Rock

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Physical Environment > Rock

Ace's Exambusters Earth Science/Geology Study Cards
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Earth: An Introduction to Physical Geology, 6th Edition

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Edward J. Tarbuck, Frederick K. Lutgens
August 1998
An all-new, groundbreaking media package brings to life the latest edition of the best-selling Earth by Ed Tarbuck and Fred Lutgens. A text-dedicated website, new GEODe II CD-ROM (Included with every copy of the text!), and more provide complete, state-of-the-art multimedia support for both students and instructors. Earth: An Introduction to Physical Geology, Sixth Edition retains the hallmarks professors have come to expect from Tarbuck and Lutgens--a student-friendly writing style, carefully crafted illustrations by Dennis Tasa that are geologically accurate and visually appealing, and coverage of the most recent geologic events.

Rocks and Minerals (Eyewitness Handbooks)

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Chris Pellant et al
June 1992

World's deepest rocks recovered

The deepest rocks ever seen have been recovered by Australian and American researchers. They were found at the Earth's surface on the island of Malaita, east of Papua New Guinea. But they originate from deep within the planet, between 400km and 670km down. This is about twice as deep as anything studied before.

These depths are an important region of the planet's interior, where sudden changes in the densities of rocks occur.

The discovery should reveal new information about the chemistry and large-scale movement of material passing through this transition zone between what is known as the upper and lower mantle.

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