Lithospheric Thinning by Mantle Plumes
نویسندگان
چکیده
منابع مشابه
Shallow lithospheric contribution to mantle plumes revealed by integrating seismic and geochemical data
[1] Using an integrated geophysical and geological approach based on a comparative analysis of 27 different parameters, we investigate both the location and origin of the source material for hot spot volcanoes. We report a significant correlation between extreme geochemical compositions of lavas with both shallow seismic velocities and the depth extent to which a hot spot source can be traced w...
متن کاملFree Energy Minimization by Simulated Annealing with Applications to Lithospheric Slabs and Mantle Plumes
An optimization algorithm based upon the method of simulated annealing is of utility in calculating equilibrium phase assemblages as functions of pressure, temperature, and chemical composition. Operating by analogy to the statistical mechanics of the chemical system, it is applicable both to problems of strict chemical equilibrium and to problems involving metastability. The method reproduces ...
متن کاملMantle plumes persevere
A recent census suggests that seamounts1 — typically extinct underwater volcanoes — are numerous. It has been estimated that about 125,000 seamounts with a height of more than one kilometre exist on our ocean floors. Most of these are postulated to form at volcanic hotspots that are the surface expressions of mantle plumes — hot material upwelling from Earth’s interior. Yet, many seamounts do n...
متن کاملCorn syrup mantle plumes.
In the dark, microscopic plastic beads in the 200-gallon tank of corn syrup glow and sparkle when light from a projector shines at them in geophysical fluid dynamicist Christopher Kincaid’s laboratory at the University of Rhode Island. Experiments with this goo could help explain whether columns of magma rising up from near the Earth’s core might explain supervolcanic activity. Scientists have ...
متن کاملHot Spots and Mantle Plumes
Hot spots are anomalous areas of surface volcanism that cannot be directly associated with plate tectonic processes. The term hot spot is used rather loosely. It is often applied to any long-lived volcanic center that is not part of the global network of mid-ocean ridges and island arcs. The classic example is Hawaii. Anomalous regions of thick crust on ocean ridges are also considered to be ho...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ASEG Extended Abstracts
سال: 2016
ISSN: 2202-0586
DOI: 10.1071/aseg2016ab258