Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Origin <strong>and</strong> Differentiation of Magma<br />
• Source rock composition p - what rocks were<br />
melted?<br />
• Partial melting - produces magmas of<br />
different composition than source rocks;<br />
more felsic or silicic.<br />
• Fractional crystallization - increases silica<br />
content of remaining melt. melt<br />
• Magma mixing<br />
• Assimilation - xenoliths fall into magma<br />
chamber