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Chapter 12 - Layered Mafic Intrusions - Faculty web pages

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Stillwater Stratigraphy<br />

The Banded Series<br />

Sudden cumulus plagioclase →<br />

significant change from ultramafic rock<br />

types (phase layering again)<br />

The most common lithologies are<br />

anorthosite, norite, gabbro, and troctolite<br />

(olivine-rich and pyroxene-poor poor gabbro)

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