Results 21 to 30 of about 23,483 (232)

西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]

, 2010
This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core   +1 more source

Spinel crystals in mantle ultramafic xenoliths as the source of P-T conditions of alteration above the magma chamber beneath the Avacha Volcano (Kamchatka)

Journal of Asian Earth Sciences: X, 2022
This study focuses on the ability of spinel crystals in ultramafic xenoliths, like zircon, to store the primary composition and structure when exposed to magma fluid flows or the thermal heating of ultramafic fragments in magma flows during volcanic ...
Viktor Sharapov, Yuri Semenov, Grigory Kuznetsov, Anatoly Boguslavsky   +3 more
doaj   +1 more source

Platinum group element mineralization at Musongati (Burundi) : concentration and Pd-Rh distribution in pentlandite [PDF]

, 2017
The mafic-ultramafic intrusions of the Karagwe-Ankole belt in Burundi are considered as a new potential source for platinum group elements (PGE). The intrusions have mainly been studied for their PGE potential with regard to PGE concentration, but the ...
Dewaele, Stijn, Muchez, Philippe, Paredis, Bram   +2 more
core   +1 more source

Experimental and simulation efforts in the astrobiological exploration of exooceans [PDF]

, 2020
The icy satellites of Jupiter and Saturn are perhaps the most promising places in the Solar System regarding habitability. However, the potential habitable environments are hidden underneath km-thick ice shells.
Antunes, André, Casas, Eloi Camprubi [u.v.m.], Klenner, Fabian, Noack, Lena, Olsson-Francis, Karen, Postberg, Frank, Ramkissoon, Nisha K., Taubner, Ruth-Sophie, Vance, Steven D., Vera, Jean-Pierre de   +9 more
core   +1 more source

The lithospheric mantle and lower crust-mantle relationships under Scotland: a xenolithic perspective [PDF]

, 2011
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.
Arai, B.G.J. Upton, Bonadiman, C. Bonadiman, Greenbaum, Griffin, H. Downes, Irving, Johnson, Kirstein, L.A. Kirstein, Larsen, Macdonald, McDonough, Menzies, P.G. Hill, Singh, T. Ntaflos   +17 more
core   +1 more source

Ultramafic rock carbonation: Constraints from listvenite core BT1B, Oman Drilling Project [PDF]

Journal of Geophysical Research: Solid Earth, 2019
Abstract The occurrence of the quartz‐carbonate alteration assemblage (listvenite) in ophiolites indicates that ultramafic rock represents an effective sink for dissolved CO 2 .
Beinlich A., Plumper O., Boter E., Muller I. A., Kourim F., Ziegler M., Harigane Y., Lafay R., Kelemen P. B., the Oman Drilling Project Science Team, Laura Crispini   +10 more
openaire   +8 more sources

Carbon Mineralization in Fractured Mafic and Ultramafic Rocks: A Review. [PDF]

Rev Geophys
Nisbet H, Buscarnera G, Carey JW, Chen MA, Detournay E, Huang H, Hyman JD, Kang PK, Kang Q, Labuz JF, Li W, Matter J, Neil CW, Srinivasan G, Sweeney MR, Voller VR, Yang W, Yang Y, Viswanathan HS.   +18 more
europepmc   +2 more sources

Theoretical petrology [PDF]

, 1979
The central issues in petrology have remained remarkably unchanged in the last 50 years. In igneous petrology, the focus is on understanding the nature and cause of diversity in igneous rocks: on identifying primary magma types and constraints on the ...
Stolper, Edward
core   +1 more source

Abiotic Methane Generation via CO2 Hydrogenation With Natural Chromitite Under Hydrothermal Conditions

Geochemistry, Geophysics, Geosystems, 2021
In modern continental serpentinization systems and ultramafic rock‐hosted sub‐seafloor hydrothermal systems, it is believed that chromitite plays an important role in abiotic hydrocarbon generation.
Hisahiro Ueda, Yohei Matsui, Yusuke Sawaki   +2 more
doaj   +1 more source

Petrogenetic Study on Ultramafic Rocks from Waturapa and Surrounding Areas, South Konawe Regency, Southeast Sulawesi Province

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
The petrogenesis study of ultramafic igneous rocks in the South Konawe Region has been carried out by several previous researchers, however, petrogenesis of ultramafic igneous rocks in the Waturapa Region has never been carried out in detail.
Hasria, Masri, Muhammad Arba Azzaman, Muhamad Jerniawan   +3 more
doaj   +1 more source