Results 41 to 50 of about 2,787 (213)

Gold metallogeny of Australia [PDF]

open access: yes, 1987
The gold metallogeny of Australia is predominantly confined to the Archaean and Palaeozoic Provinces. The Archaean gold occurrences are predominantly hosted in ultramafic-mafic dominated greenstone belts, with less associated tofelsic-volcanic and ...
Rankine, Graham M
core   +1 more source

DIBROVSKOE URANIUM-TORIUM-RARE-EARTH ORE OCCURRENCE OF THE UKRAINIAN SHIELD (LITHO-STRATIGRAPHIC CRITERIА OF THE GENESIS AND LOCALIZATION OF ORE BODIES)

open access: yesГеохімія техногенезу, 2019
The paper compares the Dibrovskoe uranium-thorium-rare-earth ore occurrence of the Ukrainian shield (northern Azov region) by a num-ber of criteria (structural-tectonic, formational, stratigraphic, geochronological, lithological, mineral-petrographic ...
Pokalyuk V.   +4 more
doaj   +1 more source

Predicting the Sound Speed of Seafloor Sediments in the East China Sea Based on an XGBoost Algorithm

open access: yesJournal of Marine Science and Engineering, 2022
Based on the acoustic and physical data of typical seafloor sediment samples collected in the East China Sea, this study on the super parameter selection and contribution of the characteristic factors of the machine learning model for predicting the ...
Mujun Chen   +9 more
doaj   +1 more source

Metallogeny linked to mantle dynamics in the Sanjiang Tethys region as inferred from P-wave teleseismic tomographic study

open access: yes, 2017
The Sanjiang Tethys tectonic domain is one of the major metallogenic belts in China. The magmatism and metallogeny in this region have been variously attributed to break-off of the subducted slab, delamination of the lower crust or lithosphere, and ...
Yang, Q., He, C., Santosh, M.
core   +1 more source

Fragment of a central-type large structure located in southern Uganda and its metallogenic value

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2020
For the southern regions of Uganda, the metallogenic value of the regional arc belt of dikes of the main and ultrabasic composition was considered. It is shown that it is part of the arc sector of a large central-type structure with a diameter of about ...
P. A. Ignatov   +3 more
doaj   +1 more source

Inversion of the physical properties of seafloor surface sediments based on AUV sub-bottom profile data in the northern slope of the South China Sea

open access: yesScientific Reports, 2021
Based on the seafloor reflection coefficient obtained from autonomous underwater vehicle (AUV) sub-bottom profile survey data of the northern slope of the South China Sea, combined with the sample test data of seafloor surface sediments, we use the Biot ...
Qingjie Zhou   +8 more
doaj   +1 more source

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar   +6 more
wiley   +1 more source

Gold metallogeny of Southern Mongolia

open access: yesРуды и металлы
Within the Southern Mongolia, the South Gobi gold ore belt stretching in the sublatitudinal direction for almost 1000 km is the most promising in terms of ore gold. Several gold ore regions are distinguished within its boundaries, the most significant of
Gaskov I. V.
doaj   +1 more source

Geochemical Characteristics and Their Geological Significance of Zircon and Apatite From the Wunugetushan Porphyry Cu–Mo Deposit, Inner Mongolia, NE China

open access: yesActa Geologica Sinica - English Edition, Volume 100, Issue 3, Page 795-813, June 2026.
The key factors making the monzogranitic porphyry fertile for mineralization, including its high Cl, S, and H2O contents, high oxidation state, significant fluid exsolution, and multiple recharges of deep‐seated mafic magma, were all critical for the formation of the Wunugetushan porphyry Cu‐Mo deposit. ABSTRACT The Wunugetushan (Wushan) porphyry Cu–Mo
Genyuan JI   +4 more
wiley   +1 more source

Origin of gold metallogeny and sources of ore-forming fluids, Jiaodong Province, eastern China

open access: yes, 2005
In this paper we use published isotopic ages for gold deposits and related rocks in the Jiaodong Peninsula (East Shandong Province) to investigate the origin of the large-scale gold metallogeny in the region, which contains world-class lode gold deposits.
Qi, J-P   +4 more
core   +1 more source

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