THE CARBONIFEROUS-PERMIAN STRATIGRAPHIC DIVISION AND CORRELATION IN THE SONGLIAO BASIN AND ITS PERIPHERAL AREAS
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摘要: 以东北地区晚古生代大地构造演化最新研究进展为主要依据，结合地层发育及生物古地理特征，将研究区分为2个地层大区，5个地层区，9个地层分区.在各省区岩石地层清理结果的基础上，结合近年来区域地质调查及地层学方面的研究进展及本次工作的新认识，建立起各地层区岩石地层序列.利用已有生物化石资料，结合最新的牙形刺、孢粉等微体化石及同位素测年资料，应用生物地层和同位素年代地层的综合研究方法，基本明确了各组级岩石地层单位时代，并将其纳入最新的国际年代地层系统.在不同地层区之间进行横向对比，建立了松辽盆地外围石炭-二叠系在国际年代系统框架下的地层划分对比格架.Abstract: The Carboniferous-Permian strata in the Songliao Basin and its surrounding areas can be divided into two stratigraphic regions, including five areas and nine sub-areas, on the basis of the latest study on Late Paleozoic geotectonic evolution in Northeast China and stratigraphic development and biopaleogeographic characteristics. The sequence of each stratigraphic area is established based on the provincial lithostratigraphic revision work with regional geological survey and stratigraphic research in recent years. The geological time of each formation is basically defined and incorporated into the latest international chronostratigraphic system with the comprehensive study method of biostratigraphy and isotope chronostratigraphy, according to existing fossil information, particularly the latest microfossils like conodonts and sporomorph, and isotopic dating data. At the end, with horizontal comparison between different stratigraphic areas, the Carboniferous-Permian stratigraphic division and correlation framework is established in the Songliao Basin and its surrounding areas in the international chronostratigraphic system.
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