Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska

Craddock, William H.; Buursink, Marc L.; Covault, Jacob A.; Brennan, Sean T.; Doolan, Colin A.; Drake, Ronald M.; Merrill, Matthew D.; Roberts-Ashby, Tina L.; Slucher, Ernie R.; Warwick, Peter D.; Blondes, Madalyn S.; Freeman, Philip A.; Cahan, Steven N.; DeVera, Christina A.; Lohr, Celeste D.

doi:10.3133/ofr20121024i

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Lower Ellesmerian Sau C50010103 and Lower Ellesmerian Deep S1

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“…Most porosity in the Lisburne Group is secondary resulting from dissolution, karstification, and dolomitization (Wood and Armstrong, 1975;Jameson, 1994;Dumoulin and others, 2004). However, because secondary porosity development is at least partly related to beveling of the LCU, porosity tends to decrease south of Prudhoe Bay, especially into the area that encompasses the Lower Ellesmerian Deep SAU.…”

Section: Lower Ellesmerian Sau C50010103 and Lower Ellesmerian Deep Smentioning

confidence: 99%

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources—Alaska North Slope and Kandik Basin, Alaska

Craddock¹,

Buursink²,

Covault³

et al. 2014

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Section: Lower Ellesmerian Sau C50010103 and Lower Ellesmerian Deep Smentioning

confidence: 99%

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources—Alaska North Slope and Kandik Basin, Alaska

Craddock¹,

Buursink²,

Covault³

et al. 2014

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Late Oligocene to present contractional structure in and around the Susitna basin, Alaska—Geophysical evidence and geological implications

et al. 2016

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The Cenozoic Susitna basin lies within an enigmatic lowland surrounded by the Central Alaska Range, Western Alaska Range (including the Tordrillo Mountains), and Talkeetna Mountains in south-central Alaska. Some previous interpretations show normal faults as the defining structures of the basin (e.g., Kirschner, 1994). However, analysis of new and existing geophysical data shows predominantly (Late Oligocene to present) thrust and reverse fault geom etries in the region, as previously proposed by Hackett (1978). A key example is the Beluga Mountain fault where a 50-mGal gravity gradient, caused by the density transition from the igneous bedrock of Beluga Mountain to the >4-km-thick Cenozoic sedimentary section of Susitna basin, spans a horizontal distance of ~40 km and straddles the topographic front. The location and shape of the gravity gradient preclude a normal fault geometry; instead, it is best explained by a southwest-dipping thrust fault, with its leading edge located several kilometers to the northeast of the mountain front, concealed beneath the shallow glacial and fluvial cover deposits. Similar contractional fault relationships are observed for other basin-bounding and regional faults as well. Contractional structures are consistent with a regional shortening strain field inferred from differential offsets on the Denali and Castle Mountain right-lateral strike-slip fault systems.

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Geologic framework for the national assessment of carbon dioxide storage resources: Alaska North Slope and Kandik Basin, Alaska

Cited by 2 publications

References 29 publications

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources—Alaska North Slope and Kandik Basin, Alaska

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources—Alaska North Slope and Kandik Basin, Alaska

Late Oligocene to present contractional structure in and around the Susitna basin, Alaska—Geophysical evidence and geological implications

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