临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义

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临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义

文章导航 > 沉积学报 > 2010 > 28(6): 1190-1197

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

引用本文:

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

Citation:

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

引用本文:

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

Citation:

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义

闫晓丽

兰州大学资源环境学院西部环境教育部重点实验室兰州 730000

通讯作者:
闫晓丽

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Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications

YAN Xiaoli

Key Laboratory of Western China's Environmental Systems, Ministry of Education of China & College of Resources and Environment, Lanzhou University, Lanzhou 730000;

More Information

Corresponding author: YAN Xiaoli

摘要: 通过对临夏盆地黑林顶剖面晚新生代沉积物的岩石磁学研究, 揭示在11.8~8.6 Ma 磁化率波动较小, 基本保持相对稳定的低值(0.58~6.9/10-8 m3kg-1); 从8.6 Ma 开始受软磁性矿物控制明显持续增加(0.75~10.6/10-8 m3kg-1)。通过沉积物磁学性质与环境变化之间的模式分析, 结合盆地周围构造条件研究, 认为物源的变化可能是造成黑林顶剖面磁化率增强的主要原因。
- 临夏盆地 /
- 磁化率 /
- 物源 /
- 构造运动 /
- 晚新生代
Abstract: The Linxia Basin is a key place to study the paleoclimate change and the Tibetan Plateau uplift for its special place at the Asian monsoon margin and the northeastern Tibetan Plateau. Variations of the magnetic susceptibility and rockmagnetic characteristics from the Heilinding sediments in the Linxia Basin revealed a huge change occurred at the about 8.6 Ma based on a ideal palaeomagnetic dating (11.85.0 Ma). During 11.88.6 Ma, the value of the magnetic susceptibility was stably low (0.586.9/10 8m3kg1). After 8.6 Ma, it became very high(0.7510.6/108m3kg1) for the soft mineral magnetic properties. We argued such change was mainly caused by the change of the material origin driven by the uplift of the Tibetan Plateau. The magnetic susceptibility in the lake sediments is different from the loesspaleosol layers in the explanation of the environment and climate change.
- magnetic susceptibility /
- origin /
- uplift /
- Late Cenozoic /

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文章访问数: 2239
HTML全文浏览量: 7
PDF下载量: 976
被引次数: 0

临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义

闫晓丽

兰州大学资源环境学院西部环境教育部重点实验室兰州 730000

通讯作者: 闫晓丽

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2010-12-10

关键词:

晚新生代

摘要: 通过对临夏盆地黑林顶剖面晚新生代沉积物的岩石磁学研究, 揭示在11.8~8.6 Ma 磁化率波动较小, 基本保持相对稳定的低值(0.58~6.9/10-8 m3kg-1); 从8.6 Ma 开始受软磁性矿物控制明显持续增加(0.75~10.6/10-8 m3kg-1)。通过沉积物磁学性质与环境变化之间的模式分析, 结合盆地周围构造条件研究, 认为物源的变化可能是造成黑林顶剖面磁化率增强的主要原因。

English Abstract

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

引用本文:

闫晓丽. 临夏盆地黑林顶剖面沉积物在8.6Ma前后岩石磁学特征及其意义[J]. 沉积学报, 2010, 28(6): 1190-1197.

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

Citation:

YAN Xiaoli. Rockmagnetic Characteristics of the Sediments from Heilinding Section in the Linxia Basin at 8.6 Ma and Their Implications[J]. Acta Sedimentologica Sinica, 2010, 28(6): 1190-1197.

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