Open Data

Twentieth Percentile Modelled Base of the Paskapoo Formation, Alberta (Gridded data, ASCII format)

Description

The base of the Paskapoo Formation is unconformable with the underlying Scollard Formation. Alberta Geological Survey differentiates the Paskapoo Formation from the underlying Scollard Formation by the first thick sandstone above the uppermost coal seam of the Ardley coal zone. We defined 'thick sandstone' to be 5 m or more thick. This dataset contains the gridded results of the structural surface of the base of the Paskapoo Formation modelled from stratigraphic picks of the >5 m sand above the Scollard Formation coal from oil and gas industry gamma-ray logs. We modelled only the undeformed part of the Paskapoo Formation, which lies east of the Rocky Mountains deformation belt. Because of uncertainty in defining the Paskapoo-Scollard contact, we selected the P20 (20th percentile or low estimate) modelled surface of those data, which is about 5 m deeper than the P50 or median estimated surface. Subsequent boundaries of slices were constructed parallel to this surface, recognizing that, locally, the base of the Paskapoo Formation has an undulating to incised erosional contact with the underlying Scollard Formation. The model illustrates an elongated, concave surface with a central region plunging westwards towards the Alberta syncline and elevated limbs to the northwest and southeast.

Updated

March 29, 2016

Tags
72E 72L 72M 73D 73E 73L 82G 82H 82I 82J 82N 82O 82P 83A 83B 83C 83D 83E 83F 83G 83H 83I 83J 83K 83L 83M 83N 83O 83P ALBERTA ARDLEY-COAL-ZONE CANADA COAL-SEAMS DIGITAL-MODEL GEOSCIENTIFICINFORMATION GEOSTATISTICS GIS-DATA PASKAPOO-FORMATION RASTER-GRID SANDSTONE SCOLLARD-FORMATION STRATIGRAPHIC-PICKS STRATIGRAPHY STRUCTURE-MAPS

Title and Dataset Information

Alternative Title

Twentieth Percentile Modelled Base of the Paskapoo Formation, Alberta (Gridded data, ASCII format)

Date Modified

2016-03-29

Update Frequency

Every 2 months

Publisher / Creator Information

Publisher

Alberta Energy Regulator

Subject Information

Start Date

2009-01-01

End Date

2011-01-01

Resource Dates

Date Created

2012-09-12

Date Added to catalogue

2020-04-30T04:06:06.053089

Date Issued

2012-09-12

Date Modified

2016-03-29

Identifiers

Usage / Licence

Contact

Contact Name

Alberta Geological Survey

Contact Email

AGS-Info@aer.ca