Large Shield Volcanoes on Venus: Stratigraphic Relationships with Surrounding Tectonic Features and Geologic Units

Details Large Shield Volcanoes on Venus: Stratigraphic Relationships with Surrounding Tectonic Features and Geologic Units Large Shield Volcanoes on Venus: Stratigraphic Relationships with Surrounding Tectonic Features and Geologic Units

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..275c&link_type=abstract

Lunar and Planetary Science, volume 27, page 275

Physics

Stratigraphy, Venus, Volcanoes: Large

Scientific paper

The stratigraphic position and age of volcanic features on Venus is important to the determination of absolute and relative ages of the surface, the assessment of the global magmatic history, and tests of models of global stratigraphy and resurfacing events. Large shield volcanoes are an obvious choice for attempts to determine crater ages because they are large enough that the total area of large shield volcanoes may not be trivial in terms of crater age estimates, and they are large enough that some reliable stratigraphic relations may be determined with surrounding craters, plains, ridges, fractures and related deformation. An additional supposition is that they appear frequently to be stratigraphically young and should provide an estimate of the time elapsed since the proposed period of enhanced global resurfacing. A separate issue is the timing of large volcano emplacement with respect to tectonic characteristics, particularly rifts, fracture belts, and plains type ridge deformation that may have taken place subsequent to resurfacing events. Several estimates of the collective crater age of large shield volcanoes and related volcanic features have been made. Ideally, these characteristics together with an estimate of the total area of the population of large volcanoes should provide a collective age for the population as a whole either with respect to resurfacing or global and local tectonic characteristics.

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