1. Compositional Variations, Zoning Types and Petrogenetic Implications of Low-pressure Clinopyroxenes in the Neogene Alkaline Volcanic Rocks of Northeastern Turkey
- Author
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Aydin, Faruk, Karsli, Orhan, Sadiklar, M. Burhan, 0-Belirlenecek, and [Aydin, Faruk] Nigde Univ, Dept Geol Engn, TR-51200 Nigde, Turkey -- [Karsli, Orhan] Gumushane Univ, Dept Geol Engn, TR-29000 Gumushane, Turkey -- [Sadiklar, M. Burhan] Karadeniz Tech Univ, Dept Geol Engn, TR-61080 Trabzon, Turkey
- Subjects
low-pressure ,alkaline volcanics ,clinopyroxene ,zoning ,eastern Pontides ,Northeastern Turkey - Abstract
WOS: 000266902800001, Clinopyroxene phenocrysts and microphenocrysts in different series of the Neogene alkaline volcanic rocks from the eastern Pontides (NE Turkey) record various stages in the crystallization conditions and evolution history of the alkaline melt as well as its origin. Crystal chemical studies reveal that the clinopyroxenes in each rock series show strong textural and compositional similarities, which all reflect a common petrogenetic affinity. They have relatively high Mg-numbers (0.68-0.95), variable Al(2)O(3) (1.3-9.6 wt%), low TiO(2) (, Karadeniz Technical University; Deutscher Akademischer Austauschdienst (DAAD), This work, produced partially from the corresponding author's PhD Thesis, was fully supported by the Scientific Research Projects Funding Center of Karadeniz Technical University, and by a grant from Deutscher Akademischer Austauschdienst (DAAD). The authors would like to give special thanks to Rainer Altherr (Mineralogisches Institut, Universitat Heidelberg, Germany) for his permission to use the electron microprobe. Hans-Peter Meyer (Mineralogisches Institut, Universitat Heidelberg, Germany) and Gultekin Topuz (Eurasia Institute of Earth Sciences, Istanbul Technical University, Turkey) are thanked for their assistance with electron microprobe analyses. Many thanks are given to Peter Moller and Peter Dulski (GeoForschungsZentrum, German Research Centre for Geosciences, Potsdam, Germany) for the trace element and REE analyses. The authors also thank the referees who are Fatma Toksoy Koksal and two anonymous scientists for their precious and kind contributions to improve the quality of the paper. The English of the final text is edited by John A. Winchester.
- Published
- 2009