Title

The Nature of the Contact of the Khoman Chalk Formation and Dahkla Formation at Gebel Gunna near Farafra, Egypt

Presenter Information

Patricia Williams

Department

Geosciences and Geological and Petroleum Engineering

Major

Geology and Geophysics

Research Advisor

Hogan, John Patrick

Advisor's Department

Geosciences and Geological and Petroleum Engineering

Funding Source

National Science Foundation

Abstract

The contact between the Khoman Chalk and the Dahkla formations has been reported as a sharp depositional contact. The contact is well exposed on Gebel Gunna (Farafra, Egypt) where a recent field investigation identified six different cycles of inter-fingering between the Khoman and the Dahkla Formation, indicative of a gradational contact. To better understand this transition, samples collected across this zone will be investigated using X-ray Diffraction (XRD). This will quantify the variation in clay content of the rock types as a function of stratigraphic sequence. This information will be used to better constrain the inter-fingering depositional nature of the contact and help construct more accurate model for the change in the environment of deposition.

Biography

Patricia is a senior in Geology and Geophysics. She worked as a student teaching assistant in Structural Geology and as an interpretive guide at Onondaga Cave State Park. She plans to attend graduate school focusing in sedimentology and stratigraphy.

Research Category

Sciences

Presentation Type

Poster Presentation

Document Type

Poster

Location

Upper Atrium/Hallway

Presentation Date

10 Apr 2012, 9:00 am - 11:45 am

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Apr 10th, 9:00 AM Apr 10th, 11:45 AM

The Nature of the Contact of the Khoman Chalk Formation and Dahkla Formation at Gebel Gunna near Farafra, Egypt

Upper Atrium/Hallway

The contact between the Khoman Chalk and the Dahkla formations has been reported as a sharp depositional contact. The contact is well exposed on Gebel Gunna (Farafra, Egypt) where a recent field investigation identified six different cycles of inter-fingering between the Khoman and the Dahkla Formation, indicative of a gradational contact. To better understand this transition, samples collected across this zone will be investigated using X-ray Diffraction (XRD). This will quantify the variation in clay content of the rock types as a function of stratigraphic sequence. This information will be used to better constrain the inter-fingering depositional nature of the contact and help construct more accurate model for the change in the environment of deposition.