Clay mineral typing in the shale units of the Kaista and ora formations of north Iraq : implications for depositional environments
Other Title(s)
أنواع المعادن الطينية في وحدات السجيل لتكويني كاييستا و أورا من شمالي العراق : استعمالها في تفسير البيئة الترسيبية
Author
Source
The Iraqi Journal of Agricultural Science
Issue
Vol. 49, Issue 4 (31 Aug. 2018), pp.601-610, 10 p.
Publisher
University of Baghdad College of Agriculture
Publication Date
2018-08-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Earth Sciences, Water and Environment
Topics
Abstract EN
This paper reports the results of X-ray diffraction mineralogical and Scanning electron microscopic (SEM) studies of the shale units in the Devonian-early Carboniferous Kaista and Ora formations from northern Iraq.
The mineral composition is uniform throughout the studied succession, kaolinite, illite, chlorite, and palygorskite form the main clay mineral assemblage while quartz, feldspar, calcite and dolomite form the non-clay fraction of the studied shales.
Kaolinite dominates over illite in the Kaista shale, whereas, illite and chlorite with common palygorskite dominate over kaolinite in the Ora shale.
The clay mineral assemblage is largely of detrital origin and indicates rather cool and/or dry climatic conditions favouring mechanical erosion of the source rocks.
Palygorskite is of authigenic origin in evaporative conditions mostly in the subtidal Ora shales
American Psychological Association (APA)
al-Hazza, Sawsan Hamid. 2018. Clay mineral typing in the shale units of the Kaista and ora formations of north Iraq : implications for depositional environments. The Iraqi Journal of Agricultural Science،Vol. 49, no. 4, pp.601-610.
https://search.emarefa.net/detail/BIM-897635
Modern Language Association (MLA)
al-Hazza, Sawsan Hamid. Clay mineral typing in the shale units of the Kaista and ora formations of north Iraq : implications for depositional environments. The Iraqi Journal of Agricultural Science Vol. 49, no. 4 (2018), pp.601-610.
https://search.emarefa.net/detail/BIM-897635
American Medical Association (AMA)
al-Hazza, Sawsan Hamid. Clay mineral typing in the shale units of the Kaista and ora formations of north Iraq : implications for depositional environments. The Iraqi Journal of Agricultural Science. 2018. Vol. 49, no. 4, pp.601-610.
https://search.emarefa.net/detail/BIM-897635
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 610
Record ID
BIM-897635