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The Mantle Fe<sup>3+</sup>/ΣFe Ratio Has Doubled Since the Early Archean. [PDF]
Nat CommunZhu XX +4 more
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Ancient storage of anomalous mercury isotope signatures in the Earth's transition zone. [PDF]
Nat CommunXu R +14 more
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The location of compression-induced subduction initiation controlled by structural versus thermal inheritance. [PDF]
Commun Earth EnvironOravecz É, Gerya T, Balázs A.
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Calcium isotopic compositions of oceanic crust at various spreading rates
Geochimica et Cosmochimica Acta, 2020The oceanic crust consists mainly of a lower layer of cumulate gabbroic rocks and an upper layer of differentiated basalts. The thicknesses and proportions of the gabbroic and basaltic layers in different oceans are largely controlled by spreading rate ...
Chunfei Chen +8 more
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Nature, 1974
OPHIOLITES consist of a pseudostratiform sequence, of harzburgite, tectonite, ultramafic and mafic cumulates sometimes including gabbro and quartz diorite (plagiogranite) intrusions, dolerite dyke swarms, pillow lava1, and deep-sea sediments2–4. This assemblage occurs in all Phanerozoic mountain systems and is interpreted as fossil oceanic crust and ...
E. M. MOORES, E. D. JACKSON
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OPHIOLITES consist of a pseudostratiform sequence, of harzburgite, tectonite, ultramafic and mafic cumulates sometimes including gabbro and quartz diorite (plagiogranite) intrusions, dolerite dyke swarms, pillow lava1, and deep-sea sediments2–4. This assemblage occurs in all Phanerozoic mountain systems and is interpreted as fossil oceanic crust and ...
E. M. MOORES, E. D. JACKSON
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AAPG Bulletin, 1979
The model presented is based on the interpretation of marine geophysical data, studies of dredged rocks, theoretical modeling, geologic investigations of ophiolite complexes on the continents, and results of deep-sea crustal drilling by JOIDES/IPOD. Along the axis of the midoceanic ridge system a zone of upwelling asthenosphere extends from the base of
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The model presented is based on the interpretation of marine geophysical data, studies of dredged rocks, theoretical modeling, geologic investigations of ophiolite complexes on the continents, and results of deep-sea crustal drilling by JOIDES/IPOD. Along the axis of the midoceanic ridge system a zone of upwelling asthenosphere extends from the base of
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1991
The Pacific Ocean basin comprises about one third of the earth’s surface, or 49.8% by area of our planet’s oceans and seas. It includes the earth’s largest and fastest moving plate, the Pacific plate, in addition to the smaller Nazca, Cocos, Rivera, Juan de Fuca, Gorda and Explorer plates, three so-called microplates (Galapagos, Easter and Juan ...
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The Pacific Ocean basin comprises about one third of the earth’s surface, or 49.8% by area of our planet’s oceans and seas. It includes the earth’s largest and fastest moving plate, the Pacific plate, in addition to the smaller Nazca, Cocos, Rivera, Juan de Fuca, Gorda and Explorer plates, three so-called microplates (Galapagos, Easter and Juan ...
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Nature, 1984
The density structure and average density of the oceanic crust have implications for various geological and geophysical problems, including interpretations of gravity data, the variation of lithospheric bouyancy in relation to age, and role and fate of the crust in subduction.
R. L. Carlson, G. S. Raskin
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The density structure and average density of the oceanic crust have implications for various geological and geophysical problems, including interpretations of gravity data, the variation of lithospheric bouyancy in relation to age, and role and fate of the crust in subduction.
R. L. Carlson, G. S. Raskin
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1991
In this chapter studies on Indian Ocean abyssal basalts are used as a vehicle to discuss magmatic lineages and melting processes, largely derived from detailed petrographic observations and mineral chemistry. The mineralogical aspects and the magmatic processes envisaged can be considered as adjunct topics to Chapters 5 and 7, respectively, in Part II.
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In this chapter studies on Indian Ocean abyssal basalts are used as a vehicle to discuss magmatic lineages and melting processes, largely derived from detailed petrographic observations and mineral chemistry. The mineralogical aspects and the magmatic processes envisaged can be considered as adjunct topics to Chapters 5 and 7, respectively, in Part II.
openaire +1 more source