Uplift of Venus Geoid Highs: Timing from Coronae and Craters

Introduction: Crater distribution on Venus indicates that the surface has undergone global-scale resurfacing in a short period of time [1]. Determining the timing of events has been difficult due to the near-random crater pattern. Some progress has been made in the relative dating of various types of features [2,3,4]. In addition, current deformation of Venus' surface has been described as a swell-push force, defined as the gradient of the geoid height [5]. Two likely areas of current geologic activity, Atla Regio and Beta Regio are marked by most prominent geoid highs. We compare these two features in terms of coronae and craters to establish the relative timing of the their formation.