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| 兰坪盆地古近纪沉积相类型及沉积环境演化 | |
| 引用本文： | 朱志军,姜勇彪,郭福生,侯增谦,杨天南,薛传东.兰坪盆地古近纪沉积相类型及沉积环境演化[J].岩石矿物学杂志,2011,30(3):409-418. |
| 作者姓名： | 朱志军 姜勇彪 郭福生 侯增谦 杨天南 薛传东 |
| 作者单位： | 1. 东华理工大学,地球科学学院,江西,抚州,344000 2. 东华理工大学,地球科学学院,江西,抚州,344000;中国地质科学院,地质研究所,北京,100037 3. 中国地质科学院,地质研究所,北京,100037 4. 昆明理工大学,云南,昆明,650093 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 通过对兰坪盆地野外露头及相关室内研究,分析了区内古近纪的沉积环境、层序特征、沉积相展布及其演化特征。认为古近纪主要发育冲积扇、河流、三角洲和湖泊环境。沉积建造为一个完整的盆地演化旋回:低位期,印度板块向欧亚板块的俯冲挤压造成兰坪走滑拉分盆地的形成,沉积了一套局限的湖盆相红色含膏盐细碎屑岩建造;湖扩期,挤压应力场转变为拉张应力场,湖盆扩大,大面积沉积了一套滨浅湖相紫红、砖红色砂泥岩互层沉积;湖缩期,受晚始新世喜马拉雅运动一幕的影响,应力场再次转变为强烈挤压,东西两侧造山带共同向盆地内推覆扩展,致使盆地范围明显缩小,仅在推覆体前缘形成一系列快速充填的小型山前陆相前陆盆地。层序古地理编图显示,蒸发岩发育于低位体系域,与低位期的沉积充填特点和气候有关,极具有找钾盐矿的前景。 |
| 关 键 词： | 兰坪盆地 古近系 沉积环境 钾盐 |
| 收稿时间： | 2010/11/30 0:00:00 |
| 修稿时间： | 2011/3/30 0:00:00 |
Palaeogene sedimentary facies types and sedimentary environment evolution in Lanping basin |
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| ZHU Zhi-jun,JIANG Yong-biao,GUO Fu-sheng,HOU Zeng-qian,YANG Tian-nan and XUE Chuan-dong.Palaeogene sedimentary facies types and sedimentary environment evolution in Lanping basin[J].Acta Petrologica Et Mineralogica,2011,30(3):409-418. | |
| Authors: | ZHU Zhi-jun JIANG Yong-biao GUO Fu-sheng HOU Zeng-qian YANG Tian-nan and XUE Chuan-dong |
| Institution: | ZHU Zhi-jun1,JIANG Yong-biao1,GUO Fu-sheng1,HOU Zeng-qian1,2,YANG Tian-nan2 and XUE Chuan-dong3(1.East China Institute of Technology,Fuzhou 344000,China,2.Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,3.Kunming University of Science and Technology,Kunming 650093,China) |
| Abstract: | Based on field observation and indoor integrated analysis of some 20 outcrop profiles in Lanping basin in combination with such division criteria as regional sedimentary framework and sedimentary characteristics,the authors analyzed Palaeogene sedimentary environment,sequence stratigraphic features,sedimentary facies distribution and evolutionary features.Some tentative conclusions have been reached: In Palaeogene,alluvial fan,river,delta and lacustrine environments were dominantly developed in the Lanping ... |
| Keywords: | Lanping basin Palaeogene sedimentary environment potash salt |
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