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CO2 Pulses and Previous HitFaultNext Hit Rupture, Gunnison Previous HitFaultNext Hit System, Central Utah

Joel Main
The Ohio State University School of Earth Science, 275 Mendenhall Laboratory, 125 South Oval Mall Columbus, Ohio 43210

In the Basin and Range Province (BRP) in central Utah a horst and graben structure is oriented perpendicular to the BRP’s N-S trending horst and graben blocks. The northern Previous HitfaultNext Hit (Rock Canyon Previous HitFaultNext Hit) of this anomalously oriented structure and its related faults rocks are being studied for Previous HitfaultNext Hit rupture and seal as a natural analogue for carbon capture and storage. The evolution of Rock Canyon Previous HitFaultNext Hit is shown through its rocks, travertine and breccias, and their structures. Two brecciation processes have formed the rocks observed: Previous HitfaultNext Hit void fill and explosive breccias. The structures in the rocks reveal a minimum of four alternating precipitation and brecciation events. Mapping the Rock Canyon Previous HitfaultNext Hit zone shows a lateral distribution of the composition and thickness of the Previous HitfaultNext Hit rocks. As Rock Canyon Previous HitFaultNext Hit progresses toward the Valley Previous HitFaultNext Hit (a BRP Previous HitfaultNext Hit) it thickens and changes from calcite to primarily travertine. The Rock Canyon Previous HitfaultNext Hit and Valley Previous HitfaultNext Hit (main fluid flow conduit) are therefore thought to meet or intersect. The Valley Previous HitfaultNext Hit is thought to intersect the Navajo formation (Providence oil field resevior) containing 81% carbon dioxide. To better understand Previous HitfaultNext Hit rupture and seal and how it relates to carbon capture and storage isotope analysis and more kinematic data needs to be collected on both the Rock Canyon Previous HitfaultNext Hit and Valley Previous HitfaultTop.

AAPG Search and Discovery Article #90183©2013 AAPG Foundation 2013 Grants-in-Aid Projects