论文部分内容阅读
松辽盆地为一中新生代沉积盆地,区内白垩系分布之广、沉积厚度之大、地层发育之完好、各门类古生物化石属种丰富多彩之程度,在国内首屈一指,它也是我国最大的油田之一。五十年代以来,地质工作者在油田区域性地层划分对比方面取得了很大的进展,但对本区白垩纪地层时代的归属问题,仍有争议。本文建立了本区孢粉组合序列,系统讨论了各组时代的归属、沉积时的古气候和古植物地理区,并讨论了本区的典型代表—鹰粉类在我国的分布范围。
The Songliao Basin is a Mesozoic-Cenozoic sedimentary basin. The Cretaceous is widely distributed in the area. The sedimentary thickness is large and the strata are developed well. The abundance of all kinds of paleontological fossils is the highest in China, and it is also the largest oilfield in China one. Since the 1950s, great progress has been made by the geological workers in the regional stratigraphic division of the oilfields, but there is still controversy over the ownership of the Cretaceous strata in this area. In this paper, the sequence of sporopollen assemblages in this area was established. The veracity of each age, the palaeoclimate and the paleo-geography of the sediments were systematically discussed. The distribution of the eagles in China was discussed.