沉积与特提斯地质2011，Vol.31Issue(1)：28-34,7.
川西前陆盆地下侏罗统白田坝组沉积特征
Sedimentary characteristics of the Lower Jurassic Baitianba Formation in western Sichuan foreland
程立雪 1陈洪德 1徐胜林 1李洁 1钟怡江 1隆轲1
作者信息
- 1. 成都理工大学,沉积地质研究院,四川,成都,610059
- 折叠
摘要
Abstract
The sedimentary facies and palaeogeography of the Lower Jurassic Baitianba Formation in western Sichuan foreland basin is explored on the basis of weU logs, outcrops and cores in integration with regional geological data. The Lower Jurassic Baitianba Formation consists of four sedimentary facies, including the alluvial fan, meandering river, lacustrine delta and lacustrine facies. The alluvial fan facies may be subdivided into two 8ubfacies : mid-fan and fan fringe subfacies. The meandering river facies may also be subdivided into two subfacies :channel and floodplain subfacies. The lacustrine delta facies include the delta plain and delta front subfacies. The lacustrine facies include the littoral-shallow lake and bathyal lake subfacies. The alluvial fans are widely developed in Qionglai, Anxian, Jiangyou, Wangcang and Nanjiang. The alluvial fans in Anxian extends eastwards, and graded into fluvial sandstone facies and delta facies in Jintang and Santai, and finally developed into lake facies,displaying the alluvial fan-river-delta-lake sedimentary model.关键词
川西前陆盆地/下侏罗统/白田坝组/沉积特征Key words
western Sichuan foreland basin/ Lower Jurassic/ Baitianba Formation/ sedimentary characteristics分类
天文与地球科学引用本文复制引用
程立雪,陈洪德,徐胜林,李洁,钟怡江,隆轲..川西前陆盆地下侏罗统白田坝组沉积特征[J].沉积与特提斯地质,2011,31(1):28-34,7.
