四川省木里水洛地区青白口纪下喀沙组的建立

详细信息

刊出日期: 1994-11-15

THE ESTABLISHMENT OF THE QINGBAIKOU’AN LOWER KASHA FORMATION IN ShuiLO AREA,MULI,SICHUAN

Publish Date: 15 November 1994

摘要: 在地层清理过程中发现，前人所划木座组，实际上包括了两套地层，下部那套变质火山岩、火山碎屑—陆屑碎屑岩系地层，其时限应属青白口纪。故有必要将其从木座组中划分出来，建立新的岩石地层单位──下喀沙组。本文对下喀沙组层型剖面进行了描述。

Abstract: When sorting stratigraphic units,it is found that the Muzuo Forrnation defined by predecessors in fact includestwo sequences of strata and that the time span of the Iower sequence-the series of metavolcanic rocks and pyro-clastic-continental clastic rocks-should be Qingbaikou’ an. So it is necessary to separate it from the Muzuo Forma-tion and establish a new lithostratigraphic unit the Lower Kasha Formation. This paper describes the stratotypesection of the Lower Kasha Formation.