Results 81 to 90 of about 3,644 (268)
A REE-in-garnet–clinopyroxene thermobarometer for eclogites, granulites and garnet peridotites [PDF]
, 2014 Author Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution.
Liang, Yan, Sun, Chenguang
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When a Plateau Suppresses a Plume: Disappearance of the Samoan Plume Under the Ontong Java Plateau
AGU Advances, Volume 5, Issue 4, August 2024.Abstract The Samoan hotspot generated an age‐progressive volcanic track that can be traced back to 24 Ma at Alexa Bank, but the trace of the older portion (>24 Ma) of the hotspot track is unclear. We show that six seamounts located in and around the Magellan Seamount chain—north of the Ontong‐Java Plateau (OJP)—have ages (87–106 Ma), geochemistry, and ...
M. G. Jackson +3 more
wiley +1 more source
Crater formation and erosional truncation of Arkhangelskaya kimberlite pipe (Russia)
Известия высших учебных заведений: Геология и разведка, 2019 The Late Devonian kimberlite pipes Arkhangelskaya, Pionerskaya, named after Grib, as well as a number of other pipes, have full sections of crater tufogenic and terrigenous deposits in the Zimneberezhny diamondiferous region, the thickness of which is ...
A. V. Bolonin +2 more
doaj +1 more source
Use of ERTS imagery for natural resources research and development in Lesotho [PDF]
The author has identified the following significant results. As far as the geological aspects of the project were concerned, the project was a success.
Jackson, A. A., Nixon, P. H.
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Ancient Craton‐Wide Mid‐Lithosphere Discontinuity Controlled by Pargasite Channels
Geophysical Research Letters, Volume 51, Issue 9, 16 May 2024.Abstract The mechanisms governing a commonly observed seismic velocity drop in the cratonic lithosphere, referred to as the mid‐lithospheric discontinuity (MLD), have been widely debated. To identify the composition and seismic structure of MLDs, we have analyzed Sp receiver functions (SRF) and mantle xenocrysts for six regions across Australia.
Z. J. Sudholz +6 more
wiley +1 more source
Tracing Deep Carbon Cycling by Zinc Isotopes in a Peralkaline‐Carbonatite Suite
Geochemistry, Geophysics, Geosystems, Volume 25, Issue 4, April 2024.Abstract Sedimentary carbonates are known to be carried into the deep mantle by subducted slabs, and studies on mantle‐derived magmas have attempted to trace the recycled carbonate in their mantle source. However, the final depth of storage of recycled carbonate and the role of recycled carbonate in the partial melting of mantle remain controversial ...
Bowen Wei +8 more
wiley +1 more source
Use of gamma-ray spectrometry for identifying weakly magnetic diamondiferous kimberlites [PDF]
, 2016 Diamondiferous kimberlites are the most important source of bedrock diamond deposits. The goal of the study is to analyze the use of gamma-ray spectrometry techniques to explore weakly magnetic diamondiferous kimberlites.
Ledengskiy, R. A.
core
Raman-based geobarometry of ultrahigh-pressure metamorphic rocks: applications, problems, and perspectives [PDF]
, 2010 Raman-based geobarometry has recently become increasingly popular because it is an elegant way to obtain information on peak metamorphic conditions or the entire pressure-temperature-time (P-T-t) path of metamorphic rocks, especially those formed under ...
Korsakov, Andrey V. +2 more
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Geochemistry, Geophysics, Geosystems, Volume 25, Issue 1, January 2024.Abstract The Northern Tanzanian Divergence in the East Africa Rift is arguably the best place on Earth to study the controls on rifting of thick lithosphere. Here, where the East Africa Rift intersects the Tanzanian Craton and the Mozambique Belt, the relationships between volcanism, faulting, pre‐existing structures and lithospheric thickness and ...
Sinan Özaydın +6 more
wiley +1 more source
Rapid erosion of the Southern African Plateau as it climbs over a mantle superswell [PDF]
, 2014 International audienceWe present new sedimentary flux data confirming that a large pulse of erosion affected the Southern African Plateau in the Late Cretaceous and is likely to be related to a major uplift episode of the plateau.
Baby, Guillaume +4 more
core +3 more sources