依沙克群是 80年代建立的一个岩石地层单元。由于缺乏可信的古生物学证据 ,因此关于该套地层的时代一直颇有争议。近期 ,笔者首次在该套地层上部的复理石中发现了早古生代和晚泥盆 -早石炭世 2个放射虫组合。两套含有化石的地层间为冲断接触。结合前人对依沙克群下部岩性段基性熔岩形成年龄的研究 ,笔者认为依沙克群已不能作为一个统一的岩石地层单元存在 ,而应予解体 Isaacs was a lithostratigraphic unit established in the 1980s. Due to the lack of credible paleontological evidence, the age of the formation has been controversial. Recently, for the first time, the authors found two radioactive combinations of Early Paleozoic and Late Devonian-Early Carboniferous in flysch of the upper strata. Between two sets of fossil-bearing strata contact thrust. Based on the previous studies on the age of the basic lavas in the lithology of the lower part of the Ishaqa group, the author thinks that the Ishaqa group can not exist as a unified unit of rock strata and should be disintegrated