Mathematics – Logic
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sosyr..39..199a&link_type=abstract
Solar System Research, Volume 39, Issue 3, pp.199-213
Mathematics
Logic
1
Scientific paper
It is obvious that Venusian volcanotectonic features, namely, coronae and novae, are somehow connected to each other. First, approximately half of the novae are located in the interior region of coronae. In addition, it is proposed that novae represent either the first or a later stage of corona evolution. However, the affects of novae structures on the properties of a corona have been uncertain. The analysis of the Hecate Chasma area shows that coronae with associated novae are different from those coronae with no associated novae structures: corona-nova joint structures are located at higher altitudes and show more prominent volcanism than single coronae. Furthermore, the latest morphologically recorded activity of corona-novae structures is, in general, younger than the latest morphologically recorded activity of the lone coronae. Therefore, it is apparent that the associated novae have a noticeable affect to the characteristics of the adjoining coronae. A stratigraphical analysis of the area has established that the region shows the age relationships expected from the global-scale stratigraphy model by Basilevsky and Head (1995a, 1995b, 2000). In addition, the analysis showed that the formation of coronae and novae cannot be exclusively connected to a certain time era in Venusian geological history, at least not in that particular area.
Aittola Marko
Raitala Jouko
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