Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska
The Ikpikpuk-Umiat basin of Alaska's North Slope accumulated ~ 30,000' of clastic and carbonate strata during regional extension or transtension from the Late Devonian-Permian. However, this investigation confirms that low-intensity compressional shortening formed east-west trending fault...
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ftsandiegostateu:oai:drupal-site.org:sdsu_4893 2023-05-15T17:40:12+02:00 Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska Fulk, Bryant Robert (author) Geological Sciences (department) Mellors, Robert Girty, Gary Edwards, Robert North America - United States - Alaska Northlimit=71.333333; Westlimit=-159.000000; Eastlimit=-152.000000; Southlimit=68.333333 69.833333N-155.000000W 2010-07-30 x, 49 pages text https://hdl.handle.net/20.500.11929/sdsu:4893 en_US eng MICROFICHE COPY, no. TH-15053, available in Archives. -- 1 sheet. sdsu:4893 http://hdl.handle.net/20.500.11929/sdsu:4893 QE2.2 Endicott Group Lisburne Group Sadlerochit Group Sag River Sandstone Kingak Formation Shubik Formation Thesis Text 2010 ftsandiegostateu https://doi.org/20.500.11929/sdsu:4893 2022-03-24T18:52:51Z The Ikpikpuk-Umiat basin of Alaska's North Slope accumulated ~ 30,000' of clastic and carbonate strata during regional extension or transtension from the Late Devonian-Permian. However, this investigation confirms that low-intensity compressional shortening formed east-west trending fault propagation folds in addition to north-south trending flower structures recorded during upper Endicott Group and Lower Lisburne Group deposition. Mapping biostratigraphically age constrained horizons on reprocessed 2D NPRA seismic profiles provide a method for dating the deformation. This research reveals that the Ikpikpuk-Umiat basin experienced a local stress field inversion from 349-299 Ma prior to Triassic drifting. Observations from this work suggest that this synrift localized inversion propagated through the basin from east to west. Either a rotation in the direction of extension/transtension (causing strain partitioning), or a two stage basin formation (extension followed by a shear propagating through the basin) resulted in low-intensity thrusting recorded from the late Mississippian through the Pennsylvanian. San Diego State University Thesis north slope Alaska SDSUnbound (San Diego State University) |
institution |
Open Polar |
collection |
SDSUnbound (San Diego State University) |
op_collection_id |
ftsandiegostateu |
language |
English |
topic |
QE2.2 Endicott Group Lisburne Group Sadlerochit Group Sag River Sandstone Kingak Formation Shubik Formation |
spellingShingle |
QE2.2 Endicott Group Lisburne Group Sadlerochit Group Sag River Sandstone Kingak Formation Shubik Formation Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
topic_facet |
QE2.2 Endicott Group Lisburne Group Sadlerochit Group Sag River Sandstone Kingak Formation Shubik Formation |
description |
The Ikpikpuk-Umiat basin of Alaska's North Slope accumulated ~ 30,000' of clastic and carbonate strata during regional extension or transtension from the Late Devonian-Permian. However, this investigation confirms that low-intensity compressional shortening formed east-west trending fault propagation folds in addition to north-south trending flower structures recorded during upper Endicott Group and Lower Lisburne Group deposition. Mapping biostratigraphically age constrained horizons on reprocessed 2D NPRA seismic profiles provide a method for dating the deformation. This research reveals that the Ikpikpuk-Umiat basin experienced a local stress field inversion from 349-299 Ma prior to Triassic drifting. Observations from this work suggest that this synrift localized inversion propagated through the basin from east to west. Either a rotation in the direction of extension/transtension (causing strain partitioning), or a two stage basin formation (extension followed by a shear propagating through the basin) resulted in low-intensity thrusting recorded from the late Mississippian through the Pennsylvanian. San Diego State University |
author2 |
Fulk, Bryant Robert (author) Geological Sciences (department) Mellors, Robert Girty, Gary Edwards, Robert |
format |
Thesis |
title |
Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
title_short |
Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
title_full |
Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
title_fullStr |
Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
title_full_unstemmed |
Seismic analysis of the Ikpikpuk-Umiat Basin, NPRA, North Slope, Alaska |
title_sort |
seismic analysis of the ikpikpuk-umiat basin, npra, north slope, alaska |
publishDate |
2010 |
url |
https://hdl.handle.net/20.500.11929/sdsu:4893 |
op_coverage |
North America - United States - Alaska Northlimit=71.333333; Westlimit=-159.000000; Eastlimit=-152.000000; Southlimit=68.333333 69.833333N-155.000000W |
genre |
north slope Alaska |
genre_facet |
north slope Alaska |
op_relation |
MICROFICHE COPY, no. TH-15053, available in Archives. -- 1 sheet. sdsu:4893 http://hdl.handle.net/20.500.11929/sdsu:4893 |
op_doi |
https://doi.org/20.500.11929/sdsu:4893 |
_version_ |
1766141068165775360 |