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Tuttle, O. F.; Bowen, N. L.

doi:10.1130/mem74-p1

Cited by 799 publications

(75 citation statements)

References 1 publication

(1 reference statement)

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“…When projected onto the ter-nary system Q-Ab-Or, all the samples plot near the center of the diagram ( fig. 3), with nearly half the samples falling along the polybaric minimum-melt compositions for the system SiO2-NaAlSi3O8-KAlSi3O8-H2O (Tuttle and Bowen, 1958;Luth and others, 1964). The field occupied is similar to that for 281 peraluminous granites (Luth and others, 1964).…”

Section: Geochemistrymentioning

confidence: 99%

Petrogenetic modeling of a potential uranium source rock, Granite Mountains, Wyoming

Stuckless¹,

Miesch²

1981

Professional Paper

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Section: Geochemistrymentioning

confidence: 99%

Petrogenetic modeling of a potential uranium source rock, Granite Mountains, Wyoming

Stuckless¹,

Miesch²

1981

Professional Paper

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“…In their exceoptionally low contents of normative An and of femic minerals other than iron oxides the bostonite and quartz bostonite magmas closely approached compositions lying within the simplified -^ system Ab-Or-Q studied by Tuttle and Bowen (1958). One of thê quartz bostonites (p 559) was nearly identical in composition to one of the synthetic mixtures (Q-10F) studied by Tuttle and Bowen at 3000 kg/cm^ pressure of HpO.…”

Section: Magmatic Differentiation As Relatedathe Fractionation Of Uramentioning

confidence: 78%

“…In their exceoptionally low contents of normative An and of femic minerals other than iron oxides the bostonite and quartz bostonite magmas closely approached compositions lying within the simplified -^ system Ab-Or-Q studied by Tuttle and Bowen (1958) The relatively high PC^ is believed to have had two important effects / 1) it presented the formation of iron-rich biotite in accordance with the experimental results of E;fgster and Wones (1962) 2) it oxidized much of the uranium contained in the magma to U in which state it readily complexes to form the uranyl ion U.0«+ . The ;><.…”

mentioning

confidence: 99%

Tabulation of uranium and thorium data on the Mesozoic-Cenozoic intrusive rocks of known chemical composition in Colorado

Phair¹,

Jenkins²

1975

Open-File Report

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26. Rank in magmatic uranium potential (classes 1 and 2) from data in Table 23, and Rank in economic uranium potential, based primarily upon data in Sims and Sheridan (1964). oitchblende deposits of Classes I and II of Sonic and Sheridan (1964, p. 22). Such deposits, unlike those of Class III, aopear to share a comon nagmatic origin with the uranium concentrated in the associated igneous rocks of closely related age. These deposits are, therefore, consanguineous with the intrusives in contrast to deposits of Class III.As will be^escribed in subsequent reports, the uranium in class III deposits is inferred to have been "exoqenic" in origin derived by processes of hydrothermal secretion from much older and otherwise genetically unrelated granitic wall rocks without passing through a n:acinaffc medium Class I deposits (uraniur bearing fluorite deposits) and class II deposits (uranium bearing base -etal veins) The tabulated data coaoled with extensive mineralogical studies Drovide the basis for a detailed companion paper analyzing:(1) origin and diversification of the early magmas in Colorado (2) macmatic differentiation in the separate magma series and sub series (3) the parts played by (a) crystal fractionation, (b) assimila-' tion and (c) aqueous fluids in the fractionation of uranium and thorium This paper is now in preparation./£j*ff£ir / S? ?<*<:Aroal, temporal 'Qfvd--ehefitfea4-iTra^ma-tfc-su-bdiVi-sicrns. The separate areas of Intrusion examined in this report are subdivided into major geographic units reoresented by (1) the Central Front Range east of the Continental Divide (tables 1-11) an area characterized by an abundance of vein-type uranium deposits, (2) the Front range exclusive of the east-central region (Table 12), (3) Marvin, Young, Mahnert, and ' { Naeser (1974). Magma series of no less than 7 distinct chemical types are found in the area of the Central Front Range east of the Continental Divide, an area of roughly 50 x 50 km^. Of these 7 magma types, the sodic alkalic, and the sodic alkali calcic sub series together with the ; CaO-poor late stage differentiates, the end members of the sodic alkali-! calcic line of de.scent contain markedly more uranium and thorium than do : the remaining types including tholeiitic, potassic alkalic, potassic alkali calcic, and alkali calcic transitional into calc alkalic. Because uranium and thorium tend to be stored up in the residual magma during fractional crystallization any small "excess" of the constituents present at the early stage represented by the Peacock Index is potentially capable of undergoing multiplication many times over by the time the end member of the particular subseries has differentiated. The precise multiplication factor would depend upon the intensity of the crystal fractionation. Similarly,to the extent that fractional crystallization, per se, was the dominant mechanism throughout the differentiation of any one subseries, a generally progressive build up of . uranium and thorium concentration within the limits of scatter of the ...

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“…On a Qz-Ab-Or diagram (Tuttle and Bowen, 1958), the normative compositions hav ing differentiation indices (Thornton and Tut tle, 1960) higher than 80, are near the cotectic lines at 1 and 2 kb P H2O (Fig. 8).…”

Section: Mineral Chemistrymentioning

confidence: 99%

Petrology of an epizonal gabbroic suite: The Batow pluton, Yamizo Mountains, Central Japan.

Tanaka¹,

Huang

Nakamura

et al. 1987

J. Japan. Assoc. Min. Petr. Econ. Geol.

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The Batow pluton, an epizonal gabbroic body, Central Japan , was studied to delineate its geologic, petrographic and geochemical characteristics. Though the pluton is small, it exhibits a wide compositional range from melagabbro to granodiorite and varies from 42 .8 to 62.7 wt.% SiO2. The granitic rocks characterized by an abundance of amphibole (up to 39%) and a scarcity of biotite (less than 4%) were formed at a higher P H2O and lower temperature than early-crystallized gabbros. The close association of clinopyroxene-and biotite-rich gabbro, whose clinopyroxene and plagioclase often show reverse zoning in the Mg/(Mg+Fe*) ratio and An content, with amphibole-rich gabbro suggests that P H2O had increased rapidly during crystallization of the gabbroic melt. The intrusion of H2O-saturated granodioritic melt to the gabbroic melt may have caused the rapid increase of P H2O.

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Untitled

Cited by 799 publications

References 1 publication

Petrogenetic modeling of a potential uranium source rock, Granite Mountains, Wyoming

Petrogenetic modeling of a potential uranium source rock, Granite Mountains, Wyoming

Tabulation of uranium and thorium data on the Mesozoic-Cenozoic intrusive rocks of known chemical composition in Colorado

Petrology of an epizonal gabbroic suite: The Batow pluton, Yamizo Mountains, Central Japan.

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