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Tuesday, July 14, 2020 | History

2 edition of Deep-seated magmatism, its sources and plumes found in the catalog.

Deep-seated magmatism, its sources and plumes

International Workshop "Deep-seated magmatism, its sources and plumes" (8th 2008 Vladivostok, Russia)

Deep-seated magmatism, its sources and plumes

proceeding of VIII International Workshop = Glubinnyĭ magmatizm, ego istochniki i pli︠u︡my

by International Workshop "Deep-seated magmatism, its sources and plumes" (8th 2008 Vladivostok, Russia)

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Published by In-te of Geography SB RAS in Irkutsk .
Written in English


Edition Notes

Other titlesGlubinnyĭ magmatizm, ego istochniki i pli︠u︡my
Statementedited by N.V. Vladykin
ContributionsVladykin, N. V. (Nikolaĭ Vasilʹevich)
Classifications
LC ClassificationsQE461 .M548 2008
The Physical Object
Pagination238 p. :
Number of Pages238
ID Numbers
Open LibraryOL24543963M
ISBN 109785947971309
LC Control Number2010419176
OCLC/WorldCa643776115

– the Yellowstone plume does not extend be-low km, newer work published in shows that it extends down to km. My greater concern however turns on the dis-cussion of petrological and geochemical aspects of plume magmatism found in Chapters 6 and 7, for this is my home territory. One of the tenets of plume. Book Description. Several aspects of interpretation of geophysical data applied to the study of tectonics, geodynamics, metamorphism and magmatism are discussed. Deep-level geophysical data has revealed a new class of physical inhomogeneities in the lithosphere of various regions of .

In the case of the Emeishan and Tarim LIPs and Traps, many workers have invoked a mantle plume or even super-plume connection (Chung and Jahn, ; Pirajno, ; Xu et al., ;Zhang et al. to heterogeneity in the plume resulting from entrainment of upper-mantle wall rocks during ascent. The implication is that all the magmatism comes from the plume and its surroundings, i.e. from a depth of more than km. This hypothesis, proposed by Bell et al. (), is based essentially on two Sr-Nd-Pb isotope diagrams.

tive plume source regions which ha ve been bly had an intense plume magmatism. show that the vertical flow of deep-seated hot material always converges beneath central part of a "continent. Post-Paleozoic magmatism in Angola and Namibia (SW Africa) is widespread along the continental margin (flood tholeiites of the Paraná-Etendeka system), and along transverse lineaments (alkaline and alkaline-carbonatitic complexes; sodic and potassic suites). These different magmatic suites are strictly associated in space and/or time.


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Deep-seated magmatism, its sources and plumes by International Workshop "Deep-seated magmatism, its sources and plumes" (8th 2008 Vladivostok, Russia) Download PDF EPUB FB2

Magmatism and volcanism Deep-seated magmatism been linked to seismicity at a range of temporal and spatial scales since Pliny the Younger's observations of the 79 AD eruption of Mt.

Vesuvius. Magma chamber pressurization, magma migration, and eruption all induce seismicity (see Chapter 59 —Volcano Seismicity).Our interest here is in the triggering of regional tectonic earthquakes by magmatic processes. Thus plate tectonics, plate boundaries, global plate reorganization, normal magmatism, melting anomalies, volcanic chains, and mantle geochemistry can be unified into a single theory.

We see that many assumptions used in previous hypotheses can be discarded as unnecessary there is no need to locate the source of plumes in the lower mantle. Plates, Plumes, and Paradigms, Issue Volume of Geological Society of America Special Paper Plates, plumes, and paradigms Volume of Special paper - Geological Society of America Volume of Special papers: Editor: Gillian R.

Foulger: Edition: illustrated: Publisher: Geological Society of America, ISBN: The Ninetyeast Ridge, a km long north-south oriented submarine volcanic ridge in the eastern Indian Ocean, has been interpreted to have formed from magmatism associated with the deep-seated Kerguelen mantle plume as the Indian plate drifted rapidly northward during the Late Cretaceous.

Samples recovered along the ridge have the characteristic Dupal geochemical signatures of Indian. Arndt et al., attributed the basaltic and associated komatiitic magmatism to melting of a generally depleted mantle plume source and suggested that the oldest basalts erupted in an oceanic setting.

Alternatively, Green et al. [11] suggested that ca. Ga basalts at the base of the Pilbara Supergroup were contaminated by up to 25% of felsic Cited by: Plume-generated fluids/melts enriched in KeCaeCO 2 eH 2 O, produced mantle sources capable of generating widespread alkaline, mafic, and carbonatitic magmatism.

