Postcollisional age of the Kumtor gold deposit and timing of hercynian events in the Tien Shan, Kyrgyzstan

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Postcollisional age of the Kumtor gold deposit and timing of hercynian events in the Tien Shan, Kyrgyzstan. / Mao, Jingwen; Konopelko, Dmitry; Seltmann, Reimar; Lehmann, Bernd; Chen, Wen; Wang, Yitian; Eklund, Olav; Usubaliev, Toorat.

In: Economic Geology, Vol. 99, No. 8, 01.12.2004, p. 1771-1780.

Research output: Contribution to journal › Article › peer-review

Author

Mao, Jingwen ; Konopelko, Dmitry ; Seltmann, Reimar ; Lehmann, Bernd ; Chen, Wen ; Wang, Yitian ; Eklund, Olav ; Usubaliev, Toorat. / Postcollisional age of the Kumtor gold deposit and timing of hercynian events in the Tien Shan, Kyrgyzstan. In: Economic Geology. 2004 ; Vol. 99, No. 8. pp. 1771-1780.

BibTeX

@article{4d8ac79b23664cd7a010fbff4eb9f74c,

title = "Postcollisional age of the Kumtor gold deposit and timing of hercynian events in the Tien Shan, Kyrgyzstan",

abstract = "We report here 40Ar/ 39Ar whole-rock and sericite data for host-rock (sericite-quartz altered rock) and gold ore (pyrite-quartz-feldspar-carbonate) from the giant Kumtor gold deposit in the Tien Shan fold and thrust belt of Kyrgyzstan, one of the largest orogenic gold belts on Earth. Plateau ages for whole-rock samples of sericitequartz altered rock and sericite-bearing gold ore are 285.5 ± 1.2 and 288.4 ± 0.6 Ma. Sericite concentrates gave plateau ages of 284.3 ± 3.0 (host rock) and 285.4 ± 0.2 (ore) Ma. The age of minerali zation is slightly younger than a U-Pb zircon age of 296.7 ± 4.2 Ma obtained for the post-collisional Djangart granite, about 80 km southeast of Kumtor, and slightly older than two published U-Pb ages of 268 ± 1 and 280 ± 9 Ma on a posteollisional granite intrusion about 10 km west of Kumtor. These ages also overlap with data from the other major gold deposits of the 2,000-km-long southern Tien Shan fold and thrust belt. The ages define a late Paleozoic event of gold mineralization related to regional-scale fluid flow and granite magmatism controlled by transcrustal shear zones during the postcollisional stage.",

author = "Jingwen Mao and Dmitry Konopelko and Reimar Seltmann and Bernd Lehmann and Wen Chen and Yitian Wang and Olav Eklund and Toorat Usubaliev",

year = "2004",

month = dec,

day = "1",

doi = "10.2113/gsecongeo.99.8.1771",

language = "English",

volume = "99",

pages = "1771--1780",

journal = "Economic Geology",

issn = "0361-0128",

publisher = "Society of Economic Geologists, Inc",

number = "8",

}

RIS

TY - JOUR

T1 - Postcollisional age of the Kumtor gold deposit and timing of hercynian events in the Tien Shan, Kyrgyzstan

AU - Mao, Jingwen

AU - Konopelko, Dmitry

AU - Seltmann, Reimar

AU - Lehmann, Bernd

AU - Chen, Wen

AU - Wang, Yitian

AU - Eklund, Olav

AU - Usubaliev, Toorat

PY - 2004/12/1

Y1 - 2004/12/1

N2 - We report here 40Ar/ 39Ar whole-rock and sericite data for host-rock (sericite-quartz altered rock) and gold ore (pyrite-quartz-feldspar-carbonate) from the giant Kumtor gold deposit in the Tien Shan fold and thrust belt of Kyrgyzstan, one of the largest orogenic gold belts on Earth. Plateau ages for whole-rock samples of sericitequartz altered rock and sericite-bearing gold ore are 285.5 ± 1.2 and 288.4 ± 0.6 Ma. Sericite concentrates gave plateau ages of 284.3 ± 3.0 (host rock) and 285.4 ± 0.2 (ore) Ma. The age of minerali zation is slightly younger than a U-Pb zircon age of 296.7 ± 4.2 Ma obtained for the post-collisional Djangart granite, about 80 km southeast of Kumtor, and slightly older than two published U-Pb ages of 268 ± 1 and 280 ± 9 Ma on a posteollisional granite intrusion about 10 km west of Kumtor. These ages also overlap with data from the other major gold deposits of the 2,000-km-long southern Tien Shan fold and thrust belt. The ages define a late Paleozoic event of gold mineralization related to regional-scale fluid flow and granite magmatism controlled by transcrustal shear zones during the postcollisional stage.

AB - We report here 40Ar/ 39Ar whole-rock and sericite data for host-rock (sericite-quartz altered rock) and gold ore (pyrite-quartz-feldspar-carbonate) from the giant Kumtor gold deposit in the Tien Shan fold and thrust belt of Kyrgyzstan, one of the largest orogenic gold belts on Earth. Plateau ages for whole-rock samples of sericitequartz altered rock and sericite-bearing gold ore are 285.5 ± 1.2 and 288.4 ± 0.6 Ma. Sericite concentrates gave plateau ages of 284.3 ± 3.0 (host rock) and 285.4 ± 0.2 (ore) Ma. The age of minerali zation is slightly younger than a U-Pb zircon age of 296.7 ± 4.2 Ma obtained for the post-collisional Djangart granite, about 80 km southeast of Kumtor, and slightly older than two published U-Pb ages of 268 ± 1 and 280 ± 9 Ma on a posteollisional granite intrusion about 10 km west of Kumtor. These ages also overlap with data from the other major gold deposits of the 2,000-km-long southern Tien Shan fold and thrust belt. The ages define a late Paleozoic event of gold mineralization related to regional-scale fluid flow and granite magmatism controlled by transcrustal shear zones during the postcollisional stage.

UR - http://www.scopus.com/inward/record.url?scp=16444369026&partnerID=8YFLogxK

U2 - 10.2113/gsecongeo.99.8.1771

DO - 10.2113/gsecongeo.99.8.1771

M3 - Article

AN - SCOPUS:16444369026

VL - 99

SP - 1771

EP - 1780

JO - Economic Geology

JF - Economic Geology

SN - 0361-0128

IS - 8

ER -

ID: 41124180