塔里木盆地英买(YM)2井含笔石地层

GRABTOLTE-BEARING STRATA OF THE WELL YM-2 IN TARIM BASIN

本文对塔里木盆地英买（YM）2井含笔石地层作了初步的分析研究。这些笔石标本一般保存成薄膜状于数千米之下的泥岩或泥质粉砂岩之中。其地质时代分布从奥陶纪至早志留世早期。其含笔石的地层层位大致可和塔里木盆地西北缘柯坪山区相应的地层层位对比，分别属于其浪组、印干组和柯坪塔格组。

The present paper deals with the graptolite,- bearing strata of the well YM - 2 in TarimBasin. The graptolites are generally preserved as films in mudstones or muddy siltstones atthe depths of thousands meters beneath the surface. They ranged from Ordovician to earlyearly Silurian interval. The graptolillte --bearing strata may be correlated with those of theKelping mountains of the northwestern margin of Tarim Basin and belong to the Qilang for-mation,Yingan formatlon and Kelplngtag formation respectively.