Abstract

Numerous monogenic volcanic structures and thermal water outlets in the Malko-Petropavlovsk zone of transverse dislocations (MPZ) on the Kamchatka Peninsula have been established to be localized in areas of increased fracturing in the upper part of the earth’s crust. In the paper, we characterize at a quantitative level the association of manifestations of volcanism and hydrothermal–magmatic systems with positive anomalies in the morphometric characteristics of the relief (specific length of “weak” zones and watercourses, density of intersections of rivers and lineaments, and dispersion of slope exposure). A high degree of consistency in the orientations of faults and weak zones are revealed: both rose diagrams show northwestern, meridional, and northeastern directions, while the average circular values of their strikes are 75° and 76°, respectively. According to the Nechaev method (Institute of Physics of the Earth, Russian Academy of Sciences (IPE RAS)), 3D models of tectonic fragmentation of the earth’s crust in the depth range of 2.5–10 km are obtained based on the calculation of the specific lengths of weak zones and watercourses. The Pearson correlation coefficient between the point elements of these voxel models is 0.86. Based on the relation between morphometric characteristics and manifestations of volcanism, we suggest that, in general, the nature of the fracturing reflected in the relief is one of the main factors determining the hydrothermal–magmatic activity of the studied area, which has a great effect on human economic activity.

中文翻译：

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马尔科-彼得罗巴甫洛夫斯克地区岩石圈上部破裂的地貌形态参数与火山活动的关系

摘要

堪察加半岛马尔科-彼得罗巴甫洛夫斯克横向位错带（MPZ）中的许多单源火山结构和热水出口已确定位于地壳上部破裂增加的区域。在本文中，我们定量地描述了火山活动和热液-岩浆系统的表现与地貌形态特征中正异常的关联（“弱”区和水道的具体长度、河流和地貌交汇处的密度、和坡度暴露的分散）。断层和薄弱带的走向高度一致：两个玫瑰图均显示西北、经向和东北向，而其走向的平均圆度值分别为75°和76°。根据Nechaev方法（俄罗斯科学院地球物理研究所（IPE RAS）），根据具体计算得到2.5~10 km深度范围内的地壳构造破碎3D模型。薄弱区和水道的长度。这些体素模型的点元素之间的 Pearson 相关系数为 0.86。根据形态特征与火山活动表现的关系，我们认为，总体上，地貌所反映的断裂性质是决定研究区热液-岩浆活动的主要因素之一，对研究区的热液-岩浆活动有很大的影响。关于人类经济活动。