Results 21 to 30 of about 8,887 (226)

A Thermo‐Compositional Model of the African Cratonic Lithosphere

Geochemistry, Geophysics, Geosystems, 2022
Recently, the continually increasing availability of seismic data has allowed high‐resolution imaging of lithospheric structure beneath the African cratons.
N.‐P. Finger, M. K. Kaban, M. Tesauro, W. D. Mooney, M. Thomas   +4 more
doaj   +1 more source

The Hudson Bay Lithospheric Experiment (HuBLE) : Insights into Precambrian Plate Tectonics and the Development of Mantle Keels [PDF]

, 2015
The UK component of HuBLE was supported by Natural Environment Research Council (NERC) grant NE/F007337/1, with financial and logistical support from the Geological Survey of Canada, Canada–Nunavut Geoscience Office, SEIS-UK (the seismic node of NERC ...
Bastow, I. D., Darbyshire, F. A., Eaton, D. W., Helffrich, G., Kendall, J.-M., Pawlak, A. E., Snyder, D. B., Thompson, D. A., Wookey, J.   +8 more
core   +2 more sources

Kyanite-bearing eclogite xenoliths from the Udachnaya kimberlite, Siberian craton, Russia [PDF]

BSGF - Earth Sciences Bulletin, 2017
Xenoliths brought up by kimberlite magmas are rare samples of otherwise inaccessible lithospheric mantle. Eclogite xenoliths are found in most cratons and commonly show a range of mineral and chemical compositions that can be used to better understand ...
Radu Ioana-Bogdana, Moine Bertrand, Ionov Dmitri, Korsakov Andrey, Golovin Alexander, Mikhailenko Denis, Cottin Jean-Yves   +6 more
doaj   +1 more source

Sr-Nd isotope geochemistry of the early Precambrian sub-alkaline mafic igneous rocks from the southern Bastar craton, Central India [PDF]

, 2009
Sr–Nd isotope data are reported for the early Precambrian sub-alkaline mafic igneous rocks of the southern Bastar craton, central India. These mafic rocks are mostly dykes but there are a few volcanic exposures.
BL Weaver, DA Papanastassiou, DJ DePaolo, F Kalsbeek, G Sarkar, Gulab C. Gautam, H Crookshank, HC Halls, J Blichert-Toft, JE French, JE French, JJW Rogers, JJW Rogers, M Anand, M Ramakrishnan, NM Evensen, Rajesh K. Srivastava, RCO Gill, RE Ernst, RE Ernst, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RK Srivastava, RL Rudnick, Rob M. Ellam, RP Hall, RW Maitre Le, SA Drury, SL Goldstein, SM Naqvi, SR Taylor, TE Krough, TN Irvine, V Rajamani   +39 more
core   +1 more source

Deep continental roots and cratons [PDF]

Nature, 2021
The formation and preservation of cratons-the oldest parts of the continents, comprising over 60 per cent of the continental landmass-remains an enduring problem. Key to craton development is how and when the thick strong mantle roots that underlie these regions formed and evolved.
D. Graham Pearson, James M. Scott, Jingao Liu, Andrew Schaeffer, Lawrence Hongliang Wang, Jeroen van Hunen, Kristoffer Szilas, Thomas Chacko, Peter B. Kelemen   +8 more
openaire   +5 more sources

Crustal rejuvenation stabilised Earth’s first cratons

Nature Communications, 2021
Why Earth’s crust only started becoming widely preserved in the Eoarchaean, 500 Ma after planetary accretion, is poorly understood. Here, the authors document a shift to juvenile magmatic sources in the early Eoarchaean, linking crustal preservation to ...
Jacob A. Mulder, Oliver Nebel, Nicholas J. Gardiner, Peter A. Cawood, Ashlea N. Wainwright, Timothy J. Ivanic   +5 more
doaj   +1 more source

Seismic anisotropy of Precambrian lithosphere : Insights from Rayleigh wave tomography of the eastern Superior Craton [PDF]

, 2017
The seismic data used in this study are freely available from the CNDC (Canadian National Data Centre for Earthquake Seismology and Nuclear Explosion Monitoring) and IRIS DMC (Data Management Center) via their data request tools.
Lee S., Nolet G., Sato Y., Snieder R., Vinnik L., Wardle R. J.   +5 more
core   +2 more sources

From source to sink in central Gondwana: Exhumation of the Precambrian basement rocks of Tanzania and sediment accumulation in the adjacent Congo basin [PDF]

, 2016
Apatite fission track (AFT) and (U-Th)/He (AHe) thermochronometry data are reported and used to unravel the exhumation history of crystalline basement rocks from the elevated (>1000 m above sea level) but low-relief Tanzanian Craton.
Brown, Roderick, de Wit, Maarten J., Kasanzu, Charles Happe, Linol, Bastien, Persano, Cristina, Stuart, Finlay M.   +5 more
core   +1 more source

A Thermo‐Compositional Model of the Cratonic Lithosphere of South America

Geochemistry, Geophysics, Geosystems, 2021
New seismic data on the crust and upper mantle of South America have recently become available and describe its deep structure with unprecedented resolution.
N.‐P. Finger, M. K. Kaban, M. Tesauro, C. Haeger, W. D. Mooney, M. Thomas   +5 more
doaj   +1 more source

Regional gravity field distribution over cratonic domains of the Indian shield: Implications for lithospheric evolution and destruction

Geosystems and Geoenvironment, 2022
The nature of crust and lithospheric mantle evolution of the Archean shields and their subsequent destruction through intraplate tectonic processes are important in understanding continental dynamics and resources.
A. Vasanthi, M. Santosh
doaj   +1 more source