Lead-isotope and trace-element geochemistry of Paleoproterozoic metasedimentary rocks in the Lead and Rochford basins (Black Hills, South Dakota, USA): Implications for genetic models, mineralization ages, and sources of leads in the Homestake gold deposit

Dahl, Peter S.; Frandsson, Mie Munck; Jensen, Lizette Apel; Hansen, Thomas Rintza; Terry, Michael P.; Frei, Karin Margarita

doi:10.1016/j.precamres.2009.03.004

Cited by 24 publications

(3 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The gold is associated with sulfide mineralization in the Homestake formation, an early Proterozoic banded iron formation (Caddey et al, 1991;Frei et al, 2009). This unit is associated with a series of metasedimentary and metavolcanic rocks that were deposited about 2.0 Ga.…”

Section: Homestake Mine and Duselmentioning

confidence: 99%

See 1 more Smart Citation

Underground reconnaissance and environmental monitoring related to geologic CO2 sequestration studies at the DUSEL Facility, Homestake Mine, South Dakota

Dobson¹

2009

View full text Add to dashboard Cite

Underground field reconnaissance was carried out in the Deep Underground Science and Engineering Laboratory (DUSEL) to identify potential locations for the planned geologic carbon sequestration experimental facility known as DUSEL CO2. In addition, instrumentation for continuous environmental monitoring of temperature, pressure, and relative humidity was installed at various locations within the Homestake mine. The motivation for this work is the need to locate and design the DUSEL CO2 facility currently being planned to host CO 2 and water flow and reaction experiments in long column pressure vessels over large vertical length scales. Review of existing geologic data and reconnaissance underground revealed numerous potential locations for vertical experimental flow columns, with limitations of existing vertical boreholes arising from limited vertical extent, poor continuity between drifts, and small diameter. Results from environmental monitoring over 46 days reveal spatial and temporal variations related to ventilation, weather, and ongoing dewatering of the mine.

show abstract

Section: Homestake Mine and Duselmentioning

confidence: 99%

“…These units underwent metamorphism associated with granitic intrusion at about 1.71 Ga (Frei et al, 2009). The rocks also underwent deformation during this orogenic event, resulting in the generation of tight isoclinal folds and shearing (Fig.…”

Section: Homestake Mine and Duselmentioning

confidence: 99%

Underground reconnaissance and environmental monitoring related to geologic CO2 sequestration studies at the DUSEL Facility, Homestake Mine, South Dakota

Dobson¹

2009

View full text Add to dashboard Cite

show abstract

“…По параметру µ 2 это источник близок к среднекоровому значению µ 2 = 9.74 и, напротив, отличается повышенными значениями ω 2 и Th/U по сравнению со среднекоровыми величинами (ω 2 = 36.84, Th/U = 3.78). Отмеченные Pb-Pb изотопные особенности источника характерны для свинца, поступавшего в рудообразующую систему из осадочных толщ морского происхождения [54]. Таким образом, результаты изучения вариаций изотопного состава S и Pb в сульфидах месторождения Ыкан указывают на участие в его генезисе вещества вмещающих оруденение метаосадочных пород.…”

Section: источники серы и свинца рудной минерализации месторождения ыканunclassified

Gold Mineralization Coincident With Amphibolite Facies Metamorphism: Ykan Deposit (Baikal-Patom Belt)

Budyak,

Tarasova,

Chugaev

et al. 2024

View full text Add to dashboard Cite

Black shale deposits whose metamorphic grade exceeds greenschist-facies of regional metamorphosed rocks are considered by most researchers exclusively from the point of view of the potential to mine alluvial gold. The article presents the results of the study on the Ykan deposit located within the epidote-amphibolite facies zone and its comparison with previously studied deposits localized in the greenschist facies alteration zone. It was found that the Ykan gold deposit is lithologically and stratigraphically confined to the contact between carbonaceous phyllite shales and sandstones of the Aunakit Formation in the anticlinal limb, which is one of the main factors controlling ore localization. The ore mineralization of the deposit is represented by the change of the early diathagenetic pyrite (py-I, py-II) → metamorphogenic pyrrhotite (po, cpy, asp) → metamorphogenic-metasomatic pyrite-polymetallic (cpy, asp, py-III, gln, sph, pn, mrc) → post-ore pyrite (py-IV) associations. The ore stage is characterized by the highest possible TP parameters in the early ore metamorphic phase and their decrease in the ore-productive phase. Data on variations in the isotopic composition of sulfur and lead indicate that they were transported into the ore fluid from the host meta-sedimentary strata of the Aunakit Formation. Comparison of the obtained parameters of the Ykan deposit with the previously studied deposits of Sukhoi Log, Golets the Highest, Ugakhan and Krasnyi made it possible to conclude that we are correct in assigning the Ykan deposit to the group of deposits of the Sukholozhsky genetic type.

show abstract

Constraints on the genesis of gold mineralization at the Homestake Gold Deposit, Black Hills, South Dakota from rhenium–osmium sulfide geochronology

et al. 2010

View full text Add to dashboard Cite

Lead-isotope and trace-element geochemistry of Paleoproterozoic metasedimentary rocks in the Lead and Rochford basins (Black Hills, South Dakota, USA): Implications for genetic models, mineralization ages, and sources of leads in the Homestake gold deposit

Cited by 24 publications

References 64 publications

Underground reconnaissance and environmental monitoring related to geologic CO2 sequestration studies at the DUSEL Facility, Homestake Mine, South Dakota

Underground reconnaissance and environmental monitoring related to geologic CO2 sequestration studies at the DUSEL Facility, Homestake Mine, South Dakota

Gold Mineralization Coincident With Amphibolite Facies Metamorphism: Ykan Deposit (Baikal-Patom Belt)

Constraints on the genesis of gold mineralization at the Homestake Gold Deposit, Black Hills, South Dakota from rhenium–osmium sulfide geochronology

Contact Info

Product

Resources

About