Identification and characterization of two new obsidian sub-sources in the Nemrut volcano (Eastern Anatolia, Turkey): The Sicaksu and Kayacik obsidian

Robin A. K., Mouralis D., Akkopru E., Gratuze B., Kuzucuoğlu C., Nomade S., ...Daha Fazla

JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS, cilt.9, ss.705-717, 2016 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.jasrep.2016.08.048
  • Dergi Adı: JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.705-717
  • Anahtar Kelimeler: Obsidian, Nemrut, Obsidian sources, Eastern Turkey, Geochemistry, DECAY CONSTANTS, SANIDINE, GEOCHRONOLOGY, STANDARD, STRATOVOLCANO, STRATIGRAPHY, EVOLUTION, IMPACT, PART, AGE
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

In the framework of the GeObs project (http://geobs.univ-rouen.fr), we performed an exhaustive field study of obsidian lava out cropping of the Nemrut volcano (Eastern Anatolia, Turkey). The macroscopic facies and the chemical characteristics of all sub-sources are presented and compared to each other. The Nemrut sub-sources are distinguishable using microscopic facies and geochemistry (LA-ICP-MS) data. We identify and characterize two previously unknown outcrops (Sicaksu and Kayacik) both located in the western part of the volcano. Only one of these two sub-sources, which is located near the Sicaksu village, provides good quality obsidian for knapping. Ar-40/Ar-39 dating of this sub-source reveals an age of 203 +/- 18 ka. It thus belongs to the early pre-caldera stage of the Nemrut volcano. Chemical analyses and comparison of datasets composed of results from (i) all Nemrut sub-sources sampled, and (ii) various artefacts presented in Khalidi et al. (this volume) and attributed to the Nemrut volcano, clearly match these artefacts to the Sicaksu outcrop.