Date of Award

2011-01-01

Degree Name

Master of Science

Department

Geological Sciences

Advisor(s)

Richard Langford

Second Advisor

Diane Doser

Abstract

The southern Tethys margin constitutes an important hydrocarbon reservoir. It is formed mainly of Nummulite rich facies of the Jdeir Formation deposited during the Eocene epoch (Late Ypresian age) in the giant El-Bouri oil field-Sabratah Basin-NW Libya. Deposits of the Jdeir Formation directly overlay the Jirani dolomite and Bilal Formation, and unconformably underlay the Tellil Group and Ghallil Formation.

Nummulite accumulations are good indicators for hydrocarbon studies and they have been targets for numerous studies around the world. Nummulite "Large foraminifera" tests are usually identified by two forms: A-form and B-form. Previous studies have highlighted many different aspects of foraminifers including taxonomy, test structure, test transport, abrasion, biofabric, climate, and ecological studies, and test morphology. However, previous studies have not studied in detail the distribution of A-form and B-form. This present study aims to use A/B Ratio distributions within facies and relate that to two aspects; depositional environments and physical processes. The present study will use a Minas`s chart which summaries the relationship between A/B ratio, depositional environment, and physical processes. In addition, classification of death assemblages will be evaluated to distinguish the physical processes.

This could provide insight into the vertical and lateral distribution of porosity and permeability, as well as understanding the relationships between Nummulite biofabrics and the physical processes. In addition, diagenesis processes will also be evaluated and examined within the Nummulittic texture of the Jdeir Formation.

Language

en

Provenance

Received from ProQuest

File Size

184 pages

File Format

application/pdf

Rights Holder

Abdusalam Ali Agail

Download

Included in

Geology Commons

Share

COinS