| 下辽河平原第四纪磁性地层的初步探讨 |
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| 引用本文： | 陈德昌,顾尚勇.下辽河平原第四纪磁性地层的初步探讨[J].同济大学学报(自然科学版),1988(2). |
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| 作者姓名： | 陈德昌 顾尚勇 |
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| 作者单位： | 同济大学海洋地质系
(陈德昌)，辽宁省水文地质一大队(顾尚勇) |
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| 摘 要： | 通过对下辽河地区古地磁样品分析。发现缺失松山反向时的磁性地层,即没有早更新世的沉积地层,讨论了此现象和郯庐大断裂的应力场的变化关系。古地磁分析对本区第四纪磁性地层的划分提供了依据。
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| 关 键 词： | 古地磁学 第四纪沉积 地层划分 |
A preliminary Study of the Quaternary Magnetostratigraphy of the Lower Liao River Region |
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| Chen Dechang,.A preliminary Study of the Quaternary Magnetostratigraphy of the Lower Liao River Region[J].Journal of Tongji University(Natural Science),1988(2). |
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| Authors: | Chen Dechang |
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| Abstract: | Paleomagnetic analysis was applied to more than 462 specimens from 2 bore-holes of the Lower Liao River Region. The result shows that in the area studiedthe Brunhes normal chron directly overlies the Gauss normal chron, as correlatedwith the magnetic polarity time scale. The lack of the Matuyama reversed chronindicates that there are no strata deposited during the early Pleistocene. Thishiatus is probably related to the change of the stress field of the northern bra-nch of the great Tanlu fault zone. During the Brunhes normal chron, there alsoexist 4 to 5 polarity subchrons. This paleomagnetic analysis has provided a basisfor the subdivision of the Quaternary magnetostratigraphy of the area studied. |
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| Keywords: | Paleomagnetism Quaternary sediment Stratigraphical division |
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