Precambrian gold mineralization at Djamgyr in the Kyrgyz Tien Shan: Tectonic and metallogenic implications

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Details zur Publikation

Autorinnen und Autoren: Konopelko D, Klemd R, Petrov S, Apayarov F, Nazaraliev B, Vokueva O, Scherstén A, Sergeev S
Zeitschrift: Ore Geology Reviews
Jahr der Veröffentlichung: 2017
Band: 86
Seitenbereich: 537-547
ISSN: 0169-1368
Sprache: Englisch


Abstract

The Djamgyr gold deposit is located within the Neoproterozoic basement of the Middle Tien Shan terrane immediately west of the Talas-Fergana fault. The deposit comprises a system of auriferous quartz veins cross-cutting the Beshtor plagiogranite. The veins are surrounded by hydrothermal alteration aureoles and are oriented parallel to the Talas-Fergana fault. The Beshtor granite sampled in the vicinity of the deposit yielded a Neoproterozoic (Tonian) U-Pb zircon age of 815 ± 6 Ma, which is the first single grain zircon age of the Middle Tien Shan basement west of the Talas-Fergana fault. Ar-Ar dating of two muscovite fractions from the alteration aureoles of the auriferous quartz veins yielded ages of 804 ± 3 and 805 ± 3 Ma suggesting that the mineralization in the Djamgyr deposit occurred during the Neoproterozoic ca. 10 m.y. after emplacement of the Beshtor granite. The structural pattern of the auriferous quartz veins and the new geochronological data, combined with the results of previous structural studies, may tentatively constrain the age of pre-existing major fault possibly marking an inherited terrane boundary in the northern part of the present-day Talas-Fergana strike-slip fault. The discovery of Precambrian gold mineralization in the Middle Tien Shan suggests re-evaluation of the metallogenic potential of its Precambrian basement that occupies significant areas west and east of the Talas-Fergana fault.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Klemd, Reiner Prof. Dr.
Professur für Geochemie und Lagerstättenkunde


Einrichtungen weiterer Autorinnen und Autoren

Lund University / Lunds universitet
Saint Petersburg State University (SPbU) / Санкт-Петербургский государственный университет (СПбГУ)


Zitierweisen

APA:
Konopelko, D., Klemd, R., Petrov, S., Apayarov, F., Nazaraliev, B., Vokueva, O.,... Sergeev, S. (2017). Precambrian gold mineralization at Djamgyr in the Kyrgyz Tien Shan: Tectonic and metallogenic implications. Ore Geology Reviews, 86, 537-547. https://dx.doi.org/10.1016/j.oregeorev.2017.03.007

MLA:
Konopelko, Dmitry, et al. "Precambrian gold mineralization at Djamgyr in the Kyrgyz Tien Shan: Tectonic and metallogenic implications." Ore Geology Reviews 86 (2017): 537-547.

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Zuletzt aktualisiert 2019-06-06 um 11:10