白垩纪大火成岩省及地幔对流.pdfVIP

第 12 卷 第 2 期 ( ) Vol . 12 No . 2 地学前缘 中国地质大学 ,北京 ; 北京大学 2005 年 4 月 Eart h Science Frontier s ( China U niver sit y of Geo sciences ,Beij ing ; Peking U niver sit y) Ap r . 2005 白垩纪大火成岩省与地幔对流 1 1 2 1 1 1 1 邓晋福 , 　莫宣学 , 　M F . J . FL OW ER , 　苏尚国 , 　罗照华 , 　赵海玲 , 　赵志丹 , 1 1 喻学惠 , 　刘 　翠 1 中国地质大学 地球科学与资源学院 ,北京 100083 2U niver sit y of Illinoi s , Chicago , IL 606077059 , U SA D EN G J inf u 1 , 　MO Xuanxue1 , 　M FJ FL OW ER2 , 　SU Shan gguo 1 , 　L U O Zhaohua1 , 　 Z HA O Hailin g1 , 　ZHA O Zhidan 1 , 　YU Xuehui1 , 　L IU Cui1 1 S chool of Eart h S cience an d M i neral R es ou rces , Chi na Uni vers ity of Geosciences , B eij i ng 100083 , Chi na 2 Uni vers ity of I l l i nois of Chicag o , IL 60607 7059 , US A D ENG Jinf u , MO Xuanxue , FLOWER M F J , et al Cretaceous Large Igneous Provinces and mantle convection Ea r t h Science F r ont ier s ,2005 , 12( 2) :217221 Abstract : In t he Cret aceou s t here were a series of global cat a st rop hic geolo gical event s , including an increa se in t he rat e of oceanic cru st formation , t he long Cret aceou s int erval of normal magnetic polarit y ( sup er chron) , wit h duration of 4 1 Ma f rom 124 Ma to 83 Ma , a significant increa se of seawat er t emp erat ure and t he depo si tion of black shales. These event s were accomp anied by oil generation , changes of eu st atic sea level , increased CO2 level s in t he at mo sp here , and biot a extinction . In t he Mesozoic and Cenozoic L ar ge Igneou