Chapter 8: Major Elements - Faculty web pages
Chapter 8: Major Elements - Faculty web pages
Chapter 8: Major Elements - Faculty web pages
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Mafic Assemblages of the High P/T Series:<br />
Blueschist and Eclogite Facies<br />
The mafic rocks develop conspicuous and definitive<br />
mineral assemblages under high P/T conditions<br />
<br />
High P/T geothermal gradients characterize subduction<br />
zones<br />
<br />
Mafic blueschists are easily recognizable by their color,<br />
and are useful indicators of ancient subduction zones<br />
<br />
The great density of eclogites: : subducted basaltic oceanic<br />
crust becomes more dense than the surrounding mantle