Ovda Regio

Ovda Regio

. The surface of Venus is laced with fractures, ranging from elaborate networks of fine cracks to giant canyons millions of meters long. Episodes of fracturing and folding have created the high-standing domes and ridges shown in this highland area known as Ovda Regio; it forms the western part of Aphrodite Terra. The low-lying valleys between these ridges were then flooded by lava, creating this surrealistic radar image of bright, closely-packed islands in a dark sea. An impact crater 60 thousand meters across (top left) is superimposed on the older flood lava. An extensive fracture system extends outward like spokes from the circular feature at the bottom right; these fractures also cut across older volcanic features. This Magellan radar image is 600 thousand meters wide. The region is named Ovda after a Titaness having supernatural powers. (Courtesy of NASA.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University