Results 101 to 110 of about 690,278 (261)

Archean metamorphic sequence and surfaces, Kangerdlugssuaq Fjord, East Greenland [PDF]

open access: yes
The characteristics of Archean metamorphic surfaces and fabrics of a mapped sequence of rocks older than about 3000 Ma provide information basic to an understanding of the structural evolution and metamorphic history in Kangerdlugssuaq Fjord, east ...
Kays, M. A.
core   +1 more source

Geological questions and significant results provided by early ERTS-1 data [PDF]

open access: yes
There are no author-identified significant results in this report. The organization for evaluating the uses of Earth Resources Technology Satellite data of the United States and foreign areas is described.
Carter, W. D.
core   +1 more source

Platinum-group element mineralisation in the Unst ophiolite, Shetland [PDF]

open access: yes, 1984
The ophiolitic basic and ultrabasic rocks of the island of Unst, Shetland comprise a sequence of harzburgites, dunites, clinopyroxene-rich cumulates, and gabbro, within tectonic blocks that have been thrust over a migmatite complex during the Laxer ...
Gunn, A.G., Leake, R.C., Styles, M.T.
core  

Poikilitic hornblende pyroxenite in the southern end of the Abukuma Mountains, Northeast Japan, as result of adakitic magmatism

open access: yesFrontiers in Geochemistry
Amphibole plays a pivotal role in mediating the flux of volatiles and partial melting that ultimately contribute to arc magmatism. The influence of amphibole from the lower crust to the upper mantle remains unclear due to limited opportunities for ...
Akira Wakazono   +6 more
doaj   +1 more source

Potential and challenges of underground CO2 storage via in-situ mineralization in Switzerland

open access: yesSwiss Journal of Geosciences
Carbon Capture and Storage (CCS) technologies play a critical role in achieving global and Swiss climate goals, particularly with Switzerland aiming to domestically store some of its residual CO2 emissions.
Adrian Martin   +5 more
doaj   +1 more source

Petrology and geochemistray of Imam-Zadeh Hashem mafic and ultramafic bodies, southern Guilan province

open access: yesJournal of Economic Geology, 2013
Mafic and ultramafic plutonic igneous bodies, with small and big outcrops, between Shemshak rock units (Jurassic) are observed in east of Imam Zadeh Hashem, in southern Guilan province.
Mojgan Salavati, Reza Fahim Guilani
doaj  

A history of the Lonar crater, India: An overview [PDF]

open access: yes
The origin of the circular structure at Lonar, India, described variously as cauldron, pit, hollow, depression, and crater, has been a controversial subject since the early nineteenth century.
Nayak, V. K.
core   +1 more source

High H2 production in sediment-hosted hydrothermal fluids at an ultraslow spreading mid-ocean ridge

open access: yesCommunications Earth & Environment
Hydrothermal systems at ultraslow-spreading mid-ocean ridges remain poorly characterized, particularly where sedimentary and ultramafic influences intersect.
Alexander Diehl   +17 more
doaj   +1 more source

Occurrence and mineral chemistry of high pressure phases, Portrillo basalt, southcentral New Mexico [PDF]

open access: yes
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.
core   +1 more source

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