塔里木盆地西南部早白垩世风成沙丘古风向测量与古风带恢复

Palaeowind direction measurements and palaeowind belt reconstruction of the Early Cretaceous eolian dunes in southwastern Tarim Basin,Xinjiang

摘要: 本文通过对塔里木盆地西南部早白垩世风成沙丘的前积层产状的测量,恢复了当时的古风向和古风带。研究结果表明:当时盛行东北风,研究区属于东北信风带,正好位于北半球中低纬度沙漠带之中。

Abstract: The dips of the foreset beds of the Early Cretaceous eolian dunes in southwestern Tarim Basin,Xinjiang are measured and the palaeowind directions and palaeowind belts are reconstructed in this study.The results of research show that the northeast winds were prevailing and the northeast trade wind belts predominated during the Early Cretaceous.It follows that the study area was just located in the low and middle latitude desert zones of the Northern Hemisphere during the Early Cretaceous.