吉林省石炭纪岩相古地理特征及沉积相模式

THE CARBONIFEROUS LITHOFACIES—PALAEOGEOGRAPHIC FEATURES AND THE SEDIMENTARY FACIES MODEL IN JILIN PROVINCE

本文通过大量的实际资料分析对吉林省石炭纪沉积相进行了划分:早石炭世划分为两个相区,6个相带;晚石炭世划分为5个相区,8个相带,并建立了沉积相模式。

Through analysis on a lot of factual materials, the authors make a preliminary study on the Carboniferous lithofacies and palaeogeographic features in Jilin province and preliminarily delineate the old marine area and determine the palaeotectonic features.A division of facies belt is also given. The early Carboniferous sedimentation is dividedinto terrestrial marginal facies region and platform facies region. Each facies region is subdivided into three facies belts.The late Carboniferous sedimentation is divided into the platform area and geosynclinal area. The geosynclinal area is subdivided into the terrestrial marginal facies region and platform facies region. Each facies region includes two facies belts. The southern platform area is divided into. 1) terrestrial facies region, and 2)marine-terrestrial transitional facies and terrestrial marginal facies region. The latter includes four facies belts. According to the facts mentioned above, the facies model is established.