Results 71 to 80 of about 23,483 (232)
Rudarsko-geološko-naftni ZbornikSebuku Island is located at the southeastern tip of Kalimantan Island and has geological similarities with the Bobaris-Meratus complex in distribution pattern and stratigraphic sequence.
Wahyu Widodo +6 more
doaj +1 more source
Peridotite weathering is the missing ingredient of Earth’s continental crust composition
Nature Communications, 2018 The concentration of Ni and Cr of the continental crust cannot be explained by formation models involving differentiated magmatic rocks. Here, the authors show that hydrothermal alteration and chemical weathering of ultramafic rock compensates for the ...
Andreas Beinlich +5 more
doaj +1 more source
Near-seafloor magnetic mapping of off-axis lava flows near the Kairei and Yokoniwa hydrothermal vent fields in the Central Indian Ridge [PDF]
, 2018 The Kairei (KHF) and Yokoniwa hydrothermal fields (YHF) are hosted in mafic as well as ultramafic rocks distributed at an off-axis volcanic knoll of the Central Indian Ridge.
Kyoko Okino, Masakazu Fujii
core +2 more sources
Arc Heat Flow and Magmatic Heat Budgets
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract We evaluate hydrothermal heat loss from 11 volcanic‐arc segments (∼6,000 km of arc length, ∼10% of the global total), motivated by the observation that much magmatic heat ultimately crosses the land surface as heated aqueous fluid. Heat loss takes place by volcanic eruption, geothermal heat conduction to the surface, fumarolic (vapor ...
S. E. Ingebritsen +7 more
wiley +1 more source
Geologica Acta, 2013 This paper is essentially a review of previously published data and interpretations for ultramafic and eclogitic rocks from the Cuaba terrane in northern Dominican Republic.
R.N. ABBOTT, G. DRAPER
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Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS
Geostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro +7 more
wiley +1 more source
Occurrence and mineral chemistry of high pressure phases, Portrillo basalt, southcentral New Mexico [PDF]
Inclusions of clinopyroxenite, kaersutiteclinopyroxenite, kaersutite-rich inclusions, wehrlite and olivine-clinopyroxenite together with megacrysts of feldspar, kaersutite and spinel are found loose on the flanks of cinder cones, as inclusions within ...
Hoffer, J. M., Ortiz, T. S.
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Geostandards and Geoanalytical Research, Volume 50, Issue 2, Page 391-406, June 2026.Key Points A new magnetite reference material (PF21mt) is available for δ18O measurements by SIMS. Reproducibility of measurement results in two laboratories suggest orientation bias of ±2‰ (2s) at 20 keV. Repeatability improves to ±1‰ (2s) when using a 13 keV protocol, suggesting reduced orientation bias. In situ isotope ratio measurements provide the
Michelle Ulrich +4 more
wiley +1 more source
Journal of Degraded and Mining Lands Management, 2018 Geochemistry of ultramafic rocks in the Latowu Area of North Kolaka Regency, Southeast Sulawesi has been investigated with the aim at deciphering of mineral characteristics, chemical composition and their potential use as carbon dioxide storage ...
S Sufriadin +4 more
doaj +1 more source
Towards OWL-based Knowledge Representation in Petrology
, 2011 This paper presents our work on development of OWL-driven systems for formal representation and reasoning about terminological knowledge and facts in petrology.
Kudryavtsev, Dmitry +2 more
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