吉水县螺田安源组地层时代的析疑

摘要

螺田勘探区安源组煤层煤质变化规律异常，因此对其时代提出质疑。从煤系地层中钙质砾岩的岩石及地质体特征入手，分析其成因，指出安源组内存在有假整合构造结构面，进而提出本区安源组时代划分的建议。%The stratigraphic age of Anyuan Formation ,Luotian exploration area was questioned because its ab-normal change law of coal quality in coal seam .Starting from calcrete rock of coal measure strata and the geolog-ical characteristics ,the paper first analyzes its causes ,then points out the occurrence of pseudoconformity struc-tural plane in Anyuan Formation ,and finally proposed the suggestion of age definition of Anyuan Formation .