What is the density of the Earth's mantle? How wide is the Earth's mantle? How hot is the lithosphere? What is the range of temperatures within the stiffer mantle? Which layer of the Earth is the coolest in temperature? How big is the mantle of the Earth?
Rigden, Composition and temperature of the Earth's mantle: seismological models interpreted through experimental studies of Earth materials, in: I. Jack- son (Ed.), The Earth's Mantle: Composition, Structure and Evolution, Cambridge Univ. Press, Cambridge, UK, 1998, pp...
The tectono-magmatic history of the Midcontinent rift system can be explained by the presence of a mantle plume bringing elevated-temperature mantle beneat... RS White - 《Canadian Journal of Earth Sciences》 被引量: 54发表: 1997年 Seismic boundaries in the mantle beneath Iceland: a new const...
Detachment of subcontinental lithospheric mantle and rise of hot asthenosphere may also be responsible for added heat. UHT metamorphism may have been particularly prevalent in the Precambrian when heat flow was greater, but examples are known throughout Earth history. Geothermobarometry is a common ...
In subject area: Earth and Planetary Sciences Potential temperature refers to the temperature an air parcel would have if it were expanded or compressed adiabatically from its existing pressure to a pressure of 1000 mbar or 100 hPa. From: International Geophysics, 2012 ...
The thermochemical structure of lithospheric and asthenospheric mantle exert primary controls on surface topography and volcanic activity. Volcanic rock compositions and mantle seismic velocities provide indirect observations of this structure. Here, we compile and analyze a global database of the distribut...
All of that life is made possible by the core of the Earth. Geologists have broken the Earth down into three main categories: the crust, the mantle, and the core. These layers were determined by their chemical composition. The core is the innermost layer of Earth, extending from the exact...
The uppermost part of the mantle near the crust is hard and brittle. This layer and the Earth's crust are known as the lithosphere, while the rest of the upper mantle below is called the asthenosphere. The rock here is malleable but still solid. It is said to be plastic. Plastic is ...
Feedbacks between mantle hydration and hydrothermal convection at ocean spreading centers Hydration of the oceanic lithosphere is an important and ubiquitous process which alters both the chemical and physical properties of the affected litholog... K Iyer,LH Rüpke,JP Morgan - 《Earth & Planetary Scie...
The thickness of thermal lithosphere is also estimated assuming its bottom has a mantle adiabatic temperature of 1300掳C. Our results show that the study area exhibits an alternate distribution pattern with three weak zones and two stable blocks. The Qilian orogen, the Shanxi rift system and the...