Results 51 to 60 of about 2,719 (188)
Effects of upper mantle heterogeneities on the lithospheric stress field and dynamic topography [PDF]
Solid Earth, 2018 The orientation and tectonic regime of the observed crustal/lithospheric stress field contribute to our knowledge of different deformation processes occurring within the Earth's crust and lithosphere.
A. Osei Tutu +8 more
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The backarc mantle lithosphere in Patagonia, South America
Journal of South American Earth Sciences, 2004 The backarc Patagonia mantle underwent pervasive regional re-crystallisation that left only remnants of the pre-existing mantle. Anhydrous xenoliths (dominantly lherzolites and harzburgites, few dunites) are predominant. Xenoliths containing hydrous phases (lherzolites and harzburgites, rare wehrlites) abundantly occur only at G. Gregores.
RIVALENTI, Giorgio +6 more
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Geochemistry, Geophysics, Geosystems, 2022 To improve the understanding of the formation and evolution of the sub‐continental lithospheric mantle (SCLM) underlying the South Australian Craton we have conducted a detailed petrological study on >3,000 mantle xenocrysts from 13 kimberlites emplaced ...
Z. J. Sudholz +7 more
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Геодинамика и тектонофизика, 2015 The lower part of lithosphere in collisional orogens may delaminate due to density inversion between the asthenosphere and the cold thickened lithospheric mantle. Generally, standard delamination models have neglected density changes within the crust and
A. I. Kiselev +2 more
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The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins
Terra Nova, Volume 38, Issue 4, Page 251-258, August 2026.ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin +3 more
wiley +1 more source
The lithospheric mantle and lower crust–mantle relationships under Scotland: a xenolithic perspective [PDF]
Journal of the Geological Society, 2011 Abstract: In the British Isles the majority of volcanic rocks containing upper mantle and lower crustal xenoliths occur in Scotland. Most of the occurrences are of Carboniferous–Permian age. This paper presents new data on the mineral chemistry of spinel lherzolite xenoliths from the five principal Scottish tectonic terranes ...
B. G. J. UPTON +5 more
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Emergence of Continents Stabilized the Bioavailability of Boron
Terra Nova, Volume 38, Issue 4, Page 278-284, August 2026.ABSTRACT Boron is an essential element for the development of life on Earth; borates stabilize ribose in prebiotic reactions and facilitate metabolism in higher plants. There is, however, a relatively narrow surface boron concentration range over which borates stabilize and serve as a micronutrient rather than a toxin.
Brendan V. Dyck, Jon Wade
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2013 Broadband seismic experiments over the last two decades have produced dense data coverage across Tibet. Yet, the mechanism of the India‐Asia lithospheric convergence beneath it remains a puzzle, with even its basic features debated and with very ...
Matthew R. Agius, Sergei Lebedev
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Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract We investigate the structure and tectonic environment in the crust and upper mantle beneath the North China Craton (NCC) by conducting a full‐waveform inversion of teleseismic P and its coda waves from densely distributed broadband seismic stations. A high‐resolution model involving P‐ and S‐wave velocities as well as density is constructed by
Xuan Zhao +4 more
wiley +1 more source