Advanced combined geophysical-geological mapping of the Sea of Galilee and its vicinity

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Sea of Galilee (Lake Kinneret) is located in northern Israel in the area of complex tectonic setting where the Dead Sea Transform crosscuts other fault systems. The practical absence of boreholes in the sea hinders geological-geophysical data interpretation. In this study for the first time gravity, magnetic, paleomagnetic, radiometric, and seismological data were analyzed together. An integrated analysis of gravity and seismological data made it possible to clarify some tectonic parameters. Map of the total magnetic field shows an intricate pattern caused by a combined influence of the basalt flows of various ages and magnetization in and around the sea. Calculated statistical-probabilistic parameters of the magnetic field indicate some important peculiarities of the medium. The recognized magnetic anomalies were analyzed using methods of quantitative interpretation specially developed for the complex physical-geological environments. 3D magnetic field modeling allowed to reveal the following important features: thick basaltic plate occurrence in the southernmost sea basin, presence of the reversely magnetized basalts near the sea's eastern boundary, and possible subsidence of basaltic bodies in a center of the pull-apart basin. The paleomagnetic stratigraphy of basalt associations around the Sea of Galilee basin proved to be correlated with the paleomagnetic zones and anomalies in the sea. The paleomagnetic characteristics of traps are linked with the development of the Dead Sea Transform. The previously constructed magnetic-paleomagnetic scheme with the predominantly K-Ar dating has been significantly elaborated on the basis of newly arriving data. It is stated that a characteristic feature of the study area is the turns of tectonic blocks mainly counterclockwise. The revised structural map of the Cover Basalt is intended for the coordination of various geological and environmental investigations in this area.
Original languageEnglish
Title of host publicationInstrumentation and Measurement Technologies for Water Cycle Management
PublisherSpringer, Cham
Chapter16
Pages145-169
Number of pages25
StatePublished - 2022

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