辽西义县组与冀北大店子组、西瓜园组的对比

CORRELATION BETWEEN YIXIAN FORMATION IN WESTERN LIAONING AND DADIANZI AND XIGUAYUAN FORMATIONS IN NORTHERN HEBEI

摘要: 辽西义县组与冀北大店子组、西瓜园组的对比关系一直存有分歧.综合分析前人生物地层学资料，并结合同位素年代学，提出老公沟层、业南沟层、尖山沟层和冀北滦平盆地大店子组1~2段及3~4段下部相当，大康堡层可与大店子组3~4段上部对比，金刚山层与西瓜园组大致相当.

Abstract: The comprehensive correlation between the Yixian Formation in western Liaoning and the Dadianzi, Xiguayuan Formation in northern Hebei has long been a controversial problem. Based on the biostratigraphy and isotopic ages, the Laogonggou (Lujiatun),Yenangou (Xiatulaigou),Jianshanggou (Zhuangchengzi) beds of Yixian Formation may be correlated with the lower part (1st and 2nd Members and the lower part of 3rd and 4th Members) of the Dadianzi Formation, suggesting that the Dakangpu beds of the Yixian Formation correlate with the upper part (the upper part of 3rd and 4th Members) of the Dadianzi Formation;the Xiguayuan Formation is largely equivalent to the Jingangshan bed of the Yixian Formation