Solid Earth Sciences (S) | ||
---|---|---|
Session Sub-category | Mineralogy & Petrology(MP) | |
Session ID | S-MP27 | |
Title | Evolution of the early continents and the oceans understood by multi-geological proxies | |
Short Title | Unravelling Earth's ancient reservoirs | |
Main Convener | Name | Arathy Ravindran |
Affiliation | University of Cologne | |
Co-Convener 1 | Name | M.P. Manu Prasanth |
Affiliation | Institute of Earth Sciences, Academia Sinica, Taiwan | |
Co-Convener 2 | Name | Bivin Geo George |
Affiliation | Indian Institute of Technology Bombay, Mumbai, India | |
Co-Convener 3 | Name | Madhusoodhan Satish-Kumar |
Affiliation | Department of Geology, Faculty of Science, Niigata University | |
Session Language |
E |
|
Scope |
Archean cratonic shields, associated with vast granite-greenstone assemblages, represent the oldest nuclei of Earth's continental lithosphere. These are surrounded and overlain by coeval and younger sedimentary rocks that can give key insights into the early oxygenation events, evolution of the continental crust, the seawater composition and the earliest life on Earth. The formation, stabilization and the subsequent growth of cratons around the world and their emergence above sea level have often been intertwined with knowing the chemical composition of seawater in the Precambrian. However, this record remains incomplete due to the lack of global datasets, limited exposure of Archean and early Proterozoic rocks, and late-emplacement events such as metamorphism. For a better understanding of the early evolution of the planet, multi-disciplinary approaches involving isotope and elemental geochemistry, geochronology, biogeochemistry, petrology, and geodynamic modelling of different ancient regions on the Earth is required. We welcome contributions from any of these disciplines that utilize traditional or novel approaches to advance our knowledge on early differentiation and secular evolution of Earth's crust, mantle and oceans, existent tectonic regimes and the deposition of sedimentary units that facilitated oxygenation and life, thereby gaining meaningful information on the formation of the early lithosphere, atmosphere, hydrosphere, and biosphere on Earth. |
|
Presentation Format | Oral and Poster presentation | |
Invited Authors |
Indrani Mukherjee (University of New South Wales) Ikshu Gautam (Institute of Science Tokyo) |
Presentation No | Title | Presenter |
---|---|---|
Poster Presentation May 27 PM3 | ||
SMP27-P01 | Proterozoic oceans: A glimpse into past life and world class Zn-Pb sediment hosted deposits | Indrani Mukherjee |
SMP27-P02 | Sulfur and iron isotope study of metacarbonate rocks from the Highland Complex, Sri Lanka | Madhusoodhan Satish-Kumar |
SMP27-P03 | Complementary Hadean reservoirs preserved in felsic and sedimentary rocks from the Dharwar Craton, India | Arathy Ravindran |
SMP27-P04 | Microbial TiO 2 segregation for UV protection: Evidence from 2.72 Ga stromatolite | Kiran Sasidharan |
SMP27-P05 | Mo isotopes as a proxy for understanding the later accretion of Earth? A case study of Acasta Complex | Ikshu Gautam |
SMP27-P06 | Carbon and Strontium Isotope Stratigraphy in Proterozoic Sedimentary Sequences of India | Bivin Geo George |
SMP27-P07 | Precambrian mantle dynamics of the Western Dharwar Craton, India: Comprehensive petrogeochemical, multi-isotope, and paleomagnetic evidence from mafic dyke swarms. | Ammini Sasidharan Silpa |
SMP27-P08 | Characterizing deposition and diagenesis history of post-Marinoan Snowball Earth carbonates from sedimentary pyrites | Yung-Hsin Liu |