Cleopatra Patera on Venus: Venera 15/16 evidence for a volcanic origin
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Abstract
The non-concentric nature, anomalous depth, and terraced morphology of the nested craters that compose Cleopatra Patera are more closely analogous to volcanic craters (calderas) than multi-ring impact structures. Associated deposits northeast and downslope of the Patera first recognized on Venera 15/16 radar images are interpreted as volcanic plains related to, and perhaps cogenetic with, Cleopatra. The plains lavas probably originated as effusions from a radial rift zone or ring fissures. Rim deposits surrounding Cleopatra are asymmetric along the structural fabric of the region, also indicating fissure-type eruptions. Finally, a volcanic origin not only is easily reconciled with the tectonic setting of the Patera, it is almost required by the correlation between the Patera and regional structural trend.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Cleopatra Patera on Venus: Venera 15/16 evidence for a volcanic origin |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/GL014i001p00041 |
| Volume | 14 |
| Issue | 1 |
| Year Published | 1987 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | 4 p. |
| First page | 41 |
| Last page | 44 |
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