Results 131 to 140 of about 446 (178)
Journal of Petrology, 1984 Samples from several stratigraphic levels in the Miocene volcanic succession on Lesbos, Greece, contain complexly zoned clinopyroxene and feldspar phenocrysts.
Y Georgia Pe-piper
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Acta Geologica Sinica, 1996 Abstract The shoshonite province in eastern China is characterized by extensive distribution (ca. 80000 km2) of Late Jurassic–Early Cretaceous (165–100 Ma) shoshonite series with subordinate high–K calc–alkali series. It was formed in a dominantly tensile stress field.
Wang Dezi +5 more
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Lithos, 2013 In this paper we document the existence of a Miocene shoshonite (SHO) volcanism in Northern Sardinia (Anglona). This occurrence completes the spectrum of orogenic magmas related to the subduction process which developed from the Eocene along the Palaeo ...
Claudio Natali +2 more
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Water-enhanced interdiffusion of major elements between natural shoshonite and high-K rhyolite melts [PDF]
Chemical Geology, 2017 The interdiffusion of six major elements (Si, Ti, Fe, Mg, Ca, K) between natural shoshonite and a high-K rhyolite (Vulcano island, Aeolian archipelago, Italy) has been experimentally measured by the diffusion couple technique at 1200°C, pressures from 50
Maurizio Petrelli +2 more
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Mineralium Deposita, 2002 The Skouries porphyry Cu–Au deposit, containing an indicated reserve of 206 Mt at 0.54% Cu and 0.80 g/t Au, is hosted by at least four hypabyssal monzonite–porphyry phases.
Daniel Müller, Peter M Herzig
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The shoshonite association: A review
Journal of the Geological Society of Australia, 1968Abstract The absarokite‐shoshonite‐banakite series described from Yellowstone Park by Iddings and the ciminite‐toscanite series described from western Italy by Washington are compared. In both regions these rocks are associated with leucite‐bearing rocks, potassium‐rich trachytes and with andesitic rocks with above average potassium.
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Journal of South American Earth Sciences, 1998
Abstract The Neoproterozoic Lavras do Sul Shoshonitic Association in southernmost Brazil is related to the last stages of Brasiliano Orogeny and comprises a wide compositional range of intrusive and extrusive basic to acid rocks. It includes potassic trachybasalts, shoshonites, dacites, rhyolites, quartz diorites and monzodiorites, quartz monzonites,
E.F. De Lima, L.V.S. Nardi
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Abstract The Neoproterozoic Lavras do Sul Shoshonitic Association in southernmost Brazil is related to the last stages of Brasiliano Orogeny and comprises a wide compositional range of intrusive and extrusive basic to acid rocks. It includes potassic trachybasalts, shoshonites, dacites, rhyolites, quartz diorites and monzodiorites, quartz monzonites,
E.F. De Lima, L.V.S. Nardi
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Genesis of Mariana shoshonites: Contribution of the subduction component
Journal of Geophysical Research: Solid Earth, 2001The Izu‐Bonin‐Mariana arc contains a unique group of shoshonitic volcanoes from along the magmatic front of this intraoceanic arc. Shoshonites are greatly enriched in incompatible elements compared to lavas typically found in primitive arc settings but have fractionations of lithophile (LIL) and high‐field strength (HFSE) incompatible elements ...
Chih‐Hsien Sun, Robert J. Stern
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Some chemical data on members of the shoshonite association
Mineralogical Magazine, 1972Summary A number of minerals and residual glasses from absarokites, shoshonites, and latites have been analysed by electron probe.
Germaine A. Joplin +3 more
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Characteristics and tectonic setting of the shoshonite rock association
Lithos, 1980Abstract A review of the major occurrences of shoshonitic rocks suggests there is a group that is near-silica saturated, K-rich and has low iron enrichment that cannot be unambigously classified as part of calc-alkaline or alkali-basalt associations. This group is here referred to as the shoshonite rock association. The shoshonite rock association is
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