| 索尔库里盆地中-上新世地层特征及其环境意义 |
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| 引用本文： | 常宏,方小敏,安芷生,宋春晖,强小科.索尔库里盆地中-上新世地层特征及其环境意义[J].海洋地质与第四纪地质,2001,21(3):107-111. |
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| 作者姓名： | 常宏 方小敏 安芷生 宋春晖 强小科 |
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| 作者单位： | 1. 中国科学院地球环境研究所
2. 兰州大学资环学院 |
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| 基金项目： | 国家杰出青年基金项目 (4992 810 1)，中科院引进国外杰出人才计划 (人教字 [2 0 0 0 ] 0 0 5 )资助项目 |
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| 摘 要： | 对青藏高原东北部索尔库里盆地的索尔库里达板及茫崖剖面进行了地层学研究，分析了地层的沉积序列，总结了其砂质中粒角砾岩-含砾砂岩-泥质粉砂岩的地层结构韵律性特征，地层剖面中有两个完整的韵律组合，其上被一厚达66m的巨砾岩覆盖，结合所产化石，其时代为中-上新世，粒度的截然变化反映了物源区与沉积区高差的变化，沉积序列的结构特征反映了其沉积的古地理环境发生了4次明显的变化，推测物源区的青藏高原北部发生了多期隆升事件，分析认为中新世较早时期已有一定程度的降升，经过较长时间的风化剥蚀，于中新世晚期发生了一次较为强烈的隆升，而最后造成现今宏伟的地貌特征和隆升事件发生了上新世后期。
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| 关 键 词： | 沉积序列 古地理环境 隆升事件 索尔库里盆地 青藏高原 上新世地层 |
| 文章编号： | 0256-1492(2001)03-0107-05 |
| 修稿时间： | 2001年3月27日 |
MIOCENE-PLIOCENE STRATA FEATURES IN THE SUERKAL BASIN AND THE PALAEO-ENVIRONMENT SIGNIFICANCE |
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| CHANG Hong ,FANG Xiao min ,AN Zhi sheng ,SONG Chun hui ,QIANG Xiao ke.MIOCENE-PLIOCENE STRATA FEATURES IN THE SUERKAL BASIN AND THE PALAEO-ENVIRONMENT SIGNIFICANCE[J].Marine Geology & Quaternary Geology,2001,21(3):107-111. |
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| Authors: | CHANG Hong FANG Xiao min AN Zhi sheng SONG Chun hui QIANG Xiao ke |
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| Institution: | CHANG Hong 1,FANG Xiao min 1,AN Zhi sheng 1,SONG Chun hui 2,QIANG Xiao ke 2 |
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| Abstract: | Sedimentary sequence of strata was analyzed in Suerkaldaban and Mangya sections in the Suerkal basin, north Tibet Plateau. Stratigraphic configuration is rhythmic, characterized by sandy breccia-pebble bearing sandstone-mud siltstone rhythm. There are two complete rhythms underlied by a thickly stratified sandy breccia whose thickness is 66 m. They are in Miocene Pliocene ages according to the fossils in them. Changes in their grain sizes reveal that palaeo depositional environment has changed four times. It is infered that Tibet Plateau has uplifted three times since Miocene, and the last was very intensive and took place in Late Pliocene. |
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| Keywords: | sedimentary sequence palaeo geographic environment uplift event Suerkal basin Tibet Plateau |
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