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