| 陕西山阳盆地白垩系—第三系界限地层地球化学特征及古气候意义 |
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| 引用本文： | 陈丹玲,薛祥煦,等.陕西山阳盆地白垩系—第三系界限地层地球化学特征及古气候意义[J].西北大学学报,2001,31(2):157-161. |
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| 作者姓名： | 陈丹玲 薛祥煦 |
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| 作者单位： | [1]西北大学新生代环境与地质研究所，陕西西安710069 [2]西北大学新生代环境与地质研究所， |
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| 摘 要： | 通过对陕西山阳盆地上白垩统-古新统界限地层——山阳组和鹃岭组地层学、元素地球化学及地层中化石特征的研究表明：山阳盆地的上白垩统和古新统构成完整的沉积旋回；古气候以干热为主，且在晚白垩世晚期干热程度尤为严重，这种干热的气候很可能对恐龙在白垩纪末的绝灭起到了推波助澜的作用。
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| 关 键 词： | 白垩系－第三系界限 地球化学特征 古气候 陕西山阳盆地 岩石地层 生物地层 磁性地层 |
| 文章编号： | 1000-274Ⅹ(2001)02-0157-05 |
| 修稿时间： | 2000年4月21日 |
The geochemical features of the Cretaceous Tertiary strata in Shanyang basin, Shaanxi province |
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| CHEN Dan ling,XUE Xiang xu,ZHANG Yun xiang,YUE Le ping.The geochemical features of the Cretaceous Tertiary strata in Shanyang basin, Shaanxi province[J].Journal of Northwest University(Natural Science Edition),2001,31(2):157-161. |
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| Authors: | CHEN Dan ling XUE Xiang xu ZHANG Yun xiang YUE Le ping |
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| Abstract: | Based on the analyses of major and minor elements, REE and the features of fossils found in the Shanyang formation and Juanling formation, which formed the K/T boundary strata of the Shanyang basin, indicate that the Shangyang formation and Juanling formation formed a continual sedimentary cycle. The climate conditions during these periods was relatively hot and dry, and this situation was getting intensive during the Latest Cretaceous, which may be the important reason of the dinosaurian extinction in the Latest Cretaceous. |
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| Keywords: | K/T boundary geochemistry paleoclimate Shanyang county Shaanxi province |
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