petrology

A Petrographic Atlas of Ophiolite

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A Petrographic Atlas of Ophiolite ebook is available to be downloaded here now. The basic tenet of the plate tectonic paradigm is that a newly generated oceanic plate is subducted at a trench. However, it is widely accepted today that some material is not subducted, but is accreted to form an accretionary wedge or prism, … Read more

Nature Guide Rocks and Minerals

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You can download Nature Guide Rocks and Minerals ebook here. Rocks, like airplane flight recorders, store in their interior very useful happened in the past. Stones, found in mountains, folds, lakes, and oceans, hold clues to the past. By studying rocks, we can reconstruct the history of the Earth. Rocks, existing since the universe’s start, … Read more