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Geologic map of the Grimaldi quadrangle of the Moon

IMAP 740
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Abstract

The Grimaldi quadrangle lies at the southwest margin of Oceanus Procellarum about 1,000 km east of Orientale, the youngest of the lunar multi-ringed basins. The distal ends of the ejecta blanket surrounding the Orientale basin partly covers the western third of the quadrangle. The relatively small, two-ring Grimaldi basin is in the northwest corner of the quadrangle, and the Humorum basin lies about 750 km to the southeast.  A vestigial multi-ring basin mostly engulfed by mare appears to control the distribution of terra and mare along the southwest margin of Oceanus Procellarum; the craters Hansteen and Billy are on a northwest-trending topographic high which represents part of the ring system of this basin. Terra materials of distinctive texture, apparently unrelated to multi-ring basins and probably of volcanic origin, occupy the central parts of the quadrangle.

Suggested Citation

McCauley, J., 1973, Geologic map of the Grimaldi quadrangle of the Moon: U.S. Geological Survey IMAP 740, 1 Plate: 74.00 × 42.67 inches, https://doi.org/10.3133/i740.

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Grimaldi quadrangle of the Moon
Series title IMAP
Series number 740
Subseries MOON
DOI 10.3133/i740
Year Published 1973
Language English
Publisher U.S. Geological Survey
Description 1 Plate: 74.00 × 42.67 inches
Other Geospatial Grimaldi Basin, Moon, Oceanus Procellarum
Scale 1000000
Additional publication details