Tectonic aspects of Precambrian metallogeny of gold and uranium
- Авторлар: Glukhovskii M.1, Velichkin V.2, Shumilin M.3
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Мекемелер:
- Geological Institute
- Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
- Fedorovskii All-Russia Research Institute for Mineral Raw Materials
- Шығарылым: Том 472, № 1 (2017)
- Беттер: 6-10
- Бөлім: Geology
- URL: https://journals.rcsi.science/1028-334X/article/view/189352
- DOI: https://doi.org/10.1134/S1028334X17010044
- ID: 189352
Дәйексөз келтіру
Аннотация
A cause-and-effect relation is established between historical metallogeny of gold and uranium and extraterrestrial factors (impact events, evolution of the distance between Earth and Moon, rotation geodynamics), which significantly affected the Early Precambrian tectonic evolution of our planet. It is shown by the example of the complex Witwatersrand deposit that the Precambrian polygenetic Au and U deposits of the quartz–pebble type were formed within a near-equatorial epi-Archean supercontinent and were related to extraterrestrial factors under a rotation regime of the plume vertical tectonics. The beginning of breakup of the epi-Archean supercontinent in the Paleo- and Mesoproterozoic (2.0 ± 0.3 Ga) was related to the abrupt decrease in the velocity of the Earth’s axial rotation followed by the dominant regime of subhorizontal plate tectonics and formation of rich U deposits of the nonconformity type (which are structurally related to the horizontal inertial detachments at the contacts of the consolidated crust) and Meso- and Neoproterozoic sedimentary complexes.
Авторлар туралы
M. Glukhovskii
Geological Institute
Хат алмасуға жауапты Автор.
Email: maratg31@yandex.ru
Ресей, Moscow, 119017
V. Velichkin
Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Email: maratg31@yandex.ru
Ресей, Moscow, 119017
M. Shumilin
Fedorovskii All-Russia Research Institute for Mineral Raw Materials
Email: maratg31@yandex.ru
Ресей, Moscow, 119017