september 8, 2008 conglomerates - cas.umt.edu · autobreccia hyaloclastic breccia landslide and...
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G433 – Sedimentary Petrology
September 8, 2008Conglomerates
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Compositionally-based conglomerate classification
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Volcanic debris- and hyperconcentrated flow deposits
– Eocene Absaroka volcanics, Yellowstone
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Eocene Absaroka volcanics, Yellowstone
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Fluvial vs. alluvial conglomerates, Shoshone R. Canyon, Wyoming
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Stream-lain conglomerates, northern Yellowstone NP
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Flat-pebble conglomerate; Cambrian Gallatin Formation, NE Yellowstone
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Origin of flat-pebble conglomerates
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Glacial diamict
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Ice transportglacial moraine near
Polson, MT
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Madison Slide, August 17, 1959looking south towards breakaway zone
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Graham et al., 1987
Sphinx Mountain Conglomerate (Maastrictian), SW Montana
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Inverted stratigraphyduring unroofing;Graham et al., 1987
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Graham et al., 1987
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Graham et al., 1987