Qualitative assessment of composition and reservoir quality of Albian-Cenomanian Nanushuk Formation sandstones, measured outcrop sections, central North Slope, Alaska

Metadata Updated: July 5, 2023

Raw Data File 2021-13, Qualitative assessment of composition and reservoir quality of Albian-Cenomanian Nanushuk Formation sandstones, measured outcrop sections, central North Slope, Alaska, presents a qualitative appraisal of thin sections collected from Nanushuk outcrops to ascertain their reservoir potential. The DGGS sample collection was searched for petrographic thin sections collected from stratigraphic sections of the Nanushuk Formation measured by David LePain working with various colleagues, including Russ Kirkham, Paul Decker, Dave Houseknecht, and Nina Harun over the past 22 years. The search yielded 264 thin sections of Nanushuk siltstone and sandstone. Three additional thin sections of the Seabee Formation mudstone, siltstone, and sandstone were collected from the upper portion of a measured section that straddles the Nanushuk - Seabee contact. These 267 samples were collected from 32 stations located in eight geographic areas on the North Slope, including Slope Mountain, May Creek, Arc Mountain, Rooftop Ridge, Big Bend of the Chandler River, Ninuluk Bluff on the Colville River, Killik Bend of the Colville River, and Horseshoe Bend of the Colville River. The thin sections were examined qualitatively to ascertain several petrographic properties, including grain size, detrital composition, cement and matrix content, the abundance of burrows and laminations, and porosity distribution. Sedimentary structures observed in the field were noted, as was the interpreted sedimentary facies association. The results are compiled in a spreadsheet along with information on geographic location, latitude, longitude, and measured petrophysical properties (porosity, permeability, and grain density) of the few samples where available. All files are available from the DGGS website: http://doi.org/10.14509/30746.

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Metadata Date	January 5, 2022
Metadata Created Date	July 5, 2023
Metadata Updated Date	July 5, 2023
Reference Date(s)	January 1, 2021 (publication)
Frequency Of Update	notPlanned

Metadata Source

ISO-19139 ISO-19139 Metadata
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FGDC Original FGDC Metadata
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Harvested from Alaska Division of Geological and Geophysical Surveys

Additional Metadata

Resource Type	Dataset
Metadata Date	January 5, 2022
Metadata Created Date	July 5, 2023
Metadata Updated Date	July 5, 2023
Reference Date(s)	January 1, 2021 (publication)
Responsible Party	Alaska Division of Geological & Geophysical Surveys (Point of Contact)
Contact Email	dggspubs@alaska.gov
Guid	620fab57-1de6-4dec-86cd-e4cf8dd70d33_source
Access Constraints	Use Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product., Access Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Bbox East Long	-149.025190
Bbox North Lat	69.141325
Bbox South Lat	68.643059
Bbox West Long	-155.762933
Coupled Resource
Frequency Of Update	notPlanned
Harvest Object Id	620fab57-1de6-4dec-86cd-e4cf8dd70d33
Harvest Source Id	8f77b6d5-f630-4995-bdf3-0aee7158a7f3
Harvest Source Title	Alaska Division of Geological and Geophysical Surveys
Licence	The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
Lineage	This lineage was generated by the FGDC CSDGM to 19139 transformation
Metadata Language	eng; USA
Metadata Type	geospatial
Old Spatial	{"type": "Polygon", "coordinates": [[[-155.762933, 68.643059], [-149.02519, 68.643059], [-149.02519, 69.141325], [-155.762933, 69.141325], [-155.762933, 68.643059]]]}
Progress	completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester	True
Temporal Extent Begin	1999-01-01
Temporal Extent End	2021-01-01

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