--> Abstract: Non-Seismic Geophysics Compared and Integrated with Seismic in a Frontier Oil Play: Northern Sangre de Cristo Mountains/Northeast San Luis Basin, Colorado, by M. B. Longacre, K. R. Christopherson, R. Gries, and T. A. Watkins; #90959 (1995).
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Abstract: Non-Previous HitSeismicNext Hit Geophysics Compared and Integrated with Previous HitSeismicNext Hit in a Frontier Oil Play: Northern Sangre de Cristo Mountains/Northeast San Luis Basin, Colorado

Mark B. Longacre, Karen R. Christopherson, Robbie Gries, Thomas A. Watkins

Four non-Previous HitseismicNext Hit geophysical tools have made a significant contribution to a new geological interpretation of the northern Sangre de Cristo Mountains/northeast San Luis Basin of south-central Colorado. Gravity, aeromagnetic, magnetotelluric (MT) and time domain electromagnetic (TDEM) Previous HitdataNext Hit were acquired and interpreted during the early stages of exploration.

Previous HitTwoNext Hit-Previous HitdimensionalNext Hit modeling of the gravity and magnetics placed the main, basin-bounding fault three miles southwest of the mountain front, identified an intermediate fault block at the basin margin and identified a thick sequence of non-magnetic, intermediate density rocks on top of this block. A thick section of Mesozoic sediments is interpreted, supported by the discovery of outcrops of Cretaceous sediments and live Cretaceous oil. Magnetotelluric Previous HitdataNext Hit was acquired to confirm the presence of Mesozoic sediments and depth to basement. Detailed TDEM Previous HitdataNext Hit has been useful in correlating the MT with surface geology. Integration of the gravity, magnetic and MT Previous HitdataNext Hit with Previous HitseismicTop resulted in minor modifications to the new geological model.

AAPG Search and Discovery Article #90959©1995 AAPG Rocky Mountain Section Meeting, Reno, Nevada