Corona Formation and Heat Loss on Venus by Coupled Upwelling and Delamination

  title={Corona Formation and Heat Loss on Venus by Coupled Upwelling and Delamination},
  author={Suzanne E. Smrekar and Ellen R. Stofan},
Coronae are volcanotectonic features that are unique to Venus and are interpreted to be small-scale upwellings. A model in which upwelling causes delamination at the edge of the plume head, along with deformation of a preexisting depleted mantle layer, produced the full range of topographic forms of coronae. If half of the coronae are active, delamination of the lower lithosphere could account for about 10 percent of Venus9 heat loss, with another 15 percent due to upwelling. Delamination may… 

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