Mapping of Magmatic Complexes Based on Hydromagnetic Surveys in the Barents Sea Region

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Izvestiya, Physics of the Solid Earth Pub Date : 2023-08-06 DOI:10.1134/S1069351323040079

I. V. Lygin, D. A. Arutyunyan, T. B. Sokolova, K. M. Kuznetsov, K. V. Krivosheya

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Abstract—We have investigated nearly all of the currently available hydromagnetic survey data to study the magmatic structures in the sedimentary basin of the Barents Sea region. We use the modern interpretation techniques to process over 93 000 km profile data of 1995–2017. It was established that north-west striking dyke groups are abundant in the central and northern parts of the basin; in the south part no dykes were found. Magmatic structures in the sedimentary basin are reflected by the local magnetic anomalies of two types—the linear ones sourced by dykes, and mosaic ones associated with the local areas of magmatism. At sea depth of 100–500 m and sediment thickness over 8 km, the dominant depth of the upper edges of the bodies generating anomalies is about 1500 m. The analysis of the magnetic anomalies could help us to outline more exactly the sedimentary structures, the history of the magmatic processes and the tectonic evolution of the Barents Sea Region.

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基于磁测的巴伦支海地区岩浆杂岩填图

摘要/ abstract摘要:为了研究巴伦支海地区沉积盆地的岩浆构造，我们利用了几乎所有现有的水磁学测量资料。我们使用现代解释技术处理了1995-2017年超过93,000公里的剖面数据。确定了盆地中部和北部具有丰富的西北走向岩脉群;在南部没有发现堤坝。沉积盆地的岩浆构造反映在两种局部磁异常上，一种是由岩脉引起的线状磁异常，另一种是与局部岩浆活动有关的马赛克磁异常。在海深100 ~ 500 m，沉积厚度大于8 km的区域，异常体上边缘的优势深度约为1500 m。磁异常的分析有助于我们更准确地勾勒出巴伦支海地区的沉积构造、岩浆过程的历史和构造演化。

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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.