The history of volcanism on Venus

Estimates of the volume of the main volcanic units on Venus show that both shield plains and regional plains are the major contributors to the volcanic resurfacing on Venus. The total volume of volcanic materials erupted during the volcanically dominant regime is estimated to be from about 140 to 200x106 km3. In sharp contrast to this, the total estimated volume of lobate plains is much smaller, ~20-30 x106 km3, corresponding to a volcanic flux that is about an order of magnitude smaller that the average intraplate volcanic flux on Earth.