Levé géophysique aéroporté dans le Sud-Est du Massif armoricain (programme GéoFrance3D Armor2). Magnétisme et radiométrie spectrale

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science Pub Date : 2001-09-15 DOI:10.1016/S1251-8050(01)01642-1

Catherine Truffert , Charles Gumiaux , Jean Chantraine , José Perrin , Armand Galdeano , Denis Gapais , Michel Ballèvre , Fouzia Asfirane , Pol Guennoc , Jean-Pierre Brun

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引用次数: 12

Abstract

A detailed geophysical survey has been carried out in the Armorican massif. Magnetic and radiometric data have been simultaneously recorded. The studied area offers a short cross-section through the major domains of the Variscan collision belt. Geophysical maps have been correlated with a regional geological map drawn within the framework of the project (Armor2, GéoFrance 3D). Geological contours could be revisited and continuity of some structural features are evident. Radiometric maps allowed identifying the geochemical content of K, U and Th within volcano-sedimentary units. Magnetic geological formations are followed beneath the Neogene sedimentary cover and offshore.

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Armorican地块东南部的航空地球物理调查（Géofrance3D Armor2计划）。磁学和光谱辐射测量

对Armorican地块进行了详细的地球物理调查。同时记录了磁性和放射性数据。研究区域提供了穿过华力西碰撞带主要区域的短横截面。地球物理图已与项目框架内绘制的区域地质图（Armor2，GéoFrance 3D）进行了关联。可以重新绘制地质等值线，并且某些结构特征的连续性是明显的。放射性图可以识别火山沉积单元中K、U和Th的地球化学含量。磁性地质构造在新近系沉积盖层下方和近海。

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Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science

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