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20 September 2013
Friday fold: recumbent fold at Two Medicine Lake, Montana
Here’s a photo from Tom Biggs (University of Virginia), taken on the NOVA Rockies field course last summer. It shows a recumbent fold along the Front Range of Glacier National Park, in Montana, just north of Two Medicine Lake. I hope you get some ‘recumbent’ time this weekend… I know I could use some rest. Happy Friday!
13 September 2013
Friday fold: Kink band in Lodgepole Limestone, Sacagawea Peak, Bridger Range, Montana
As I’ve mentioned previously, I spent some time making GigaPans this summer out west. Here’s Lily and me on the crest of the Bridger Range, enjoying the clear skies and great geology: When this portrait was taken (by our friend Lindsay), I was shooting this GigaPan: link Try exploring it to see if you can find today’s Friday fold: a kink band in the Lodgepole Limestone (a thinly banded unit) …
29 August 2013
Guest post: Glaciation in the Tetons
This is the fourth of several guest posts that appear here this week, all written by students who participated in this past summer’s Regional Field Geology of the Northern Rocky Mountains course. by Tony Robinson Old Dominion University [youtube=”www.youtube.com/watch?v=XTWNmUNbBBU”]
28 August 2013
Guest post: The Huckleberry Ridge Tuff in the greater Yellowstone area
This is the third of several guest posts that will appear here this week, all written by students who participated in this past summer’s Regional Field Geology of the Northern Rocky Mountains course. by Matthew Mann University of Virginia The Huckleberry Ridge Tuff is a 2.1 Ma tuff deposit that is centrally located in Yellowstone (Figure 1), but can be found throughout much of the United States (Figure 2). The …
27 August 2013
Guest post: The Belt Supergroup in Glacier National Park
This is the second of several guest posts that will appear here this week, all written by students who participated in this past summer’s Regional Field Geology of the Northern Rocky Mountains course. by Cate Pearson University of Virginia A drive along Going-to-the-Sun Road is an amazing experience for many reasons. To any traveller, the stunning vistas and landscapes are breathtaking. To the more geologically inclined, a journey through Glacier …
26 August 2013
Guest Post: Glaciation in Glacier National Park
This is the first of several guest posts that will appear here this week, all written by students who participated in this past summer’s Regional Field Geology of the Northern Rocky Mountains course. by Madeleine Rushing Northern Virginia Community College Sedimentary deposition typically is seen as horizontal strata, layered one on top of the other with oldest deposits on the bottom, getting progressively younger with each layer. Which makes sense, …
16 August 2013
Friday fold: Sandy Hollow, Montana
Today, a view to the southwest, from close to the hinge of the main anticline in the Sandy Hollow area, a classic geological field mapping locality in southern Montana: Triassic-aged Dinwoody Formation dominates the main part of the scene. Note how the strike and dip of the positively-weathering strata wrap around. Our Rockies students mapped here this past July, trodding on hallowed ground familiar to generations of field camp students.
1 August 2013
New Rockies GigaPannery
Several new GigaPans I’ve produced over the past few weeks in the Rocky Mountains of Montana and Wyoming: link link link link link link link link
14 July 2013
Rockies 5 concludes
My Rockies field course has wrapped up for another year – the fifth year in a row I’ve run this intermediate-level ‘regional field geology’ course in collaboration with Pete Berquist of Thomas Nelson Community College. We were fortunate to be joined by two other professional geologists this year: Chris Khourey of NOVA and Tom Biggs of the University of Virginia. It was a great group of students; no jerks among …
28 June 2013
Friday fold: Summer sample #1
First sample of the summer – a new “pocket fold” showing Paleoproterozoic deformation in the northern Laramie Range, Wyoming.
Callan Bentley is Associate Professor of Geology at Piedmont Virginia Community College in Charlottesville, Virginia. He is a Fellow of the Geological Society of America. For his work on this blog, the National Association of Geoscience Teachers recognized him with the James Shea Award. He has also won the Outstanding Faculty Award from the State Council on Higher Education in Virginia, and the Biggs Award for Excellence in Geoscience Teaching from the Geoscience Education Division of the Geological Society of America. In previous years, Callan served as a contributing editor at EARTH magazine, President of the Geological Society of Washington and President the Geo2YC division of NAGT.