An Experimental Study on Relationship between Compaction and Magnetic Dip Angles
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摘要: 库车坳陷上新统库车组古地磁资料表明,泥岩组样品的平均磁倾角最小,从泥质粉砂岩、砂岩到粉砂岩其平均磁倾角依次递增,相应的古纬度值从泥岩、泥质粉砂岩到粉砂岩依次增高。为了研究这一现象,我们选取了 48个库车组样品作了一系列实验。实验结果表明,压实作用引起的体积变化与磁倾角降低呈线性关系.Abstract: Paleomagnetic data from Ruche Formation(Pliocene)in Kuche Depression indicate that mean dlp angles possess the smallest values in mudstone and progressively increase from muddy siltstone to sandstone and siltstone.The corresponding paleolatitudes bet higher in the same sequences.In order to research this phenomenon we conduct an experiment with 48 specimens and find that decrease in magnetic dip ankle is linearly related to volume variation resulting from compaction.
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Key words:
- Kuche depression /
- Pliocene compaction /
- magnetic dip angle /
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[1] 1 杨庚. 库车坳陷沉降与天山中新生代构造活动[J]. 新疆地质,1995,13(3):21 ~ 25
2 Chen Y,et al. New Cretaceous paleomagnetic poles from the Tarim Basin,NW-China[J]. Earth Plant. Sci. Lett,1992
3 邓云山,康键,孟自芳. 库车坳陷同沉积古地磁研究[J]. 沉积学报,1998,16(4):109 ~ 113
4 柏美祥. 新疆第四系若干问题的初步探讨[A]. 新疆第四纪地质及冰川地质论文集[C].1981
5 H H.Rieke G V. ChiIingarina 著. 徐怀大译. 泥质沉积物的压实[C]. 北京:地质出版社,1984 -

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