Title

Analog Modeling of Tectonic Rifting: Extensional Structures Based on Stress Margin Width

Presenter Information

Allen Hooper

Department

Geosciences and Geological and Petroleum Engineering

Major

Geology/Geophysics

Research Advisor

Hogan, John Patrick

Advisor's Department

Geosciences and Geological and Petroleum Engineering

Abstract

It is observable that in regions where normal faulting has occurred, such as in basinand- range topography, grabens created by dropped blocks tend to be restricted in width, regardless of the distance between border faults. It is also notable that these rifts tend to be sub-parallel, and form a reticulated pattern over large areas. In our analog “sandbox experiment,” we will be replicating rift zones of various widths, and analyzing the formation and orientation of horst and graben features. Previous experiments have shown remarkably analogous results by varying rheology and thickness of strata materials. By modifying the width-to-depth ratio of the extentional zone, we expect to see multiple basin sets, and will study orientational relationships between horst margins.

Biography

Allen Cooper, a senior at Missouri S&T, is majoring in Geophysics and minoring in Mathematics. He is captain of the Miner Threat Ultimate Frisbee team, and hopes to work in the petroleum industry after graduation.

Research Category

Sciences

Presentation Type

Poster Presentation

Document Type

Poster

Location

Upper Atrium/Hallway

Presentation Date

07 Apr 2010, 9:00 am - 11:45 am

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Apr 7th, 9:00 AM Apr 7th, 11:45 AM

Analog Modeling of Tectonic Rifting: Extensional Structures Based on Stress Margin Width

Upper Atrium/Hallway

It is observable that in regions where normal faulting has occurred, such as in basinand- range topography, grabens created by dropped blocks tend to be restricted in width, regardless of the distance between border faults. It is also notable that these rifts tend to be sub-parallel, and form a reticulated pattern over large areas. In our analog “sandbox experiment,” we will be replicating rift zones of various widths, and analyzing the formation and orientation of horst and graben features. Previous experiments have shown remarkably analogous results by varying rheology and thickness of strata materials. By modifying the width-to-depth ratio of the extentional zone, we expect to see multiple basin sets, and will study orientational relationships between horst margins.