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首页> 外文期刊>Geodinamica Acta >A geophysical approach to the igneous rocks in the Biga Peninsula (NW Turkey) based on airborne magnetic anomalies: geological implications
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A geophysical approach to the igneous rocks in the Biga Peninsula (NW Turkey) based on airborne magnetic anomalies: geological implications

机译：基于机载磁异常的比加半岛（土耳其西北部）火成岩的地球物理方法：地质意义

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摘要

The Biga Peninsula, the complex geological structure of which has attracted intense attention so far, is located in the north-western part of Anatolia, Turkey. The Peninsula is tectonically very important region where different tectonic zones meet and comprises various kinds of sedimentary, metamorphic and igneous rocks. Among these rocks, igneous rocks occupy a considerably amount of areas in the Biga Peninsula and they are mostly associated with geothermal systems and mineral deposits, and therefore they play an important role in the geology of the Peninsula. In this paper, derived results concerning the geological features and subsurface structures of the igneous rocks in the Peninsula are presented based on analyzing the airborne magnetic anomalies. To this end, a MATLAB-based toolkit named as Gravity and Magnetic Interpretation (GMINTERP) that is composed of a set of linked functions in conjunction with a graphical user interface was developed and used for the interpretation of the airborne magnetic anomalies. Some linear transformations and derivative-based techniques were performed to process the potential field data-set and also to help build a general understanding of the geological details. The close agreement between the derived geophysical anomaly maps and the well-known surface geology map of the Biga Peninsula helped us discuss the geological implications of the geophysical traces. This study also indicated that the developed interactive data processing toolkit may assist geological interpretation even in the areas whose subsurface structure is poorly known.
机译：迄今为止，其复杂的地质结构引起人们关注的Biga半岛位于土耳其安纳托利亚的西北部。半岛是构造上非常重要的区域，不同的构造带相遇，并且包括各种沉积，变质和火成岩。在这些岩石中，火成岩占据了Biga半岛相当大的面积，并且大多与地热系统和矿藏有关，因此它们在半岛的地质中起着重要的作用。本文在分析机载磁异常的基础上，给出了有关半岛火成岩地质特征和地下结构的推论结果。为此，开发了一种基于MATLAB的工具箱，称为重力和电磁解释（GMINTERP），该工具箱由一组链接函数以及图形用户界面组成，并用于解释机载磁异常。进行了一些线性变换和基于导数的技术来处理潜在的现场数据集，还有助于建立对地质细节的总体了解。导出的地球物理异常图与著名的Biga半岛地表地质图之间的紧密一致性帮助我们讨论了地球物理痕迹的地质意义。这项研究还表明，即使在地下结构鲜为人知的地区，开发的交互式数据处理工具包也可能有助于地质解释。

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