Minerals in rock mass hold clues to 400-meter ascent
Article Abstract:
A group of mineralogists discovered a chuck of rock that appears to have originated 400 kilometers lower in the mantle. They believe the rock from the Arami massif in the mountains of southern Switzerland was buoyed up by a larger region of lighter crystal rock.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
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Deep-sinking slabs stir the mantle
Article Abstract:
Two new seismic-imaging studies support the theory that slabs that disappear from the ocean floor dive as deep as the bottom of earth's mantle. Studies led by Stephen Grand of the Univ of Texas-Austin and Rob van der Hilst at MIT are described.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1997
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Putting stiffness in Earth's mantle
Article Abstract:
A study by geophysicists Jerry X. Mitrovica and Alessadro Forte indicates that the Earth's mantle increases markedly in viscosity from top to bottom. The findings offer new insights into how the mantle layers mix.
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1996
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