Keeping that youthful look
Article Abstract:
The Magellan spacecraft's radar images of Venus showed that global resurfacing has eliminated most of that planet's impact craters. The American Geophysical Union meeting in San Francisco, CA on Dec 7-11, 1992, focused on the possible causes of this resurfacing. Although some participants argued that the resurfacing took place in episodes over the last 500 million years rather than all at once, most participants preferred the catastrophic model. Time-variable mantle convection and lithospheric instability are the two proposed causes of catastrophic resurfacing.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Enigmatic northern plains of Mars
Article Abstract:
The planet of Mars' northern plains are known to form the flattest surface in the Solar System, but the topography shows terraces and ridges that suggest the presence at some time of an ocean. Changes in the northern plains' linear slopes are recognized as possible shorelines of an ocean that existed earlier in Mars' history.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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Sediments to planetary motion
Article Abstract:
Research is presented describing study of Mediterranean earth sediment to investigate astronomical and planetary rotational history.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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- Abstracts: Applying metapopulation theory to conservation of migratory birds. Response of avian communities to historic habitat change in the northern Chihuahuan Desert
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