Earth, Atmosphere & Environment Sciences
Title : | Petrogenesis of carbonatites and associated silicate rocks from Gundlupet area, Western Dharwar Craton, Southern India: Tectonomagmatic implications |
Area of research : | Earth, Atmosphere & Environment Sciences |
Principal Investigator : | Dr. Rohit Kumar Giri, Indian Institute Of Technology Kanpur (IITK), Uttar Pradesh |
Timeline Start Year : | 2022 |
Timeline End Year : | 2024 |
Contact info : | rohitgiri.bhu@gmail.com |
Details
Executive Summary : | Carbonatites are exotic igneous rocks with over 50% primary carbonate minerals and are associated with various tectonic regimes. They occur in intrusive, effusive, or pyroclastic forms and are often found in carbonatite-alkaline complexes. However, the exact genetic relationship between carbonatites and silicates and their origin from a common parental magma is debatable. Numerous models on the genesis of carbonatites have been proposed, including products of liquid immiscibility or fractional crystallization of carbonated silicate magmas, low degree partial melting products of carbonated peridotite, and/or products of an enriched mantle. This project aims to study the origin of carbonatites and associated silicate rocks from the Gundlupet area in Chamarajnagar, Karnataka, located at the cratonic margin of the western Dharwar craton (WDC) in southern India. The Gundlupet alkaline complex offers a rare opportunity to explore genetic relationships between carbonatites and silicates, which is the main focus of this project. The objectives of this project include providing petrography, mineralogical, bulk rock geochemical, stable and radiogenic isotope compositions, and geochronological accounts of the Gundlupet alkaline complex. These will be used to establish source mantle characteristics, mode of emplacement, timing of emplacement, genetic relationship, petrogenesis, and magma chamber dynamics. The major goal is to build a model that can describe the origin of the complex, which can be extended to other similar complexes worldwide. |
Organizations involved