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四川省会理县洪川桥地区,是会理群凤山营组广泛分布地区之一,出露面积达百余平方公里。在洪川桥凤山营组剖面的上部(洪剖119层—108层),发育一套约845m厚的风暴流沉积。现将其特征及形成机制作一初步分析,以供参考。一、岩性特征风暴流沉积物,主要为灰—深灰色粉砂质粉屑灰岩和部分泥质灰岩。有时两者呈薄的互层出现。一般层厚几毫米到几厘米,沿走向在数十厘米或几米内尖灭,形成一个个薄的透镜
Huichuan County, Sichuan Province, Hongchuanqiao area, is the management group Fengshan camp group one of the widely distributed areas, exposing an area of 100 square kilometers. At the upper part of the Fengshanying Formation of Hongchuan Bridge (Hong Chuan 119th-108th floors), a set of storm flow deposits of about 845m thick were developed. Now its characteristics and formation mechanism for a preliminary analysis for reference. First, the lithological characteristics storm flow sediments, mainly ash - dark gray silty limestone and some argillaceous limestone. Sometimes the two appear as thin layers. The general layer thickness of a few millimeters to a few centimeters, along the trend in dozens of centimeters or a few meters out sharp, forming a thin lens