Petrology of the granitoid intrusions in the Shalair valley area, northeastern Iraq
Other Title(s)
بترولوجية مقحمات الصخور الكرانيتويدية في وادي الشلير، شمال شرق العراق
Joint Authors
Hadi, Aytin
Abd al-Zahrah, Imad Kazim
Source
Issue
Vol. 58, Issue 1A (31 Mar. 2017), pp.88-102, 15 p.
Publisher
University of Baghdad College of Science
Publication Date
2017-03-31
Country of Publication
Iraq
No. of Pages
15
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
The granitoid bodies in the Shalair Valley are structurally located within so- called Iraqi Zagros Suture Zone, in the northeastern Iraq.
One hundred and sixty-two representative samples were collected from five granitoid intrusive bodies in the valley: Aulan and Siristan in the northern part, Mishao and Laladar in the southern part and Demamna in the western part.
Two major types of granitoids in the eastern and western part of the Shalair Valley area were indentified.
The granitoids from the four locations in the eastern part, have similar mineral constitutes.
These rocks are composed of plagioclase + quartz ± hornblende with two types of texture, equigranular texture represented by Aulan and Siristan in the northern part and porphyritic texture in the southern part represented by Mishao and Laladar.
This reflects several stages of intrusive events, starting with stable fractional crystallization conditions represented by Aulan and Siristan granitic rocks with equigranular texture and a late stage of unstable crystallization conditions represented by Mishao and Laladar granitic rocks with porphyritic texture.
Damamna granites in the western part have different mineral composition.
They are composed of K-feldspar, quartz and small amount of plagioclase with graphic texture represented by the intergrowth between K-feldspar and quartz, which reflects simultaneous crystallization of K-feldspar and quartz from a silicate melt close to the eutectic point.
American Psychological Association (APA)
Abd al-Zahrah, Imad Kazim& Hadi, Aytin. 2017. Petrology of the granitoid intrusions in the Shalair valley area, northeastern Iraq. Iraqi Journal of Science،Vol. 58, no. 1A, pp.88-102.
https://search.emarefa.net/detail/BIM-732895
Modern Language Association (MLA)
Abd al-Zahrah, Imad Kazim& Hadi, Aytin. Petrology of the granitoid intrusions in the Shalair valley area, northeastern Iraq. Iraqi Journal of Science Vol. 58, no. 1A (2017), pp.88-102.
https://search.emarefa.net/detail/BIM-732895
American Medical Association (AMA)
Abd al-Zahrah, Imad Kazim& Hadi, Aytin. Petrology of the granitoid intrusions in the Shalair valley area, northeastern Iraq. Iraqi Journal of Science. 2017. Vol. 58, no. 1A, pp.88-102.
https://search.emarefa.net/detail/BIM-732895
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 101-102
Record ID
BIM-732895