Hovakimyan, Samvel, Moritz, Robert, Tayan, Rodrik, Melkonyan, Rafael, Harutyunyan, Marianna (2019) Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt. Economic Geology, 114 (7) 1301-1337 doi:10.5382/econgeo.4662
Reference Type | Journal (article/letter/editorial) | ||
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Title | Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt | ||
Journal | Economic Geology | ||
Authors | Hovakimyan, Samvel | Author | |
Moritz, Robert | Author | ||
Tayan, Rodrik | Author | ||
Melkonyan, Rafael | Author | ||
Harutyunyan, Marianna | Author | ||
Year | 2019 (November 1) | Volume | 114 |
Page(s) | 1301-1337 | Issue | 7 |
Publisher | Society of Economic Geologists | ||
DOI | doi:10.5382/econgeo.4662Search in ResearchGate | ||
Mindat Ref. ID | 224445 | Long-form Identifier | mindat:1:5:224445:1 |
GUID | 7c39207d-6f75-4900-a866-5a84cc171984 | ||
Full Reference | Hovakimyan, Samvel, Moritz, Robert, Tayan, Rodrik, Melkonyan, Rafael, Harutyunyan, Marianna (2019) Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt. Economic Geology, 114 (7) 1301-1337 doi:10.5382/econgeo.4662 | ||
Plain Text | Hovakimyan, Samvel, Moritz, Robert, Tayan, Rodrik, Melkonyan, Rafael, Harutyunyan, Marianna (2019) Cenozoic Strike-Slip Tectonics and Structural Controls of Porphyry Cu-Mo and Epithermal Deposits During Geodynamic Evolution of the Southernmost Lesser Caucasus, Tethyan Metallogenic Belt. Economic Geology, 114 (7) 1301-1337 doi:10.5382/econgeo.4662 | ||
In | (2019, November) Economic Geology Vol. 114 (7) Society of Economic Geologists | ||
Abstract/Notes | Abstract The Zangezur-Ordubad mining district of the southernmost Lesser Caucasus is located in the central segment of the Tethyan metallogenic belt and consists of porphyry Cu-Mo and epithermal Au and base metal systems hosted by the composite Cenozoic Meghri-Ordubad pluton. Ore-hosting structures and magmatic intrusions are predominantly confined to a central N-S–oriented corridor 40 km long and 10 to 12 km wide, located between two regional NNW-oriented right-lateral faults, the Khustup-Giratagh and Salvard-Ordubad faults. The anatomy and kinematics of the main fault network are consistent with dextral strike-slip tectonics controlled by the NNW-oriented Khustup-Giratagh and Salvard-Ordubad faults. Dextral strike-slip tectonics was initiated during the Eocene, concomitantly with final subduction of the Neotethys, and controlled the emplacement of the Agarak, Hanqasar, Aygedzor, and Dastakert porphyry Cu-Mo and Tey-Lichkvaz and Terterasar epithermal Au and base metal deposits. The Eocene structures were repeatedly reactivated during subsequent Neogene evolution in transition to a postsubduction geodynamic setting. Ore-bearing structures at the Oligocene world-class Kadjaran porphyry Cu-Mo deposit were also controlled by dextral strike-slip tectonics, as well as porphyry mineralization and its epithermal overprint hosted by an early Miocene intrusion at Lichk. Eocene to early Miocene dextral strike-slip tectonics took place during NE- to NNE-oriented compression related to Paleogene Eurasia-Arabia convergence and subsequent Neogene postcollision evolution. Paleostress reconstruction indicates major reorganization of tectonic plate kinematics since the early Miocene, resulting in N-S– to NW-oriented compression. Early Miocene epithermal overprint at the Kadjaran porphyry deposit and left-lateral reactivation of faults and mineralized structures are linked to this late Neogene tectonic plate reorganization. |
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