Other
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986geokh......579n&link_type=abstract
Geokhimiia (ISSN 0016-7525), May 1986, p. 579-589. In Russian.
Other
Plains, Planetary Geology, Ring Structures, Venus Surface, Impact Damage, Planetary Craters, Size (Dimensions), Spatial Distribution, Statistical Analysis
Scientific paper
Size and area distributions of various circular features detected on the images of Venus obtained by Venera-15 and Venera-16 satellites were analyzed. For some of them (ovoids and spider-like shapes) the new data support the earlier view of their origin as endogenous structures. Others (narrow rim depressions and their albedo counterparts) are natural extensions of obvious impact craters and can be classified as ancient and degraded impact craters. If this view is correct, the age of total crater population must be about 3 billion years, with the estimated rates of resurfacing being 3 to 4 orders of magnitude lower than terrestrial processes. Circular shapes of the phantom type can be classified as either unusual endogenic formations or formations by a specific impact event. If the latter is the case, the Venusian surface must still retain the evidence of a bombardment by meteorites that took place 4 to 4.5 billion years ago.
Bazilevskii Aleksandr T.
Nikolaeva Ol'ga V.
Ronca Luciano B.
No associations
LandOfFree
Circular features on the Venus plains as an evidence of its geological history does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Circular features on the Venus plains as an evidence of its geological history, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circular features on the Venus plains as an evidence of its geological history will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1773859