This region is one of the most geologically young and tectonically active in North America. The scientific objective is to monitor crustal deformation in tectonically active areas. The Proterozoic Eon was a very tectonically active period in the Earth's history. The terrane is high, contains a complex pattern of faults and is tectonically active. There are few craters on Europa because its surface is tectonically active and young. The basin has complex geology and is tectonically active. Again this process depends on tectonically deformed crystals. The basin became isolated as the edges were tectonically raised. Malaysia is located on the Sunda shelf, and is tectonically inactive. It is in a tectonically active zone and experiences several (usually small) earthquakes each year. Today, Mars is believed to be largely tectonically inactive. The lake is deduced to have been formed tectonically. Fiji lies in a tectonically complex area between the Australian Plate and the Pacific Plate. Since then it has been tectonically quiet. The tectonically active Rodrigues Triple Point lies on the sea-floor nearby.