柴达木盆地第四纪古气候变化在物理测井自然伽玛曲线上的记录

doi:10.7605/gdlxb.2001.02.004

古地理学报 ›› 2001, Vol. 3 ›› Issue (2): 29-37. doi: 10.7605/gdlxb.2001.02.004

• 第四纪古地理学及沉积学 • 上一篇下一篇

柴达木盆地第四纪古气候变化在物理测井自然伽玛曲线上的记录

陈晔袁林旺周春林刘泽纯

南京师范大学地理科学学院海岸与第四纪研究所，南京，210097

出版日期:2001-04-01 发布日期:2001-04-01
作者简介:陈晔，男，1968年生，博士，主要从事第四纪沉积与环境变迁方面的研究。

Quaternary Palaeoclimatic Changes Recorded by Natural Gamma Logging Curve in Qaidam Basin

Chen Ye Yuan Linwang Zhou Chunlin Liu zechun

Coastal and Quaternary Institute of Geo-Science School, Nanjing Normal University, 210097

Online:2001-04-01 Published:2001-04-01
About author:Chen Ye, born in 1968, Ph.D., is engaged in research on the Quaternary sediments and environmental changes.

摘要/Abstract

摘要：

利用物理测井曲线分析古气候变化，是近年发展起来的新领域。本文在对取芯井涩中6井多种气候指标分析的基础上，建立了涩中6井GR曲线古气候反演模式，将该模式引进到盆地东部唯一贯穿第四纪的钻孔---达参1井，利用该井高分辨率自然伽玛曲线建立了盆地东部地区2.85Ma以来的时间标尺，据此讨论盆地东部地区2.85Ma以来的古气候变化，表明盆地气候变化在大阶段上明显受到天文轨道周期的控制，但也具有明显的区域性特征。此外还与盆地西部大浪滩ZK-336孔进行了对比。表明柴达木盆地同时包含了高原隆升与全球性气候变化的信息，是古环境变迁的良好的信息载体。也证明了自然伽玛曲线是反映内陆干旱盆地气候与环境变化良好的代用指标。

Abstract:

Using natural gamma logging curve to analysis palaeoclimatic change is the newly developed research field. Based on the analyses of a variety of palaeoclimatic indicators from the core samples of the Sezhong 6 well, we have established the model of inverse modeling of palaeoclimatic changes. This model has been further introduced into the Dacan 1 well — the only well drilling through the Quaternary in the eastern Qaidam Basin. The high-resolution natural gamma logging curve of the Dacan 1 well have been used to reconstruct the time scale of a period of 2.85Ma B.P. in the eastern Qaidam Basin. The palaeoclimatic changes in the eastern Qaidam Basin since 2.85Ma B.P. have also been discussed. In comparison with the record of ZK-336 well in the Dalangtan area of the western Qaidam Basin, it is suggested that the palaeoclimatic changes of the Qaidam Basin were controlled by the astronomic orbital periods, and these changes tend to behave obvious regional characteristics. It is shown that the current Qaidam basin is one of the best carriers of information such as the uplifting history of the Qinghai and Tibet plateau, the global climatic changes, and the global environmental changes. It is also indicated that the natural gamma-logging curve can be a good indicator of the environmental and climatic changes of the inland arid basin.

陈晔袁林旺周春林刘泽纯. 柴达木盆地第四纪古气候变化在物理测井自然伽玛曲线上的记录[J]. 古地理学报, 2001, 3(2): 29-37.

Chen Ye Yuan Linwang Zhou Chunlin Liu zechun. Quaternary Palaeoclimatic Changes Recorded by Natural Gamma Logging Curve in Qaidam Basin[J]. JOURNAL OF PALAEOGEOGRAPHY, 2001, 3(2): 29-37.

http://www.gdlxb.cn/CN/Y2001/V3/I2/29

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