NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Mars: Stratigraphy of Western Highlands and Polar RegionsGeologic mapping and stratigraphic studies of Mars based on Viking images improved knowledge of the relative age and occurrence of geologic units on a global scale. Densities of geologic units or features during the Noarchian, Hesperian, and Amazonian periods are indicated for the North and South polar regions as well as the equatorial region of Mars. Cumulative counts of crater size frequencies for craters larger than 2 km in diameter on plateau units mapped in the western region of Mars counts indicate that the plateau terrain as a whole was thinly resurfaced during the Hesperian Period, and a large proportion of pre-existing craters less than 10 to 15 km in diameter was buried. The formation of northern plains, subpolar highlands, and both polar regions is also described.
Document ID
19850015342
Document Type
Other
Authors
Tanaka, K. L. (Geological Survey Flagstaff, AZ, United States)
Scott, D. H. (Geological Survey Flagstaff, AZ, United States)
Tuesink, M. F. (Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984
Subject Category
LUNAR AND PLANETARY EXPLORATION
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19850015163Analytic PrimaryReports of Planetary Geology and Geophysics Program, 1984
Document Inquiry