Early evolution of continents

Article Abstract:

Geochemical methods are beginning to provide information about the early evolution of the continental crust and the Earth's mantle. For example, one research team has determined that the amount of continental crust has remained stable since it formed.

Author: Hofmann, A.W.
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1997
Natural history, Geochemistry, Continents

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Seeing a mountain in a grain of garnet

Article Abstract:

The discovery of the low-pressure mineral cristobalite in Appalachian garnets is among the geologic studies that are providing new information on the collision and subduction process that occurs when continents collide and mountains are formed.

Author: Maruyama, S., Ernst, W.G., Liou, J.G.
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1997
Geology, Structural, Structural geology, Rocks, Metamorphic, Metamorphic rocks, Inclusions

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How vanished oceans drop an anchor

Article Abstract:

Research on submarine geology indicates that differences in subduction zone behavior are caused by a sea anchor force. The force can move the descending ocean floor up into the upper plate, causing an earthquake, or push it down.

Author: Apenzeller, Tim
Publisher: American Association for the Advancement of Science
Publication Name: Science
Subject: Science and technology
ISSN: 0036-8075
Year: 1995
Models, Plate tectonics, Submarine geology, Marine geology

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Subjects list: Research, Earth, Crust (Geology), Subduction zones (Geology), Subduction zones
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