Facies and depositional environments of Injana formation in Zawita, Amadia and Zakho areas, northern Iraq
Other Title(s)
السحنات و البيئات الترسيبية لتكوين إنجانة في منطقة زاويتة و العمادية و زاخو، شمالي العراق
Joint Authors
Salman, Nur Anas
Tamar Agha, Mazin Yusuf
Source
Iraqi Bulletin of Geology and Mining
Issue
Vol. 11, Issue 3 (31 Dec. 2015), pp.39-60, 22 p.
Publisher
Ministry of Industry and Minerals Iraqi Geological Survey
Publication Date
2015-12-31
Country of Publication
Iraq
No. of Pages
22
Main Subjects
Earth Sciences, Water and Environment
History and Geography
Abstract EN
This study deals with facies analysis and depositional environments of Injana Formation (Upper Miocene) in Zawita, Amadiya and Zakho areas.
The lower part of the formation at Zakho and Zawita comprises reddish brown mudstone and greenish grey marl representing mudflats (transitional environments).
At Amadiya logged succession some coarsening upwards successions are recorded at the lower part representing deltaic environment.
The upper part, which is the major part, consists principally of repeated fining-upwards succession nested above each other in a general coarsening upwards in the sand fraction.
The Injana Formation comprises seven lithofacies which form eight facies associations.
Mudflats and deltaic facies association represent the transitional environments and are of relatively limited thickness and restricted to the lower part only of the formation.
Channel floor, point bar, chute and chute bars, abandoned channel, crevasse splay and interchannel floodbasin facies associations represent the high-sinuosity stream (meandering river) forming most of the upper part of the logged successions.
The fining-upwards succession starts with a scour surface at the base of current bedded fine to coarse sandstone with occasional intraformational conglomerates followed by mudstone.
In the logged successions, five basic architectural elements are identified: Downstream accretion, Lateral accretion, Floodplain fines, Crevasse splay and Abandoned channel elements.
Facies analysis revealed that the upper part of the Injana Formation represents fluviatile deposits basically meandering river system (high – sinuosity streams).
American Psychological Association (APA)
Tamar Agha, Mazin Yusuf& Salman, Nur Anas. 2015. Facies and depositional environments of Injana formation in Zawita, Amadia and Zakho areas, northern Iraq. Iraqi Bulletin of Geology and Mining،Vol. 11, no. 3, pp.39-60.
https://search.emarefa.net/detail/BIM-815409
Modern Language Association (MLA)
Tamar Agha, Mazin Yusuf& Salman, Nur Anas. Facies and depositional environments of Injana formation in Zawita, Amadia and Zakho areas, northern Iraq. Iraqi Bulletin of Geology and Mining Vol. 11, no. 3 (2015), pp.39-60.
https://search.emarefa.net/detail/BIM-815409
American Medical Association (AMA)
Tamar Agha, Mazin Yusuf& Salman, Nur Anas. Facies and depositional environments of Injana formation in Zawita, Amadia and Zakho areas, northern Iraq. Iraqi Bulletin of Geology and Mining. 2015. Vol. 11, no. 3, pp.39-60.
https://search.emarefa.net/detail/BIM-815409
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 58-59
Record ID
BIM-815409