Geological Structure and Aeromagnetic and Gravity Anomalies in the Central Part of the Chitaldrug Schist Belt, Mysore, India

Research Article| May 01, 1973 Geological Structure and Aeromagnetic and Gravity Anomalies in the Central Part of the Chitaldrug Schist Belt, Mysore, India S. M. NAQVI S. M. NAQVI 1National Geophysical Research Institute, Hyderabad-7, India Search for other works by this author on: GSW Google Scholar Author and Article Information S. M. NAQVI 1National Geophysical Research Institute, Hyderabad-7, India Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1973) 84 (5): 1721–1732. https://doi.org/10.1130/0016-7606(1973)84<1721:GSAAAG>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation S. M. NAQVI; Geological Structure and Aeromagnetic and Gravity Anomalies in the Central Part of the Chitaldrug Schist Belt, Mysore, India. GSA Bulletin 1973;; 84 (5): 1721–1732. doi: https://doi.org/10.1130/0016-7606(1973)84<1721:GSAAAG>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Two generations of folds are recognized in the central part of the Chitaldrug schist belt through geologic mapping and structural analysis. While a total intensity aeromagnetic map does not reflect the lithology and structure, gravity anomalies clearly delineate the subsurface geology. The intense anomaly zone may be caused by the combined effect of mafic dikes, ferruginous quartzites, and traps. The synclinal parts are reflected by gravity anomalies higher than those over the anticlinal parts. Analysis of the Bouguer anomalies shows that the thickness of the basic volcanic suite varies from 0.8 to 2.5 km, and that the depth of the Chitaldrug granite is about 7.2 km. Negative gravity anomalies over the schists denser than the granite suggest a granitic-gneissic basement below the thin layer of schists. The study suggests that the average density of the upper part of the crust in this area has been reduced due to granitic emplacement. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.