山东中南部地区含金刚石燧石砾岩的地貌特征和形成时代

THE GEOMORPHOLOGICAL CHARACTERISTICS AND FORMING PERIOD OF DIAMOND—BEARING CHERT CONGLOMERATE IN CENTRAL SOUTHERN REGION OF SHANDONG

摘要:

本文对山东中南部含金刚石燧石砾岩地区的地貌、新构造、早第三纪地层进行了研究和划分,在该区首次发现了河流袭夺现象。本区含金刚石燧石砾岩主要赋存在古岩溶地貌中,其孢粉组合是以杉科粉占优势(特别是破隙杉粉),栎粉、榆粉也有较高含量,以热带、亚热带植物花粉为主的基本特征,含金刚石燧石砾岩的形成时代为早第三纪渐新世。

Abstract:

The Paper presents a geomorphological and neotectonic study and the stratigraphical divison of Eogene in the central and southern region in Shandong Province where diamond-bearing chert and conglomerate are distributed.River capturing is found there for the first time,where diamondiferous chert conglomerate occurs mainly in ancient karst.Taxodiaceae,especially Taxodiacepollenites hiatus kremp,predominates in sporo-pollen components and Quercoidiles polonie and Ulmipollenites Wolff reveal a high content,show...