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1-10 of 59-
Rockies Tetons
callanbentley
108 views
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Book review of "Smithsonian Institution Secretary, Charles Doolittle Walcott"
callanbentley
50 views
Callan reviews a biography of the man who discovered the Burgess Shale
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Video book review of "Feynman" and "The Book of Genesis"
callanbentley
70 views
Callan reviews two cartoon books.
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GSA talk on my geoblog as a device for student retention
callanbentley
114 views
Callan gives his 2011 GSA talk on the role his geoblog plays in student retention.
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VID00668
callanbentley
32 views
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FriFold.wmv
callanbentley
124 views
Another video edition of the Friday fold: a kinked phyllite from Bonner, Montana.
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Primer assignment: Rockies trip
callanbentley
42 views
Callan describes the pre-trip "primer" assignment for students attending the summer regional field geology course in the northern Rockies.
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Gowganda tillite cobble
callanbentley
235 views
Paleoproterozoic glacially-generated cobble found in Pleistocene glacial deposits in Pennsylvania
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Magnetic field
callanbentley
412 views
Looking at the effect of a magnetic field introduced to the middle of a bunch of randomly oriented iron filings
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Friday fold: Migmatite from Orange Springs Farm
callanbentley
142 views
The Friday fold is a migmatite from Orange Springs Farm in the Piedmont province of Virginia
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