Biostratigraphy and environmental reconstruction of the akashat formation (paleocene phosphatic sequence)‎, Western Desert, Iraq

Other Title(s)

الطباقية الحياتية و البيئة الترسيبية لتكوين عكاشات (تتابع الباليوسين الفوسفاتي)‎، الصحراء الغربية، العراق

Joint Authors

Muhammad, Sahirah Abd al-Karim
al-Kubaysi, Kifah Nuri

Source

Iraqi Bulletin of Geology and Mining

Issue

Vol. 16, Issue 2 (31 Dec. 2020), pp.1-20, 20 p.

Publisher

Ministry of Industry and Minerals Iraqi Geological Survey

Publication Date

2020-12-31

Country of Publication

Iraq

No. of Pages

20

Main Subjects

Earth Science , Water and Environment

Topics

Abstract EN

The exposure of the Paleocene sequence (Akashat Formation) in the Rutbah area is distributed in a relatively thin N – S strip extending from north of the Ga'ara depression down to the Iraqi – Saudi Arabian international border, and it is roughly 40 – 50 m thick, truncated east of the Ga'ara depression.

The Paleocene sequence, in its exposures north and west of Rutbah area, is phosphatic.

The biostratigraphy and depositional environment of the surface exposure of the sequence and that of borehole sections to the west of the exposure areas is studied in some detail in this work.

The Paleocene sequence is conformably overlain by the Eocene sequence throughout the exposed and subsurface sections (except in the eastern side of the Ga'ara depression).

The underlying sequence belongs to the Late Cretaceous with a hiatus of variable durations.

South of Rutbah – Amman highway the break is relatively shorter than that in the Akashat area, especially along the western and northern rims of the Ga'ara depression.

In boreholes to the west, the Paleocene sequence increases in thickness, the break with the underlying Late Cretaceous sequence may be negligible or missing.

The following planktonic zones are recorded from subsurface and surface sections:-

American Psychological Association (APA)

Muhammad, Sahirah Abd al-Karim& al-Kubaysi, Kifah Nuri. 2020. Biostratigraphy and environmental reconstruction of the akashat formation (paleocene phosphatic sequence), Western Desert, Iraq. Iraqi Bulletin of Geology and Mining،Vol. 16, no. 2, pp.1-20.
https://search.emarefa.net/detail/BIM-986097

Modern Language Association (MLA)

Muhammad, Sahirah Abd al-Karim& al-Kubaysi, Kifah Nuri. Biostratigraphy and environmental reconstruction of the akashat formation (paleocene phosphatic sequence), Western Desert, Iraq. Iraqi Bulletin of Geology and Mining Vol. 16, no. 2 (2020), pp.1-20.
https://search.emarefa.net/detail/BIM-986097

American Medical Association (AMA)

Muhammad, Sahirah Abd al-Karim& al-Kubaysi, Kifah Nuri. Biostratigraphy and environmental reconstruction of the akashat formation (paleocene phosphatic sequence), Western Desert, Iraq. Iraqi Bulletin of Geology and Mining. 2020. Vol. 16, no. 2, pp.1-20.
https://search.emarefa.net/detail/BIM-986097

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 17-20

Record ID

BIM-986097