Radioelement concentrations in Archean granites of central Wyoming

Stuckless, John S.; Bunker, C.M.; Bush, Charles A.; VanTrump, George

doi:10.3133/ofr81948

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…. 13) consistent with data from granites of the Granite Mountains district, Wyoming (Stuckless, 1978(Stuckless, , 1979Stuckless et al, 1977), probably reflecting the greater mobility of U compared to Th in the surface or near-surface environment. The high Th/U ratio also supports the concept of uraniferous granite as a potential source for the formation of uranium deposits in nearby sedimentary basins.…”

Section: Yb Lusupporting

confidence: 78%

“…Localities with uranium mineralization after Nelson-Moore et al (1978): (1) Pedad Claims, (2) Crystal Mine, (3) pegmatite vein. portant source rocks for sedimentary uranium deposits indicated by detailed studies in Wyoming in relation to the Granite Mountains (Rosholt and Bartel, 1969;Seeland, 1978aSeeland, , 1978bStuckless, 1978Stuckless, , 1979 probably applies elsewhere in the Rocky Mountains and adjacent regions; (Dahlkamp, 1980;Rose and Wright, 1980;Ragland and Rogers, 1980;Silver et al, 1980). The use of stream-sediment data in the reconnaissance phase of exploration programmes elsewhere may focus attention on regions containing similar uraniferous granites, thereby helping to identify uranium provinces worthy of more detailed exploration.…”

Section: R J Howarthmentioning

confidence: 99%

“…Strong magnetic patterns are associated with the batholith (geoMetrics, 1979a), but interpretation of regional gravity data is uncertain (Qureshy, (Stablein, 1980); BC, Boulder Creek granodiorite, Colorado (Gable, 1980); BMt, Bokan Mountain granite, Alaska (Thompson et al, 1980); C, Cairngorm granite, Scotland (Plant et al, 1980); Dy, bostonite dyke, Front Range, Colorado (Simmons and Hedge 1978); E, Elberton granite, Georgia (Hess, 1979); GM, Granite Mountains, Wyoming (Stuckless et al, 1977;Stuckless, 1978); H, Helmsdale granite, Scotland (Plant et al, 1980); MtE, Mount Ethel granite, Colorado (Snyder and Hedge, 1978); PP, Pikes Peak batholith, Colorado (Hawley andWobus, 1976, 1977); RP, Rosalie Peak granite (Bryant and Hedge, 1978); S, Scottish 'barren' granites (Plant et al, 1980); SWE, Southwest England batholith (P. Simpson, pers. comm., 1980).…”

Section: Geologymentioning

confidence: 99%

“…Mountains, Wyoming (Stuckless et al, 1977;Stuckless, 1978); and the Mount Ethel granite, Colorado (Snyder, 1979). Clearly, the general trends for different suites of British granites may be identified in these data.…”

Section: Granitoids 461mentioning

confidence: 99%

“…Hence, regressing U on the rare earth elements will account for much of the uranium in these minerals, and residual uranium (total minus regression predicted uranium) can then be used to identify uranium mineralization (Koch et al, 1980). (Stuckless, 1978(Stuckless, , 1979Stuckless et al, 1977), probably reflecting the greater mobility of U compared to Th in the surface or near-surface environment. The high Th/U ratio also supports the concept of uraniferous granite as a potential source for the formation of uranium deposits in nearby sedimentary basins.…”

Section: Granitoids 461mentioning

confidence: 99%

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Identification of uraniferous granitoids in the USA using stream sediment geochemical data

Howarth

1981

Mineral. mag.

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Trace element variations in stream sediments from an area of 76 000 km2 in central Colorado are used to identify uraniferous granitoids on the basis of whole rock geochemical criteria developed to distinguish barren from metalliferous granitoids in Britain. These criteria (which include enhanced Ba, Be, Cs, Cs/Ba, K, La/Eu, Li, Lu/Eu, Nb, Rb, Rb/K, low Sr and Mg, and RE patterns with marked negative Eu anomalies) are used to formulate an index based on the Pikes Peak batholith of the Front Range as a type uranium source rock.Uraniferous granitoids in Colorado, which are associated with sedimentary basins containing major uranium mineralization, are identified using this index which may be applicable to the interpretation of stream sediments from elsewhere. The use of stream sediment geochemistry as an exploration method for similar uranium source rocks, which may indicate potential uranium provinces, is thus possible.

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Section: Yb Lusupporting

confidence: 78%

Section: R J Howarthmentioning

confidence: 99%

Section: Geologymentioning

confidence: 99%

Section: Granitoids 461mentioning

confidence: 99%

Section: Granitoids 461mentioning

confidence: 99%

See 3 more Smart Citations

Identification of uraniferous granitoids in the USA using stream sediment geochemical data

Howarth

1981

Mineral. mag.

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Tectonothermics of the North American great plains basement

Drury

1988

Tectonophysics

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Using granite to image the thermal state of the source terrane

Zen

1992

Earth and Environmental Science Transactions of the Royal Socie

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It should be possible to infer the thermal state of the source terrane for granitic bodies, provided we have independent means to establish the chemical nature of this terrane. The chemical nature of the granitic rocks, including their degree of hydration, implies the solidus temperature. The concentration of the heat-producing radioactive elements in the granite (K, U, and Th) probably provides an upper estimate of their concentration in the source rock, which is an important thermal parameter. The depth and ambient temperature of the country rock into which the granite magma intruded provide useful boundary conditions for the thermal regime at the crustal level of anatexis. These constraints in turn form the bases for estimating the subcrustal thermal flux as well as the effective thermal interface for enhanced heat flow from below that resulted in anatexis. These inferences, in combination with other field-based parameters such as uplift rates and permissible time lapses for the geological events, permit realistic thermal modelling for the formation of granitic batholiths. The procedure is applied to the Late Cretaceous Pioneer and Boulder batholiths in southwestern Montana, U.S.A. The modelling results suggest that mantle upwelling, not subduction or thrust loading, caused anatexis. The isotopic chemistry of the granitic rocks rules out direct mixing of mantle magma, and field relations rule out crustal thinning as causes for partial melting.

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Radioelement concentrations in Archean granites of central Wyoming

Cited by 4 publications

References 20 publications

Identification of uraniferous granitoids in the USA using stream sediment geochemical data

Identification of uraniferous granitoids in the USA using stream sediment geochemical data

Tectonothermics of the North American great plains basement

Using granite to image the thermal state of the source terrane

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