Results 71 to 80 of about 8,887 (226)
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
"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 +9 more
doaj +1 more source
Metastable Nanosized Diamond Formation from Fluid Systems [PDF]
, 2010 The model of nanosized diamond particles formation at metastable P-T parameters from fluid is presented. It explains the specific of CVD diamond synthesis gases mixtures and hydrothermal growth of diamond at low P-T parameters as well as it explains the ...
Sergei Simakov
core +2 more sources
ASEG Extended Abstracts, 2004 The 2003 Gawler Seismic Survey acquired 250 km of 60-fold, deep seismic reflection data along two intersecting lines in order to investigate the crustal structure of the eastern Gawler Craton, South Australia. Seismic reflection data processing has produced images of the crust down to the Moho, through the overlying Neoproterozoic successions, the ...
L.E.A. Jones +11 more
openaire +1 more source
How Cratonic Roots Survive With Weak Mid‐Lithosphere Discontinuities
Geophysical Research LettersThe 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
Neoproterozoic crustal evolution in Southern Chad: Pan-African ocean basin closing, arc accretion and late- to post-orogenic granitic intrusion. [PDF]
, 2006 International audienceIn the Lake Léré region, southern Chad, Neoproterozoic terrains are distributed in four lithostructural groups that reveal the geotectonic evolution of a part of the Pan-African orogenic domain.
Doumnang, J.C. +4 more
core +3 more sources
Effort was concentrated in problems of continental evolution and a presentation was made to a workshop on the Deep Continental Growth of South India. An interpretation of the lithospheric structure of Africa as related to continental collision (together ...
Burke, Kevin
core +1 more source
Subparallel thrust and normal faulting in Albania and the roles of gravitational potential energy and rheology contrasts in mountain belts [PDF]
, 2009 The active tectonics of Albania and surrounding regions, on the eastern margin of the Adriatic Sea, is characterized by subparallel thrust and normal faulting which, we suggest, is likely to be related to gravitational potential energy contrasts between ...
Boait, Fran +4 more
core +1 more source
CO-EVOLUTION OF PROTEROZOIC CRATONIC FRAGMENTS IN WESTERN AND NORTHERN MONGOLIA
Геодинамика и тектонофизика, 2017 CAOB occupies a vast area that extends from the Urals to the Far East Asia and from the Siberian craton to the North China and Tarim cratons (Fig. 1, A).
Uyanga Bold +2 more
doaj +1 more source