Два этапа золото-сульфидной минерализации в раннепротерозойских габброидах Северного Приладожья

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Два этапа золото-сульфидной минерализации в раннепротерозойских габброидах Северного Приладожья. / Балтыбаев, Шаукет Каимович ; Овчинникова, Галина Владимировна ; Кузнецов, Антон Борисович ; Васильева, Ирина Михайловна ; Ризванова, Наиля Гаптрахмановна ; Алексеев, Иван Александрович ; Кириллова, Полина Алексеевна .

в: Вестник Санкт-Петербургского университета. Науки о Земле, Том 66, № 3, 01.07.2021, стр. 1-27.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{0996728152d149fe86b4eb96e1c66f98,

title = "Два этапа золото-сульфидной минерализации в раннепротерозойских габброидах Северного Приладожья",

abstract = "In a study based on Pb isotopes, it has been shown that the formation of gold-sulfide mineralization in the Early Proterozoic gabbros of the Northern Ladoga region is associated with different tectonic phases. This conclusion is based on a comparative study of isotopic data for feldspars and lead sulfides in two Early Proterozoic intrusions; Velim{\"a}ki and Alattu-P{\"a}kyl{\"a}. The investigated intrusions have similar geological settings at the junction of the Svecofennian accretionary complex and the Karelian craton. Both massifs are characterized by manifestations of noble metal sulfide mineralization associated with zones of local shear deformations. The formation of the studied ore massifs is attributed to the Svecofennian and Caledonian tectonic stages. Feldspars of Velim{\"a}ki intrusion have parameters and model age of Pb significantly older than U-Pb age of zircon (1.9 Ga), although they correspond to the Svecofennian time of magmatic crystallization of gabbro and clinopyroxenites, while sulfide pyrite-pyrrhotite mineralization is associated with gold in these rocks with the Caledonian stage of fluid-thermal processing of the Early Proterozoic magmatic mineral paracenteses. Feldspars and sulfides of the Alattu-P{\"a}kyl{\"a} intrusion have similar lead isotopic parameters and Pb model age (~ 2 Ga), also somewhat older than the U-Pb age of zircon, but at the same time indicating the formation of rock-forming and ore sulfide associations with gold during the Svecofennian (Early Proterozoic) plutonic and tectonic-thermal events. The source of lead sulfides of the Velim{\"a}ki massif is characterized by the parameters of the upper crust with high µ2 = 238U / 204Pb, while the µ2 parameter of the minerals of the Alattu-P{\"a}kyl{\"a} massif is slightly lower, which indicates the participation of the mantle-lower crustal reservoir material in the formation of magma.",

keywords = "Gabbroides, Isotope composition of lead, Ladoga area, Sulfides",

author = "Балтыбаев, {Шаукет Каимович} and Овчинникова, {Галина Владимировна} and Кузнецов, {Антон Борисович} and Васильева, {Ирина Михайловна} and Ризванова, {Наиля Гаптрахмановна} and Алексеев, {Иван Александрович} and Кириллова, {Полина Алексеевна}",

year = "2021",

month = jul,

day = "1",

doi = "10.21638/spbu07.2021.307",

language = "русский",

volume = "66",

pages = "1--27",

journal = "Вестник Санкт-Петербургского университета. Науки о Земле",

issn = "1812-9323",

publisher = "Издательство Санкт-Петербургского университета",

number = "3",

}

RIS

TY - JOUR

T1 - Два этапа золото-сульфидной минерализации в раннепротерозойских габброидах Северного Приладожья

