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Geologic map of the Casius Quadrangle of Mars

IMAP 1038
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Abstract

Geologic units of the martian surface are subdivided on the basis of surface morphology, albedo, and crater distribution and are placed in a stratigraphic sequence following principles of superposition, crosscutting relations, and, to a degree, crater density. 

The Casius quadrangle (30˚ N to 65˚ N lat; 240˚ W to 300˚ W long) is one of the northern tier of Lambert conformal sheets of the Mars Atlas. It consists of four distinctive physiographic regions: 1) part of the northern cratered plains which forms an incomplete annulus around the north polar region, 2) smooth lowland plains of Utopia Planitia across the central and southeastern part of the map, 3) mountainous terrain, in the Nilosyrtis Mensae region south of the lowland plains, consisting of distinct mountains with hummocky surfaces, and 4) cratered plateau in the southwest part of the map, forming the northern part of the large complex cratered region in the mid-latitudes of Mars. In the Casius quadrangle, the cratered plateau is broken by a set of linear to curved parallel-sided canyons on its northern margin.

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Casius Quadrangle of Mars
Series title IMAP
Series number 1038
DOI 10.3133/i1038
Year Published 1978
Language English
Publisher U.S. Geological Survey
Description 1 Plate: 54.67 × 44.00 inches
Other Geospatial Mars
Scale 46000
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