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<p>of <a href="page.php?w=thermodynamic">thermodynamic</a> data and experiments in order to better understand the origins of rocks.</p>

<p><big> Branches </big></p>
<p>There are three branches of petrology, corresponding to the three types of rocks: <a href="page.php?w=igneous">igneous</a>, <a href="page.php?w=metamorphic">metamorphic</a>, and <a href="page.php?w=sedimentary">sedimentary</a>, and another dealing with experimental techniques:</p>

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*<a href="page.php?w=Igneous_petrology">Igneous petrology</a> focuses on the composition and texture of</p><p>
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