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Map of Mars showing channels and possible paleolake basins Map of Mars showing channels and possible paleolake basins
The significance of water in the geologic evolution of Mars was strikingly revealed by Mariner and Viking spacecraft images. Theoretical and conceptual models of the Martian climate through time range from a brief, early, warm, and wet period followed by protracted desertification to episodic oceans that inundated the northern lowland plains and produced temperate climatic regimes.
Merged aeromagnetic map of interior Alaska Merged aeromagnetic map of interior Alaska
No abstract available.
Quaternary Geologic Map of the Lake of the Woods 4 Degrees x 6 Degrees Quadrangle, United States and Canada Quaternary Geologic Map of the Lake of the Woods 4 Degrees x 6 Degrees Quadrangle, United States and Canada
The Quaternary Geologic Map of the Lake of the Woods 4 deg x 6 deg Quadrangle, United States and Canada, was mapped as part of the U.S. Geological Survey Quaternary Geologic Atlas of the United States map series (Miscellaneous Investigations Series I-1420, NM-15). The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that...
Satellite image map of Antarctica, 1996 Satellite image map of Antarctica, 1996
No abstract available.