AU - Балтыбаев, Шаукет Каимович

AU - Овчинникова, Галина Владимировна

AU - Кузнецов, Антон Борисович

AU - Васильева, Ирина Михайловна

AU - Ризванова, Наиля Гаптрахмановна

AU - Алексеев, Иван Александрович

AU - Кириллова, Полина Алексеевна

PY - 2021/7/1

Y1 - 2021/7/1

N2 - In a study based on Pb isotopes, it has been shown that the formation of gold-sulfide mineralization in the Early Proterozoic gabbros of the Northern Ladoga region is associated with different tectonic phases. This conclusion is based on a comparative study of isotopic data for feldspars and lead sulfides in two Early Proterozoic intrusions; Velimäki and Alattu-Päkylä. The investigated intrusions have similar geological settings at the junction of the Svecofennian accretionary complex and the Karelian craton. Both massifs are characterized by manifestations of noble metal sulfide mineralization associated with zones of local shear deformations. The formation of the studied ore massifs is attributed to the Svecofennian and Caledonian tectonic stages. Feldspars of Velimäki intrusion have parameters and model age of Pb significantly older than U-Pb age of zircon (1.9 Ga), although they correspond to the Svecofennian time of magmatic crystallization of gabbro and clinopyroxenites, while sulfide pyrite-pyrrhotite mineralization is associated with gold in these rocks with the Caledonian stage of fluid-thermal processing of the Early Proterozoic magmatic mineral paracenteses. Feldspars and sulfides of the Alattu-Päkylä intrusion have similar lead isotopic parameters and Pb model age (~ 2 Ga), also somewhat older than the U-Pb age of zircon, but at the same time indicating the formation of rock-forming and ore sulfide associations with gold during the Svecofennian (Early Proterozoic) plutonic and tectonic-thermal events. The source of lead sulfides of the Velimäki massif is characterized by the parameters of the upper crust with high µ2 = 238U / 204Pb, while the µ2 parameter of the minerals of the Alattu-Päkylä massif is slightly lower, which indicates the participation of the mantle-lower crustal reservoir material in the formation of magma.

AB - In a study based on Pb isotopes, it has been shown that the formation of gold-sulfide mineralization in the Early Proterozoic gabbros of the Northern Ladoga region is associated with different tectonic phases. This conclusion is based on a comparative study of isotopic data for feldspars and lead sulfides in two Early Proterozoic intrusions; Velimäki and Alattu-Päkylä. The investigated intrusions have similar geological settings at the junction of the Svecofennian accretionary complex and the Karelian craton. Both massifs are characterized by manifestations of noble metal sulfide mineralization associated with zones of local shear deformations. The formation of the studied ore massifs is attributed to the Svecofennian and Caledonian tectonic stages. Feldspars of Velimäki intrusion have parameters and model age of Pb significantly older than U-Pb age of zircon (1.9 Ga), although they correspond to the Svecofennian time of magmatic crystallization of gabbro and clinopyroxenites, while sulfide pyrite-pyrrhotite mineralization is associated with gold in these rocks with the Caledonian stage of fluid-thermal processing of the Early Proterozoic magmatic mineral paracenteses. Feldspars and sulfides of the Alattu-Päkylä intrusion have similar lead isotopic parameters and Pb model age (~ 2 Ga), also somewhat older than the U-Pb age of zircon, but at the same time indicating the formation of rock-forming and ore sulfide associations with gold during the Svecofennian (Early Proterozoic) plutonic and tectonic-thermal events. The source of lead sulfides of the Velimäki massif is characterized by the parameters of the upper crust with high µ2 = 238U / 204Pb, while the µ2 parameter of the minerals of the Alattu-Päkylä massif is slightly lower, which indicates the participation of the mantle-lower crustal reservoir material in the formation of magma.

KW - Gabbroides

KW - Isotope composition of lead

KW - Ladoga area

KW - Sulfides

UR - http://www.scopus.com/inward/record.url?scp=85109433577&partnerID=8YFLogxK

U2 - 10.21638/spbu07.2021.307

DO - 10.21638/spbu07.2021.307

M3 - статья

AN - SCOPUS:85109433577

VL - 66

SP - 1

EP - 27

JO - Вестник Санкт-Петербургского университета. Науки о Земле

JF - Вестник Санкт-Петербургского университета. Науки о Земле

SN - 1812-9323

IS - 3

ER -

ID: 87993518