Results 71 to 80 of about 35,079 (237)

Constructing a Craton [PDF]

Science, 2010
Geophysics![Figure][1] CREDIT: USGS The cores of continents, or cratons, make up the stable lithosphere. Their formation probably occurred billions of years ago, though the mechanisms responsible remain unclear. One way to seek further insight is to look below the present-day continents for clues, such as where the lithosphere ends and the ...
openaire   +1 more source

Crustal evolution, intra-cratonic architecture and the metallogeny of an Archaean craton

Geological Society, London, Special Publications, 2013
Abstract The generation of the Earth's continental crust modified the composition of the mantle and provided a stable, buoyant reservoir capable of capturing mantle material and ultimately preserving ore deposits. Within the continental crust, lithospheric architecture and associated cratonic margins are a first-order control on camp-scale ...
Mole, David, Fiorentini, M., Cassidy, K., Kirkland, Chris, Thebaud, N., Mccuaig, T., Doublier, M., Duuring, P., Romano, S., Maas, R., Belousova, E., Barnes, S., Miller, J.   +12 more
openaire   +2 more sources

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

The Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source

"Clifford's Rule" and the geodynamics of kimberlite magmatism

Геофизический журнал, 2013
The Clifford rule emphasizes the association of kimberlite magmatism with the crust areas of Archean and Early Proterozoic age. Though there are diamantiferous and highly productive primary diamond deposits outside Archean cratons, the Clifford rule is ...
O. V. Aryasova, Ya. M. Khazan
doaj   +1 more source

Molecular hydrogen in minerals as a clue to interpret ∂D variations in the mantle

Nature Communications, 2020
Trace amounts of water dissolved in minerals play an important role in global tectonics through changing the density, viscosity and melting behaviour of the Earth’s mantle.
B. N. Moine, N. Bolfan-Casanova, I. B. Radu, D. A. Ionov, G. Costin, A. V. Korsakov, A. V. Golovin, O. B. Oleinikov, E. Deloule, J. Y. Cottin   +9 more
doaj   +1 more source

Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner, Robert Schöner, Reinhard Gaupp, Andreas Kronz, Benjamin Bomfleur, Joerg W. Schneider, Lothar G. Viereck   +6 more
wiley   +1 more source

Numerical modelling of Venus’mantle: the role of cratons in lithospheric overturns [PDF]

, 2019
Despite its similarities in bulk properties to Earth, Venus portrays a fundamentally different mode of surface tectonics. Venus is currently known to be operating in stagnant lid mode of mantle convection.
Karlsson, Rebecca Vilde Martine Krohn
core  

Seismic structure of the crust and uppermost mantle of the Capricorn and Paterson Orogens and adjacent cratons, Western Australia, from passive seismic transects [PDF]

, 2012
The seismic structure of the Proterozoic Capricorn and Paterson Orogens and adjacent Archaean Yilgarn and Pilbara Cratons, Western Australia, is determined using a passive seismic approach.
Stephen Sheppard, Tkalcic, H., Sheppard, Stephen, Simon P. Johnson, Anya M. Reading, Hrvoje Tkalčić, Kennett, B., Reading, A., Brian L.N. Kennett, Johnson, S.   +9 more
core   +3 more sources

How Cratonic Roots Survive With Weak Mid‐Lithosphere Discontinuities

Geophysical Research Letters
The stability of cratons has long been attributed to their neutral buoyancy and strong roots. However, recent seismic studies have revealed widespread mid‐lithospheric discontinuities (MLDs) within cratonic roots.
Qionghua Guo, Huilin Wang, Honglei Liu
doaj   +1 more source

Tracing Continental Basalt Sources and Mantle Processes Using Fe Stable Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Iron (Fe) isotopes have emerged as powerful tracers of mantle source heterogeneity and melting processes, yet the mechanisms producing heavy Fe isotope signatures (high δ57Fe values) in intraplate basalts remain debated. Competing interpretations include partial melting of recycled pyroxenite domains versus carbonate‐induced oxidation of a ...
Yi‐Shan Cheng, Jian‐Qiang Liu, Li‐Hui Chen, Xun Yu, Gang Zeng, Xiao‐Jun Wang, Zhao‐Yang He, Jian Zhao, Frances M. Deegan, Valentin R. Troll, Hong‐Fu Zhang   +10 more
wiley   +1 more source