| 藏北若拉岗日结合带上、下二叠统之间不整合界线的发现及其地质意义 |
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| 引用本文： | 杨子江,李学智,王海涛,李咸阳.藏北若拉岗日结合带上、下二叠统之间不整合界线的发现及其地质意义[J].地质通报,2007,26(4):398-403. |
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| 作者姓名： | 杨子江 李学智 王海涛 李咸阳 |
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| 作者单位： | 新疆地质调查院,新疆,乌鲁木齐,830011 |
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| 基金项目： | 中国地质调查局《玛尔盖茶卡幅（I45C001002）、玉帽山幅（145C001003）、岗扎日幅（I45C001004）1：25万区域地质调查》项目（编码：200313000004）部分成果.致谢：文中的有关化石由中国地质大学冯庆来教授、中国科学院南京地质古生物研究所欧阳舒教授鉴定,在论文撰写过程中还得到了他们的指导,在此深表谢意. |
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| 摘 要： | 若拉岗日结合带是金沙江结合带的西延部分,通过近年来的研究和地质调查,在该地区和邻区原命名的中、上三叠统若拉岗日群(T2-3rl)中有了较多的新发现。这些新发现表明这套地层是多时代地层的组合体,不限于中、上三叠统,并发现上二叠统地层与下伏石炭系—下二叠统之间为不整合接触关系,与上覆下三叠统之间为整合接触关系。这些发现都为重新认识该地区的地质构造演化提供了重要的资料。
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| 关 键 词： | 藏北 若拉岗日结合带 上二叠统 下二叠统 不整合界线 |
| 文章编号： | 1671-2552（2007）04-0398-06 |
| 收稿时间： | 2006-10-16 |
| 修稿时间： | 1/5/2007 12:00:00 AM |
Discovery of the Upper/Lower Permian unconformity in the Rola Kangri junction zone, northern Tibet, China and its geological significance |
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| YANG Zi-jiang,LI Xue-zhi,WANG Hai-tao,LI Xian-yang.Discovery of the Upper/Lower Permian unconformity in the Rola Kangri junction zone, northern Tibet, China and its geological significance[J].Geologcal Bulletin OF China,2007,26(4):398-403. |
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| Authors: | YANG Zi-jiang LI Xue-zhi WANG Hai-tao LI Xian-yang |
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| Abstract: | The Rola Kangri junction zone is the westward extension of the Jinsha River junction zone. Through geological studies and investigations of the zone in recent years, many new discoveries have been made in the originally named Middle-Late Triassic Rola Kangri Group (T2-3rl) in this area and its neighboring areas. These discoveries indicate that this sequence of strata are an assembly of strata of many ages, which is not restricted to the Middle-Upper Triassic, and it has been found that the contact relationships between the Upper Permian and its underlying Carboniferous-Lower Permian are unconformable and that its contact relationships to its overlying Triassic are conformable. All these discoveries provide important information for reunderstanding the tectonic evolution in this area. |
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| Keywords: | northern Tibet Rola Kangri junction zone Upper Permian Lower Permian unconformity |
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