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19 January 2012
Here’s two nice examples of mudcracks I saw used as paving stones in South Africa:
19 April 2011
I don’t have much time to blog this day/week/month, so here are two stromatolite images from downstream of Grinnell Glacier in Glacier National Park, Montana. This is the same area where I was attacked by a voracious stromatolitic Pac-man, of course. For more on the geology of GNP, see Filip’s post here.
30 November 2010
The author describes a quick visit to the Virginia Museum of Natural History in Martinsville, Virginia, on his way back to DC from Thanksgiving travel. Highlights: a dinosaur, a giant stromatolite, encrusting crinoids (they do that?) and a giant ground sloth.
28 October 2010
In honor of this month’s Accretionary Wedge (geoblog carnival; this month the theme is “deskcrops”), I recorded the following short video, showcasing some samples I have in my office: stromatolite (western Montana), conglomerate (Patagonia), schist (New Hampshire), anorthosite (New York), amygdular meta-basalt (Virginia), amphibolite (California), hematite concretions (eastern Montana), and a stretched-pebble lineated meta-conglomerate (Turkey).
23 August 2010
This is the second of my Rockies course student projects that I wanted to share here on the blog: it is a guest post by Filip Goc. Enjoy! -CB —————————————————————————– The Rocks around Glacier National Park, Montana: Introduction to the formations The geology around Glacier National Park is great for beginners because the area is structurally straightforward and formations are generally easy to distinguish. Still, there is a lot to …
19 August 2010
Let this be a lesson to you, kids. Don’t get too close to wild stromatolites, even if they are Mesoproterozoic… These exceptionally large stromatolites are on the threshold of the Grinnell Glacier, in Glacier National Park, Montana. No stromatolites or geologists were harmed during the production of this blog post. Photos by NOVA Rockies student Filip Goc.