Decoding Subsurface Secondary Mineralisation and its Impact on Cohesive Strength:An Outcome of the Deep Scientific Drilling Program in the Koyna-Warna Seismogenic Region,Western India

作     者：Halder PIYAL Sharma ANUPAM Kumar Shukla MATSYENDRA Kumar KAMLESH Halder PIYAL;Sharma ANUPAM;Kumar Shukla MATSYENDRA;Kumar KAMLESH

作者机构：Birbal Sahni Institute of Palaeosciences(DSTGovt.of India)LucknowU.P.India Academy of Scientific and Innovative Research(AcSIR)Ghaziabad-201002India Government of IndiaMinistry of Earth SciencesBorehole Geophysics Research LaboratoryKaradMaharashtraIndia 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2024年第98卷第S01期

页      面：44-50页

核心收录：

学科分类：070801[理学-固体地球物理学] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 0708[理学-地球物理学] 

基　　金：the Ministry of Earth Sciences Govt of India for the financial support[MoES/P.O.(Seismo)/1(374)/2019]and Dr.Sukanta Roy Project Director MoES-BGRL Karad for providing samples 

主　　题：fluid-rock interaction faults chlorite hydrothermal alteration recurring seismicity 

摘      要：The Koyna-Warna seismogenic region overlying the Deccan volcanic province of Western India has been experiencing the recurrence of earthquakes since 1967 soon after the impoundment of the Koyna Dam.A large number of small to medium-magnitude shallow focus earthquakes(100,000)have been detected in this intraplate region during the last six *** the present study,the core samples recovered from the borehole‘KBH3’drilled upto 1134 m depth in the pre-Deccan granitoids basement rocks of this region have been subjected to mineralogical and geochemical studies.