广西陶圩盆地蒸发岩系特征及其地质时代

广西横县陶圩盆地系一中生代小型断陷盆地。盆地内发育一套红色陆源碎屑－化学岩型沉积。蒸发岩系主要由钙芒硝岩、（硬）石膏岩、泥质白云岩及泥岩、粉砂岩组成，厚达５００多ｍ，从下至上组成一个淡－咸－淡的成盐旋回。该蒸发岩系的孢粉组合属晚白垩世上仑期－赛诺期，其所在地层应属上白垩统，而非前所惯称之下白垩统新隆组

CHARACTERISTCS AND GEOLOGIC AGE OF EVAPORATIC SQUENCE IN TAOXU BASIN IN GUANGXI

The Taoxu basin, a little block basin of Mesozoic age, developed in itself a set of red terrigenous chemical sedements of which evaporatic sequence is made up essentially of glauberitite, gypsolith, argillaceous dolomite, mudstone and siltstone. The whole of the sequence thichens as many as above 500 m, top down expressed by a salt genic cycle from fresh through salt back to fresh. According to its sporopollen evidence of Turonian Senonian stage, the sequence should be subjected to rather the upper Cretaceous age than the widely accepted lower Cretaceous one.