白垩纪正常超同步末期地磁场行为的异常特征：克里米亚西南部图伦纪-桑顿纪研究的启示

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Izvestiya, Physics of the Solid Earth Pub Date : 2024-07-03 DOI:10.1134/S1069351324700150

A. Yu. Guzhikov, E. Yu. Baraboshkin, I. P. Ryabov, M. A. Ustinova, V. S. Vishnevskaya

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引用次数: 0

摘要

摘要在克里米亚西南部四个都龙纪-山童纪地段的 266 个地层的 394 个样本中，确定了在成岩阶段获得的特征性剩磁分量（ChRM）。所获得的数据固定了约 5-6 Myr 期间形成的沉积物中高振幅古地球磁场变化的记录（均方根偏差 S = 25.9°，固定截角为 45°，约为该纬度模型 S 的两倍），并被解释为图伦纪、科尼亚纪和山顿纪地磁场的异常行为。

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Anomalous Features in the Behavior of the Geomagnetic Field at the End of the Cretaceous Normal Superchron: Insights from the Study of the Turonian–Santonian in the Southwestern Crimea

Abstract—In 394 samples characterizing 266 stratigraphic levels in four Turonian–Santonian sections of the Southwestern Crimea, characteristic remanent magnetization components (ChRM) acquired at the stage of diagenesis are identified. The obtained data fix the record of the paleosecular geomagnetic variation of high amplitude (root mean square deviation S = 25.9° with a fixed cut-off angle of 45°, which is about twice as high as the model S for this latitude) in the sediments formed during ~5–6 Myr and is interpreted as anomalous behavior of the geomagnetic field in the Turonian, Coniacian, and Santonian.

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来源期刊

Izvestiya, Physics of the Solid Earth 地学-地球化学与地球物理

CiteScore

1.60

自引率

30.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.