Asthenosphere

the mantle into layers based on the physical characteristics of those layers. The temperature of the part of the mantle close to the crust, also known as the lithosphere, is about 500-900 degrees Celsius. The bottom of the mantle is called the asthenosphere. It is about 4,000 degrees Celsius at the bottom. The whole mantle is 2,867 kilometers thick,” he informed. Even though that sounded like jibberish, I pretended that I understood. “I told you I can read minds. I know you don’t understand…

Below the lithosphere is astenosfera, that which is the inner part of Manti. Astenosphere is superheated and acting as an extremely viscous liquid. The biggest Tectonic plate is Pacific Ocean plate. Lithosphere essentially floats on the asthenosphere broken the tectonic plates. There are two types of boards: the ocean (eg. Slab Pacific Ocean) and continental plates. These plates are the segments which are moving relatively one in relation to each other and at the same time can be formed from…

Zealand and can produce a multitude of hazards to both the natural and cultural environment. Volcanism occurs in New Zealand due to its location on the boundary of the Pacific Plate and Indo-Australian Plate. Due to convection currents in the asthenosphere, the tectonic plates are pushed together and one plate is pushed below the other creating a subduction zone. In the North Island the Pacific Plate is subducting below the Indo-Australian but in the South the Indo-Australian subducts beneath…

New crust is generated as plates pull away from each other and can either cause sea floor spreading or new land to be created. An example of a continental rift valley is the Eastern African Rift Valley which is being formed as the Eastern African plate is moving away from the main Africa plate in a north-easterly direction. Plates move apart due to convection currents in the lithosphere. As the crusts move away from each other the crust thins, tension in the lithosphere causes the plate to…

Abstract Porphyry copper deposits are important for economic value and resources. Some of the common metals found in porphyry copper deposits are gold, silver, and molybdenite. Most porphyry copper deposits can be found along the Pacific Rim and formed during the Tertiary and Quaternary periods. Porphyry copper deposits form through a series of subducting tectonic events, having a copper bearing source, and convection of hydrothermal fluids acting on an igneous intrusion. Introduction…