The Burpala massif is a concentrically zoned intrusion covering an area about km intrudes into the Vendian terrigenous rocks of the Kholodninsky Formation ().The temporal sequence of the main magmatic units in the massif is summarized in Table nite and melanocratic syenite dikes, which cut the country rocks in the western margin of the massif, have been considered as the.

It became a kind of thermal regulator for the ascending already tholeiitic mantle plume magmas. All deep-seated layers of the Earth and large low-velocity shear provinces, called mantle hot fields, partially melted enriched EM-I and EM-II mantles, and the depleted recent asthenosphere mantle, which is parental for midocean-ridge basalts, were.

A mantle plume is a buoyant mass of material in the mantle, which rises because of its buoyancy. The existence of mantle plumes in Earth was first suggested by Wilson () as an explanation of oceanic island chains, such as the Hawaiian-Emperor chain, which change progressively with age along the chain (Figure ).

Wilson proposed that as a. At the transition from the Permian to the Triassic, Eurasia was the site of voluminous flood-basalt extrusion and rifting. Major flood-basalt provinces occur in the Tunguska, Taymyr, Kuznetsk, Verkhoyansk-Vilyuy and Pechora areas, as well as in the South Chinese Emeishen area.

Contemporaneous rift systems developed in the West Siberian, South Kara Sea and Pyasina. Several aspects of interpretation of geophysical data applied to the study of tectonics, geodynamics, metamorphism and magmatism are discussed.

Deep-level. N. Vladykin, in Deep-seated Magmatism, Its Sources and Their Relation to Plume Processes. Proceedings of the 4th International Seminar (Inst. Geogr. SO RAN, Irkutsk, ), pp.

89– [in Russian]. Google Scholar. The Eocene Amaro basalts from southern Ethiopia also have a plume source but their lower source temperatures and isotopic characteristics are distinct from those of Afar. The remaining basalts from the Ethiopian rift, and throughout the Kenya and Western rifts, have a lithospheric source region as reflected in both radiogenic isotope and trace.

The wavespeed anomaly below Iceland would be consistent with a deep-seated plume if such variations in plume shape and style are indeed possible.

Some authors have suggested that upper-mantle plumes can be fed by lower-mantle up-wellings (e.g., Goes et al., ). The composition of the dikes can be explained by mixing at shallow depths between a plume source with high ³He/⁴He (> 26 RA) and ambient asthenospheric mantle, before ascent through the.

The Panxi region of SW China makes up most of the western margin of the Yangtze craton. Its structural pattern, defined by NS-trending deep faults, is superimposed on a zone of late Proterozoic crustal extension.

The Panxi region seems to have evolved as a continental rift in the Permian, and was subsequently subjected to compression, caused mainly by the Himalayan collision. The Comoro Islands are associated with the seaward extension of the EARS and have recently been linked with a deep-seated plume 9,24 for a superplume source for East Africa Rift magmatism.

The most common minerals on earth Information for Educators Mindat Articles The Elements Books & Magazines. Vladykin, N.V. (ed.) Deep-Seated Magmatism, its Sources and Plumes. Proceedings of the VI International Workshop, Irkutsk. Glazkovskaya Printing House, Irkutsk, Russia, Kovalenko, V.

I., Yarmoluyk, V. et al. Geology. Decreased plume activity after Ga caused sea level to fall, leading to the first extensive passive-margin sequences, including deposition of phosphorites, iron formations, and hydrocarbons.

Does the plume trigger magmatism in the asthenosphere and lithosphere?) to a large-scale asymmetric plume beneath the Mediterranean region. This plume has lain at a depth of to km for at least Ma, but may have begun its activity as early as Ma.

Although remote from the lithosphere, this plume apparently. Generalization of available literature and new original data showed that the Early Cretaceous high-Mg alkaline magmatism is confined to the ancient Lambert rift zone. Alkaline ultramafic rocks developed in the areas of this zone (Jetty Oasis, western flank of the Beaver and Radok lakes, Fisher and Meredith massifs) were derived through melting of metasomatized continental mantle at .The most common minerals on earth Information for Educators Mindat Articles The Elements Books & Magazines.

Vladykin, N.V. (ed.) Deep-Seated Magmatism, its Sources and Plumes. Proceedings of the VI International Workshop, Irkutsk. Glazkovskaya Printing House, Irkutsk, Russia, widespread metasomatic activity involving deep-seated plume activity.

In the latter, the widespread then discuss the role of plume activity and its direct or indirect interaction with the asthenosphere and the lithosphere in controlling mantle source modification, magmatism, and tectonics.