Shear-hosted Gold Mineralization in Central Anatolian Metamorphic Massifs

Date

2022-9-13

Author

Onat, Kaan
Kaymakcı, Nuretdin
Kuşcu, İlkay
Yalçıntaş, Hakan
Kaskatı, Mustafa Tuna

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

300
views

0
downloads

Niğde Massif (South-central Turkey) is a metamorphic core complex composed of amigmatite-paragneiss basement, overlain by schist-marble-amphibolite alternation and a thickmarble sequence. The massif experienced peak pressure-temperature conditions of >725 ℃and ∼16-20 km at the age of ∼ 91 Ma, which led to the partial melting of continental crustand generation of a subsequent intrusion of the crustal-derived Üçkapılı Granite and dike/sillarrays into the massif.The field studies led to three distinct mineralization sites: (i) along the low-angle faultsat schist-marble contacts, (ii) within the high-angle cataclastic shear zones in schist layers, and(iii) in between the foliation planes of schists.A common association of intrusive bodies with mineralized shear zones implies thatintrusion might have played a role in transporting or remobilizing the ore via a hydrothermalfluid. Discrete shear zones and associated foliation planes are used as fluid pathways and hosts.Structural relationships between brittle and ductile structures and the Au-Hg-As-Sb-Pbparagenesis indicate that these deposits can be classified as orogenic gold deposits. However,considering that these deposits are accumulated during the exhumation of the metamorphicunits, the absence of meso/macro scale mineralized quartz veins/veinlets contradicts theclassical models proposed for the development of the Precambrian orogenic gold deposits.

URI

https://secureservercdn.net/160.153.138.203/f7y.24c.myftpupload.com/wp-content/uploads/2022/09/SMRS2022_AbstractBook_F.pdf
https://hdl.handle.net/11511/100296

Conference Name

Sustainable Mineral Resources Supply: Challenges for Future Generations

Collections

Department of Geological Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Metamorphism in the Palaeozoic schists of the Southern Menderes Massif field petrographic textural and fabric data from Selimiye Milas Muğla area Bozkurt, Erdin (1996-01-01) Abstract: The Menderes Massif is a large-scale metamophic core-complex in western Anatolia and forms the western of two large metamorphic culminations in the Turkish Alpide orogen. Within the Southern Menderes Massif on the southern side of the Beßparmak Mountain north of Selimiye (Milas-MuÛla), two distinct lithologic groups are recognized on the basis of their lithology and structural position: the late Oligocene granitoid rocks now in the form of mylonitic augen gneiss and the structurally overlying sequ...
Extrusive members of postcollisional A-type magmatism in Central Anatolia: Karahidir Volcanics, Idis Dagi-Avanos Area, Turkey Koksal, S; Göncüoğlu, Mehmet Cemal; Floyd, PA (2001-08-01) The Idis Dagi Igneous Complex is one of a number of late-stage plutonic bodies within the Central Anatolian Crystalline Complex. It intrudes Paleozoic-Mesozoic metamorphic basement rocks and Late Cretaceous granitoids. The complex comprises mainly quartz syenites and alkali-feldspar quartz syenites known as the Idis Dagi Syenitoids.
Biostratigraphy of Lower Permian foraminiferal assemblages from platform-slope carbonate blocks within the Mersin Melange, southern Turkey: Paleogeographical implications Okuyucu, Cengiz; TEKİN, UĞUR KAĞAN; Bedi, Yavuz; Sayıt, Kaan (2020-04-01) The Mersin Melange (MM) as a part of the Mersin Ophiolitic Complex in southern Turkey is a sedimentary complex including blocks and tectonic slices within a Late Cretaceous matrix. Two blocks (Keven and Cingeypinari) within the MM originated from the northern branch of Neotethys (Izmir-Ankara-Erzincan Ocean) and have been studied in detail using foraminiferal assemblages to correlate them with coeval successions in the Taurides and to approach the Early Permian evolution of the northern branch of the Neotet...
Rapid cooling history of a Neotethyan ophiolite: Evidence for contemporaneous subduction initiation and metamorphic sole formation PARLAK, OSMAN; Dunkl, Istvan; KARAOĞLAN, FATİH; Kusky, Timothy M.; Zhang, Chao; Wang, Lu; Koepke, Juergen; Billor, Zeki; Hames, Willis E.; ŞİMŞEK, EMRAH; Simsek, Gokce; ŞİMŞEK, TUĞÇE; Ozturk, Selena Ezgi (Geological Society of America, 2019-11-01) The Beywhir-Hoyran Nappes, including Mesozoic carbonate platform rocks, deepsea sediments, and ophiolite-related units, crop out extensively on the western limb of the Isparta Angle in the Central Taurides, Turkey. The ophiolite-related rocks are represented by variably serpentinized harzburgitic mantle tectonites, tectonically underlain by a subophiolitic metamorphic sole and melange. The harzburgitic mantle tectonites and metamorphic sole are intruded by undeformed isolated dikes. Protoliths of the metamo...
Uppermost Triassic limestone in the Karakaya Complex - Stratigraphic and tectonic significance Okay, AI; Altıner, Demir (2004-05-01) Two important tectonostratigraphic units of the Karakaya Complex in northwest Turkey are: a lower metamorphic sequence of metabasite, phyllite and marble, called the Nilufer Unit; and an upper clastic sequence with Permian and Carboniferous limestone olistoliths called the Hodul Unit. In northwestern Turkey, the Hodul Unit consists of arkosic sandstones, which pass upward into greywacke and siltstone with Permian and Carboniferous limestone blocks. A scarce macrofauna in the sandstones indicates a Norian ag...

Citation Formats

K. Onat, N. Kaymakcı, İ. Kuşcu, H. Yalçıntaş, and M. T. Kaskatı, “Shear-hosted Gold Mineralization in Central Anatolian Metamorphic Massifs,” presented at the Sustainable Mineral Resources Supply: Challenges for Future Generations, Geneve, İsviçre, 2022, Accessed: 00, 2022. [Online]. Available: https://secureservercdn.net/160.153.138.203/f7y.24c.myftpupload.com/wp-content/uploads/2022/09/SMRS2022_AbstractBook_F.pdf.