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TitleAn innovative approach using digital photogrammetry to map geology in the Porcupine Hills, southern Alberta, Canada
AuthorLebel, DORCID logo; Da Roza, R
SourcePhotogrammetric Engineering and Remote Sensing vol. 65, no. 3, 1999 p. 281-288
LinksOnline - En ligne
Alt SeriesGeological Survey of Canada, Contribution Series 1998007
File formatpdf
NTS82H/12; 82H/13; 82G/09; 82G/16
AreaPorcupine Hills; Rocky Mountain Foothills; Brocket; Head-Smashed-In-Buffalo Jump
Lat/Long WENS-114.2000 -113.5000 50.0000 49.5000
Subjectssurficial geology/geomorphology; regional geology; general geology; photogrammetric techniques; photogrammetric surveys; photogeology; field methods; cartography; computer mapping; remote sensing; mineral exploration; petroleum exploration; mapping techniques
Illustrationslocation maps; photographs
Released1999 01 01
AbstractDigital and analog air photographs and field observations have been used to map resistant sandstones within the Porcupine Hills Formation in southern Alberta. The traces of these beds were plotted in three dimensions using a digital stereoplotter. The procedure permits correction of plotting errors made by the geologist who could previously use only a few ground points recognizable in the field to locate sandstone beds on the digital topographic base map. Digital orthophotos and elevation data were then used to calculate three-point solutions of the strike and dip of sandstone ridges. These procedures allowed the geologist to improve his geological interpretation and to validate the digital transfer of line work by the photogrammetrist. Photogrammetrically calculated bedding measurements augmented those measured in the field and allowed the geologist to delineate several previously unrecognized folds.

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