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190Pt-4He dating of platinum mineralization in Ural-Alaskan-type complexes in the Kamchatka region: evidence for remobilization of platinum-group elements. / Yakubovich, Olga; Kutyrev, Anton; Sidorov, Evgeniy et al.

In: Mineralium Deposita, Vol. 57, No. 5, 06.2022, p. 743-758.

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Yakubovich O, Kutyrev A, Sidorov E, Travin A. 190Pt-4He dating of platinum mineralization in Ural-Alaskan-type complexes in the Kamchatka region: evidence for remobilization of platinum-group elements. Mineralium Deposita. 2022 Jun;57(5):743-758. doi: 10.1007/s00126-022-01103-5

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Yakubovich, Olga ; Kutyrev, Anton ; Sidorov, Evgeniy et al. / 190Pt-4He dating of platinum mineralization in Ural-Alaskan-type complexes in the Kamchatka region: evidence for remobilization of platinum-group elements. In: Mineralium Deposita. 2022 ; Vol. 57, No. 5. pp. 743-758.

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@article{ed3e63c084624864945c0fa32d77a277,
title = "190Pt-4He dating of platinum mineralization in Ural-Alaskan-type complexes in the Kamchatka region: evidence for remobilization of platinum-group elements",
abstract = "Ural-Alaskan-type zonal mafic–ultramafic complexes are the predominant source of platinum-group minerals (PGM) in alluvial deposits worldwide. Processes responsible for the formation of mm-sized grains of Pt-Fe alloys within these deposits remain a subject of ongoing debate. In this study, the 190Pt-4He dating method is applied to isoferroplatinum from the Ural-Alaskan-type Matysken, Itchayvayam, and Filippa complexes of the Koryak-Kamchatka Platinum Belt in order to determine the timing of Pt mineralization and its relation to the regional and local geologic history of the source rocks. Results of 190Pt-4He dating indicate multistage Pt mineralization, with at least two generations recognized. The first generation (70 ± 2 Ma and 77 ± 2 Ma for the northern and southern parts of the Belt, respectively) is contemporaneous with intra-oceanic arc magmatism, which resulted in the formation of the dunite-clinopyroxenite complexes. The second generation is significantly younger (~ 64 Ma), and reflects a later mineralization or recrystallization event following the termination of active volcanism within the Olyutorsky Arc evolution.",
keywords = "Pt-He, Geochronology of ore-forming processes, Platinum-group minerals, Ural-Alaskan-type complexes, 190Pt-4He",
author = "Olga Yakubovich and Anton Kutyrev and Evgeniy Sidorov and Alexei Travin",
note = "Funding Information: This research was supported by the Russian Science Foundation (19–77-00097). Ar/Ar study was carried out within the framework of a State Assignment of Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk. 40 39 Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.",
year = "2022",
month = jun,
doi = "10.1007/s00126-022-01103-5",
language = "English",
volume = "57",
pages = "743--758",
journal = "Mineralium Deposita",
issn = "0026-4598",
publisher = "Springer-Verlag GmbH and Co. KG",
number = "5",

}

RIS

TY - JOUR

T1 - 190Pt-4He dating of platinum mineralization in Ural-Alaskan-type complexes in the Kamchatka region: evidence for remobilization of platinum-group elements

AU - Yakubovich, Olga

AU - Kutyrev, Anton

AU - Sidorov, Evgeniy

AU - Travin, Alexei

N1 - Funding Information: This research was supported by the Russian Science Foundation (19–77-00097). Ar/Ar study was carried out within the framework of a State Assignment of Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk. 40 39 Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

PY - 2022/6

Y1 - 2022/6

N2 - Ural-Alaskan-type zonal mafic–ultramafic complexes are the predominant source of platinum-group minerals (PGM) in alluvial deposits worldwide. Processes responsible for the formation of mm-sized grains of Pt-Fe alloys within these deposits remain a subject of ongoing debate. In this study, the 190Pt-4He dating method is applied to isoferroplatinum from the Ural-Alaskan-type Matysken, Itchayvayam, and Filippa complexes of the Koryak-Kamchatka Platinum Belt in order to determine the timing of Pt mineralization and its relation to the regional and local geologic history of the source rocks. Results of 190Pt-4He dating indicate multistage Pt mineralization, with at least two generations recognized. The first generation (70 ± 2 Ma and 77 ± 2 Ma for the northern and southern parts of the Belt, respectively) is contemporaneous with intra-oceanic arc magmatism, which resulted in the formation of the dunite-clinopyroxenite complexes. The second generation is significantly younger (~ 64 Ma), and reflects a later mineralization or recrystallization event following the termination of active volcanism within the Olyutorsky Arc evolution.

AB - Ural-Alaskan-type zonal mafic–ultramafic complexes are the predominant source of platinum-group minerals (PGM) in alluvial deposits worldwide. Processes responsible for the formation of mm-sized grains of Pt-Fe alloys within these deposits remain a subject of ongoing debate. In this study, the 190Pt-4He dating method is applied to isoferroplatinum from the Ural-Alaskan-type Matysken, Itchayvayam, and Filippa complexes of the Koryak-Kamchatka Platinum Belt in order to determine the timing of Pt mineralization and its relation to the regional and local geologic history of the source rocks. Results of 190Pt-4He dating indicate multistage Pt mineralization, with at least two generations recognized. The first generation (70 ± 2 Ma and 77 ± 2 Ma for the northern and southern parts of the Belt, respectively) is contemporaneous with intra-oceanic arc magmatism, which resulted in the formation of the dunite-clinopyroxenite complexes. The second generation is significantly younger (~ 64 Ma), and reflects a later mineralization or recrystallization event following the termination of active volcanism within the Olyutorsky Arc evolution.

KW - Pt-He

KW - Geochronology of ore-forming processes

KW - Platinum-group minerals

KW - Ural-Alaskan-type complexes

KW - 190Pt-4He

UR - http://www.scopus.com/inward/record.url?scp=85126314146&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/e7e29586-b02d-374e-873b-d8e3eb15d4bd/

U2 - 10.1007/s00126-022-01103-5

DO - 10.1007/s00126-022-01103-5

M3 - Article

AN - SCOPUS:85126314146

VL - 57

SP - 743

EP - 758

JO - Mineralium Deposita

JF - Mineralium Deposita

SN - 0026-4598

IS - 5

ER -

ID: 35705021