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Gold exploration in the Gabal Abu Karahish area, Central Eastern Desert, Egypt: an integrated geological perspective. [PDF]
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Carbonatites and alkaline rocks
2021This session thematizes the formation, evolution and economic importance of carbonatites and alkaline rocks. These play an important role for our society, as they contain exceptional high levels of critical raw materials, such as REE, Nb, P and F, to name a few.
Marks , Michael A.W. +2 more
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Alkaline rocks from continental Brazil
Earth-Science Reviews, 1981Abstract The present literature review on Brazilian alkaline rocks stresses mainly the petrographic and geologic aspects. At least eight different rock associations are represented. Agewise, four groups are found among southern Brazilian outcrops: an older one, about 240 m.y. only, that is still poorly known; the massifs clustered around Jacupiranga,
H.H.G.J. Ulbrich, C.B. Gomes
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Potassic alkaline-basic and alkaline volcanic rocks of Southern Mongolia
International Geology Review, 1978(1978). Potassic alkaline-basic and alkaline volcanic rocks of Southern Mongolia. International Geology Review: Vol. 20, No. 12, pp. 1426-1440.
V. A. Baskina +3 more
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Nature, 1975
THE hypothesis of limestone assimilation1,2, developed to explain differentiation of the Vesuvius magma, was long unchallenged for that area—and extended3—even when it had to be abandoned for other alkaline provinces. Trace element data made it difficult to reconcile the limestone assimilation hypothesis with many observations4–7, but even in 1966 when
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THE hypothesis of limestone assimilation1,2, developed to explain differentiation of the Vesuvius magma, was long unchallenged for that area—and extended3—even when it had to be abandoned for other alkaline provinces. Trace element data made it difficult to reconcile the limestone assimilation hypothesis with many observations4–7, but even in 1966 when
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Alkaline igneous rocks: a review symposium
Journal of the Geological Society, 1985Report of a meeting of the Volcanic Studies Group of the Geological Society held at Heriot-Watt University, Edinburgh, on 13–16 September 1984. The organizers were Dr J. G. Fitton and Professor B. G. J. Upton. The papers presented at the symposium will be published as a Special Publication of the Geological Society ...
J. G. Fitton, B. G. J. Upton
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Peralkaline-Alkaline Felsic Rocks
2020A synthesis of available data on REE concentrations in peralkaline granites of India is presented. Although peralkaline granite-hosted REE deposits are known world over, and one such deposit has also been mined actively in Kola Peninsula of Russia, but in India such deposits have not yet been established.
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Rb-Sr and U-Th-Pb systematics of alkaline rocks: the alkaline rocks from Italy
Geochimica et Cosmochimica Acta, 1976Abstract The isotopic composition of Pb and Sr and the abundances of Rb, Sr, U, Th, and Pb were determined for whole rock samples from all major volcanic centres of the Cenozoic alkaline volcanism of Central and South Italy, together with some samples from the contemporaneous anatectic Tuscan volcanism.
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Geological Society of America Bulletin, 1910
Definition Alkaline rocks include two classes: first, those relatively rich in soda, in potash, or in both; and, secondly, those which, with relatively low total of alkalies, yet carry essential amounts of minerals specially characteristic of alkali-rich eruptives, such as nephelite, leucite, analcite, etcetera.
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Definition Alkaline rocks include two classes: first, those relatively rich in soda, in potash, or in both; and, secondly, those which, with relatively low total of alkalies, yet carry essential amounts of minerals specially characteristic of alkali-rich eruptives, such as nephelite, leucite, analcite, etcetera.
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