Lecture_8_Provenance

Chert limestone mudstones sandstones monocrystalline

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Unformatted text preview: Litharenite Provenance & Q-F-RF Tertiary Diagram Other Clues: Metamorphic Source •  •  •  •  Polycrystalline (metamorphic) Quartz Strongly undulose Quartz Metamorphic rock fragments Heavy minerals associated with metamorphic sources –  Staurolite, Kyanite, Sillimanite, Andalusite, Garnet, Topaz Other Clues: Igneous Source •  Volcanic –  Volcanic Quartz –  Volcanic rock fragments (esp. glass) •  Plutonic –  Plutonic Quartz, Vein Quartz –  K- Feldspar •  Heavy minerals associated with mafic igneous rock –  Augite, Diopside, Ilmenite, Magne:te, Olivine •  Heavy minerals associated with alkaline igneous rock –  Apa:te, Bio:te, Hornblende, Monazite, Ru:le, Pink Toumaline Other Clues: Sedimentary Source •  Rock fragments, esp. chert, limestone, mudstones, sandstones •  Monocrystalline Quart •  Heavy minerals associated with re- cycled sedimentary rock –  Rounded Zircon & Tourmaline, Leucoxene, iron minerals, Barite First- vs Mul:cycle Sediments •  First- cycle sediments are derived from igneous or metamorphic source areas –  Reflec:on of mineralogy of source area depends upon: •  Distance of transport •  Climate (arid vs. humid), cold vs. warm •  Transport system (aeolian vs. subaqueous)...
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This note was uploaded on 03/24/2014 for the course GEO 401 taught by Professor Lassiter during the Spring '08 term at University of Texas.

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