Scholarly record
BEHAVIOR OF THE MAFIC MINERALS WITHIN THE DIFFERENT SOURCE OF MAGMA FOR IMPLICATION NATURE, THERMOBAROMETRY, DEPTH AND TECTONIC SETTINGS
Abstract
Nomenclature and chemistry of mafic minerals such as pyroxene, amphibole, and mica within the felsic and mafic igneous components have important role in the identification of the nature of the magma. The different compositions with the different proportions of the mineral chemistry reflects their, thermobarometry, emplacement depth and tectonic setting with the relation to their Fe, Mg, Al and Ti contents. Pyroxene, amphibole and mica behavior are selected from the shoshonotic, silica saturated alkaline and silica undersaturated alkaline magma nature from the Central Anatolia, Turkey. Central Anatolia are defined as a case study area for their paper because of hosting the products of calcalkaline, tholeiitic, shoshonotic, silica saturated alkaline and silica undersaturated alkaline magmas. In accordance with these purposes, we have carried out detailed petrographic, Confocal Raman Spectroscopy (CRS), mineral chemistry (EPMA) and whole rock geochemical studies of the rocks in the Central Anatolia in order to provide a clear data set with magma character, magma nature with the depth of the depth of the emplacement within the Central Anatolia. According to the CRS studies, pyroxene minerals from silica undersatured rocks are diopsite whereas others which are within the shoshonotic rocks are generally augite in composition. Amphibole minerals are mostly actinolite in composition with Raman Shifts in 157 cm-1, 184 cm-1, 222 cm-1, 541 cm-1, 665 cm-1and 970 cm-1. Type of the mica minerals are biotite in shoshonotic rocks whereas phlogopite in silica undersatured alkaline rocks. The Electron Prop Micro Analyses (EPMA) data from mafic minerals reveal that Ti, Fe, and Ca contents of pyroxene minerals are increase from shoshonotic nature towards silica undersaturated alkaline character. The Mg content of amphibole minerals increases whereas Fe and Al contents are decreases from shoshonotic, silica saturated alkaline towards silica undersaturated alkaline behavior rocks. The mica minerals from silica undersaturated rocks have highest F, Mg and K contents with respect to the Ti, Fe, Al. The contents of Ti, Fe and Al within the micas of the silica undersaturated rocks are higher than the shoshonotic nature rocks.
Publication Impact Profile
Publication details
References15
Göncüoğlu, M.C., Toprak, V., Kuşcu, İ., Erler, A., Olgun, E., Orta Anadolu Masifinin Batı Bölümünün Jeolojisi, Bölüm 1-Güney Kesim, Tpao Rapor No, 2909, pp 140, 1991 (unpublished).
Kadıoğlu, Y.K., Dilek, Y., Foland, K.A., Slab break-off and syncollisional origin of the Late Cretaceous magmatism in the Central Anatolian crystalline complexs, Geological Society of America, 409, pp 381-415, 2006.
Otlu, N. and Boztuğ, D., The Coexistence of the Silica Oversaturated (ALKOS) and Undersaturated Alkaline (ALKUS) Rocks in the Kortundağ and Baranadağ Plutons from the Central Anatolian Alkaline Plutonism, E Kaman/NW Kırşehir, Turkey, Turkish Journal of Earth Sciences, 7, pp 241–257, 1998.
Kadıoğlu, Y. K. and Güleç, N., Types and genesis of the enclaves in central Anatolian granitoid, Geological Journal. Geol. J., 34, pp 243-256, 1999.
Foster, M.D., Interpretation of composition of trioctaheral micas, U. S. Geol. Surv. Prof. Pap. 354B, pp 1–49, 1960.
Shuang Li, Xiaoyong Yang, YuHuang, Weidong Sun, Petrogenesis and mineralization of the Fenghuangshan skarn Cu–Au deposit, Tongling ore cluster field. Lower Yangtze metallogenic belt. Ore Geology Reviews 58, pp 148–162, 2014.
Deer, W.A., Howie, A., Zussman, J., An Introduction to rock-forming minerals. 17th. Longman Ltd., 1992.
Giret, A., Bonin, B., and Leger, J.M., Amphibole compositional trends in oversaturated and undersaturated alkaline plutonic ring-complexes. Canadian Mineralogist, 18, pp 481-495, 1980.
Leake, B.E., A.R. Woolley, C.E.S. Arps, W.D. Birch and M.C. Gilbert et al., Nomenclature of amphiboles: Report of the subcommittee on amphiboles of the International Mineralogical Association, Commission on new minerals and mineral names. Can. Mineral., 35, pp 1019-1037, 1997.
Morimoto, N., Fabries, J., Ferguson, A.K., Ginzburg, I.V., Ross, M., Seifert, F.A., Zussman, J., Aoki, K. and Gottardi, D., Nomenclature of pyroxenes. Am. Min., 62, pp 53-62, 1988.
Luhr, J.F., Carmichael, I.S.E., Varekamp, J.C., The 1982 eruptions of El Chichón volcano. Chiapas. Mexico: mineralogy and petrology of the anhydrite-bearing pumices, J Volcanol Geotherm Res, 23, pp 69–108, 1984.
Henry, D.J., Guidotti, C.V., Thomson, J.A., The Ti-saturation surface for low-to medium pressure metapelitic biotites: implications for geothermometry and Ti-substitution mechanisms, Am. Mineral., 90, pp 316–328, 2005.
Schmidt, M.W., Amphibole composition in tonalite as a function of pressure: An experimental calibration of the AI-in-hornblende barometer. Con. Mineral. Petrol., 110, pp 304-310, 1992.
Lindsley, D.H., Pyroxene thermometry. Am Mineral 68, pp 477–493, 1983).
Uchida, E., Endo, S., Makino, M., Relationship Between Solidification Depth of Granitic Rocks and Formation of Hydrothermal Ore Deposits, Resource Geology, 571–1, pp 47–56, 2007.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
