Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska
Thesis (M.S.) University of Alaska Fairbanks, 2010 "Organic-rich, marine mudstone known informally as the Lower Cretaceous (Barremian-Aptian) pebble shale unit (PSU) is exposed in the northeastern Brooks Range. Outcrops were examined along the Canning River, an unnamed tributary of the Kataktur...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/12759 2023-05-15T15:46:59+02:00 Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska van der Kolk, Dolores A. Whalen, Michael T. McCarthy, Paul J. Newberry, Rainer J. Wartes, Marwan A. 2010-05 http://hdl.handle.net/11122/12759 en_US eng http://hdl.handle.net/11122/12759 Department of Geology and Geophysics Stratigraphic geology Cretaceous geology Geochemistry Sedimentology Sadlerochit Mountains Master of Science in Geology Thesis ms 2010 ftunivalaska 2023-02-23T21:37:59Z Thesis (M.S.) University of Alaska Fairbanks, 2010 "Organic-rich, marine mudstone known informally as the Lower Cretaceous (Barremian-Aptian) pebble shale unit (PSU) is exposed in the northeastern Brooks Range. Outcrops were examined along the Canning River, an unnamed tributary of the Katakturuk River, and Marsh Creek. Gamma-ray data was measured for each stratigraphic section in order to correlate outcrop with wire-line well logs. Samples of the PSU were collected for thin section petrography, lithostratigraphy, biostratigraphy, total organic carbon (TOC), Rock-Eval II, vitrinite reflectance (R₀), and X-ray Fluorescence. The PSU contains bioturbated and laminated mudstones with thin-bedded siltstones interpreted as interbedded hemipelagites and turbidites. PSU foraminifers were deposited on the outer shelf and upper slope. Intervals with high TOC (2 to 6 wt %) indicate good source-rock quantity in the PSU; however, Rock Eval results suggest poor source-rock quality related to elevated thermal maturities (1.3 to 1.8 %R₀). The PSU is depleted in metals relative to average black shale"--Leaf iii Alaska’s Division of Geological & Geophysical Surveys, Alaska Geological Society, the American Association of Petroleum Geologists, BP, the Geological Society of America, Geophysical Society of Alaska, University of Alaska Fairbanks 1. Introduction -- 2. Source-rock potential of the Lower Cretaceous Pebble Shale Unit, northeastern Alaska -- 3. Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous Pebble Shale Unit, northeastern Alaska -- 4. Conclusion -- References. Thesis Brooks Range Alaska University of Alaska: ScholarWorks@UA Fairbanks |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Stratigraphic geology Cretaceous geology Geochemistry Sedimentology Sadlerochit Mountains Master of Science in Geology |
spellingShingle |
Stratigraphic geology Cretaceous geology Geochemistry Sedimentology Sadlerochit Mountains Master of Science in Geology van der Kolk, Dolores A. Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
topic_facet |
Stratigraphic geology Cretaceous geology Geochemistry Sedimentology Sadlerochit Mountains Master of Science in Geology |
description |
Thesis (M.S.) University of Alaska Fairbanks, 2010 "Organic-rich, marine mudstone known informally as the Lower Cretaceous (Barremian-Aptian) pebble shale unit (PSU) is exposed in the northeastern Brooks Range. Outcrops were examined along the Canning River, an unnamed tributary of the Katakturuk River, and Marsh Creek. Gamma-ray data was measured for each stratigraphic section in order to correlate outcrop with wire-line well logs. Samples of the PSU were collected for thin section petrography, lithostratigraphy, biostratigraphy, total organic carbon (TOC), Rock-Eval II, vitrinite reflectance (R₀), and X-ray Fluorescence. The PSU contains bioturbated and laminated mudstones with thin-bedded siltstones interpreted as interbedded hemipelagites and turbidites. PSU foraminifers were deposited on the outer shelf and upper slope. Intervals with high TOC (2 to 6 wt %) indicate good source-rock quantity in the PSU; however, Rock Eval results suggest poor source-rock quality related to elevated thermal maturities (1.3 to 1.8 %R₀). The PSU is depleted in metals relative to average black shale"--Leaf iii Alaska’s Division of Geological & Geophysical Surveys, Alaska Geological Society, the American Association of Petroleum Geologists, BP, the Geological Society of America, Geophysical Society of Alaska, University of Alaska Fairbanks 1. Introduction -- 2. Source-rock potential of the Lower Cretaceous Pebble Shale Unit, northeastern Alaska -- 3. Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous Pebble Shale Unit, northeastern Alaska -- 4. Conclusion -- References. |
author2 |
Whalen, Michael T. McCarthy, Paul J. Newberry, Rainer J. Wartes, Marwan A. |
format |
Thesis |
author |
van der Kolk, Dolores A. |
author_facet |
van der Kolk, Dolores A. |
author_sort |
van der Kolk, Dolores A. |
title |
Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
title_short |
Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
title_full |
Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
title_fullStr |
Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
title_full_unstemmed |
Geochemistry, sedimentology, and stratigraphy of the Lower Cretaceous pebble shale unit, northeastern Alaska |
title_sort |
geochemistry, sedimentology, and stratigraphy of the lower cretaceous pebble shale unit, northeastern alaska |
publishDate |
2010 |
url |
http://hdl.handle.net/11122/12759 |
geographic |
Fairbanks |
geographic_facet |
Fairbanks |
genre |
Brooks Range Alaska |
genre_facet |
Brooks Range Alaska |
op_relation |
http://hdl.handle.net/11122/12759 Department of Geology and Geophysics |
_version_ |
1766381797150556160 |