Challenges To The Plume Model
The weak visibility of the postulated plume in tomographic images of the lower mantle and the geochemical evidence for eclogite in the mantle source have led to the theory that Iceland is not underlain by a mantle plume at all, but that the volcanism there results from processes related to plate tectonics, and is restricted to the upper mantle.
Read more about this topic: Iceland Plume
Famous quotes containing the words challenges, plume and/or model:
“A powerful idea communicates some of its strength to him who challenges it.”
—Marcel Proust (1871–1922)
“In some of those dense fir and spruce woods there is hardly room for the smoke to go up. The trees are a standing night, and every fir and spruce which you fell is a plume plucked from night’s raven wing.”
—Henry David Thoreau (1817–1862)
“When you model yourself on people, you should try to resemble their good sides.”
—Molière [Jean Baptiste Poquelin] (1622–1673)