are mainly basic-intermediate which belongs to subalkaline-alkaline and K rich series. This paper report a 350.0±6.3Ma age of volcanic rock by the SHRIMP zircon U-Pb geochronology. Combined with the fossil evidences from the overlying strata, it can be concluded that the Batamayineishan Formation is the Lower Carboniferous. |
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| Keywords: | Batamayineishan Formation Volcanic rocks SHRIMP U-Pb dating Lower Carboniferous |
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