Abstract
References
- Brown, W. L., 1960, The crystallographic and Petrografic significance of peristerite unmixing in the acid plagioclase: Z. Kristallog., 113, 330-344.
- 1962, Peristerite unmixing in the plagioclases and metamorphic facies series: Norsk Geol. Tidsskr., 42, 2. Halvbind (feldspar vol.), 354-382.
- Crawford, M. L., 1966, Composition of plagioclase and associated minerals in some schists from Vermont, U.S.A.
- and South Westland, New Zealand, with inferences about the peristerite solvus: Contr. Mineral. Petrol., 13, 269-294.
- Gay, P. ve Smith, J. V., 1955, Phase relations in the plagioclase feldspar: Composition range Ano to An70: Acta Cryst., 8, 64-65.
- Laves, F., 1954, The coexistence of two plagioclases in the oligoclase Composition range: J. Geol., 62, 409-411.
Abstract
Alaşehir'in 20 km güneyinde yer
alan Derbent bucağının 3 km doğusunda kahverengi, ortakaba taneli ve iyi
yapraklanmalı pelitik şistler izlenmektedir. Bu şistlerde almandin
granat+biyotit + muskovit+plajiyoklaz+kuvars+opak mineral parajenezi egemendir.
Plajiyoklazların mikroprob yöntemleriyle analizleri sonucunda bileşim
bakımından birbirlerinden .oldukça farklı iki plajiyoklaz türünün (An 0.7.0.9
ve An 26.6-27.5) bir porfiroblastta karışmamış olarak bulunduğu saptanmıştır
(Çizelge 1). Bu tür karışmamış plajiyoklazlara, «peristerit» denilmektedir (Crawford,
1966). Plajiyoklaz porfiroblastının içerdiği albit miktarının oligoklaz miktarına
oranı, bir numunede dahi taneden taneye farklılık göstermektedir. Albit ve
oligoklazın tanedeki dağılımı ise düzensizdir
Keywords
References
- Brown, W. L., 1960, The crystallographic and Petrografic significance of peristerite unmixing in the acid plagioclase: Z. Kristallog., 113, 330-344.
- 1962, Peristerite unmixing in the plagioclases and metamorphic facies series: Norsk Geol. Tidsskr., 42, 2. Halvbind (feldspar vol.), 354-382.
- Crawford, M. L., 1966, Composition of plagioclase and associated minerals in some schists from Vermont, U.S.A.
- and South Westland, New Zealand, with inferences about the peristerite solvus: Contr. Mineral. Petrol., 13, 269-294.
- Gay, P. ve Smith, J. V., 1955, Phase relations in the plagioclase feldspar: Composition range Ano to An70: Acta Cryst., 8, 64-65.
- Laves, F., 1954, The coexistence of two plagioclases in the oligoclase Composition range: J. Geol., 62, 409-411.
Details
| Primary Language | English |
|---|---|
| Subjects | Engineering |
| Journal Section | Articles |
| Authors | |
| Publication Date | September 1, 1979 |
| Published in Issue | Year 1979 Volume: 92 Issue: 92 |
Cite
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