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September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and...

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G433 – Sedimentary Petrology September 8, 2008 Conglomerates

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Page 1: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

G433 – Sedimentary Petrology

September 8, 2008Conglomerates

Page 2: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 3: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 4: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 5: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Compositionally-based conglomerate classification

Page 6: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Volcanic debris- and hyperconcentrated flow deposits

– Eocene Absaroka volcanics, Yellowstone

Page 7: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Eocene Absaroka volcanics, Yellowstone

Page 8: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Fluvial vs. alluvial conglomerates, Shoshone R. Canyon, Wyoming

Page 9: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Stream-lain conglomerates, northern Yellowstone NP

Page 10: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Flat-pebble conglomerate; Cambrian Gallatin Formation, NE Yellowstone

Page 11: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Origin of flat-pebble conglomerates

Page 12: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Glacial diamict

Page 13: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Ice transportglacial moraine near

Polson, MT

Page 14: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Madison Slide, August 17, 1959looking south towards breakaway zone

Page 15: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 16: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 17: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 18: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Graham et al., 1987

Sphinx Mountain Conglomerate (Maastrictian), SW Montana

Page 19: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 20: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 21: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 22: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 23: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 24: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Inverted stratigraphyduring unroofing;Graham et al., 1987

Page 25: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Page 26: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Graham et al., 1987

Page 27: September 8, 2008 Conglomerates - cas.umt.edu · Autobreccia Hyaloclastic breccia Landslide and slump breccia Explosive volcanic enlptions, either magmatic orÞeatic (steam) eruptions;

Graham et al., 1987

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