Water that seeps out of the top of the tank is particularly ominous. If you fear a leak as soon as you begin to use your new gas heater, donât panic. The first time a gas heater starts up, it will produce condensation. That is the reason for the dripping sound, and perhaps a tiny puddle.
Rift valleys can be very deep, and both such valleys known to exist in continental areas on Earth, the East African Rift and the Siberian Baikal Rift, have large, deep lakes in them. As the walls of a rift valley are pulled apart, the floor of the valley tends to sink. If this subsidence happens faster than erosion from the walls can fill it in with sediment, the floor of the valley continues to fall relative to the surrounding terrain.
Rift Valleys. Introduction Rift valleys are not caused by erosion but are created by tectonic activity. Grabens are another name for these valleys. Today geologists use the term graben primarily to describe valleys on the continents.he Indian Plate slipped beneath the Burma Plate during the earthquake. Rift Valleys are not caused by erosion but are created by tectonic activity. These valleys form when oceanic plates are moving in different directions forming a divergent boundary. Marine Sponges are sessile animals that look like plants.