| 兰坪中新生代沉积盆地演化 |
| |
| 引用本文： | 牟传龙,王剑.兰坪中新生代沉积盆地演化[J].矿物岩石,1999,19(3):30-36. |
| |
| 作者姓名： | 牟传龙 王剑 |
| |
| 作者单位： | 成都地质矿产研究所!成都610082 |
| |
| 基金项目： | 国家攀登预选项目，国家资源部重点科技攻关项目 |
| |
| 摘 要： | 兰坪中新生代沉积盆地形成和演化与金沙江洋的俯消减及洋陆转换过程密切相关，记录了其盆－山转换过程，早二叠世晚期－晚二叠世时期，由于金沙江洋的俯冲消减，形成了金沙江弧－盆系的空间配置，兰坪地区成为弧后盆地，早中三叠世，金沙江弧－盆系及东西两侧的昌都－兰坪陆块和中咱－中甸陆块的构造沉积式样发生大的转米，开始了兰坪中新生代盆－山转换历史，由于弧陆碰撞作用，使得兰坪分国地由弧后盆地转化成弧后前陆舅地，盆地中
|
| 关 键 词： | 中新生代 盆－山转换 盆地 沉积盆地演化 |
THE EVOLUTION OF THE SEDIMENTARY BASIN IN LANPING AREA DURING MESOZOIC-CENOZOIC |
| |
| Mou Chuanlong,Wangjian,Yuqian,Zhang Lisheng.THE EVOLUTION OF THE SEDIMENTARY BASIN IN LANPING AREA DURING MESOZOIC-CENOZOIC[J].Journal of Mineralogy and Petrology,1999,19(3):30-36. |
| |
| Authors: | Mou Chuanlong Wangjian Yuqian Zhang Lisheng |
| |
| Abstract: | The formation and evolution of Mesozoic-Cenozoic sedimentary basin of Lanping are closely related to the subduction of Jinshajiang ocean and to the transition process of ocean and continent. The tectonic patterns in the Lanping area consist, from west to east, of Lancangjiang orogenic belt, Zhaduo-Jinghong volcanic arc(Late Palaeozoic to Early Mesozoic), Jiangda-Weixi-Luchun volcanic arc(Late Palaeozoic to Early Mesozoic) and Jinshajiang-Ailaoshan orogenic belt, respectively. During the Triassic to Cretaceous, the Lanping sedimentary basin showed the back arc foreland basin(retro arc basin) as a result of the thrusting of the Lancangj-iang ocean, the collision between island and continent, the subduction of the Jinshajiang-Ailaoshan ocean as well as collisional orogenic activity. During Triassic the sediments in the basin vary from the deep water basin facies, shallow shelf facies , littoral facies, tidal facies to delta facies successively and during the Jurassic-Cretaceous the sediments vary from tidal facies, delta facies, lacustrine facies to river facies successively. The Lanping sedimentary basin exhibits a transition from back arc foreland basin into strike slip pull apart basin because of the northward intracontinental convergent orogeny of Indian plate from the Late Cretaceous to Eocene. The basin was filled by the terrigenous clastic sediments of the lacustrine facies, delta facies, river facies, alluvial fan facies and fluvial facies. This long-term sedimentary basin-orogen transition history in Lanping area has controlled the migration regimes of the geofluids and the emplacement of the ore deposits and thus created favourable metallogenic conditions. For this reason, the Lanping area is well known as one of the important metallogenetic provinces, which showed coupling relationship among basin, orogenic belt, geofluids and metallogenesis. |
| |
| Keywords: | Mesozoic-Cenozoic sedimentary basin-orogen transition back arc foreland basin strike slip pull apart basin |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
