Callan Bentley This morning I’m on a flight to Denver, for the 125th anniversary annual meeting of the Geological Society of America. The annual GSA meeting is a special time of year for me, and for many geology professionals across the country. It’s an intense half-week of talks, sharing, learning, networking, hanging out with old friends, meeting … Read more
Over the summer, I shot these two GigaPans of the “Great Unconformity” in Wind River Canyon (Owl Creek Mountains), Wyoming: link link This week, Team M.A.G.I.C. (by which I mean my student Robin Rohrback-Schiavone) finished up a series of three macro GigaPans of rock samples from the site (made with our one-of-nine-in-the-world GIGAmacro rig by … Read more
Last week, we had two wildlife deaths at Fort Bentley. The first was a mole (cause of death unknown), and the second was a screech owl (hit by a car). Here’s the mole: A look aft, at the digging apparatus: What astonishing “paddles” it possesses! There forelimbs are easily five times the size of the … Read more
I finished Simon Winchester’s book Atlantic the other day. I consumed the audiobook version (this is one major positive aspect to my long commute: plenty of listening time), which was pleasantly read by Winchester himself. He’s got a good accent and a nice way of speaking – I recommend that medium. Atlantic is a book … Read more
I found one of these moths last week while moving some logs around out in the woods. It was a female (based on its antennae), and had a gorgeous color scheme of black and white with a wide yellow ^ on each of its wings, and lovely orange knees. I brought it back to the … Read more
The work of team M.A.G.I.C. continues. This is a lovely sample quartet of salt cast samples from Silurian-aged Tonoloway Formation limestone. I collected these samples on Corridor H’s newly-opened section west of Moorefield, West Virginia, last spring. The big one at the bottom was collected by my friend Leigh Henry, who graciously loaned it to … Read more
The Friday fold is a trio of hand samples of folded banded iron formation from South Africa. Collected in 2012 as float from the “contorted bed” outcrop in downtown Johannesburg, these samples are only now being cut and polished in the lab at NOVA.
Here’s a scene from last summer’s Regional Field Geology of the Northern Rockies course… students examining and sketching some tight folds in Cretaceous strata of the Western Interior Seaway, crumpled beneath the Dorado Thrust (a more southerly equivalent of the infamous Lewis Thrust to the north)… I’ve featured this site before, in a previous Friday … Read more
Today, I finished a book about earthworms. It wasn’t the greatest natural history book I’ve ever read, but it was the first one I’ve read specifically on the subject of worms. I’ve gotten interested in soil ecology and chemistry. Now that I own some land, I’m curious how to manage it for maximum productivity (both … Read more
Here’s a big plump female walking stick (“stick insect”) I saw last week… These bugs are all over the place right now. I frequently find them in flagrante delicto, with the smaller male mounted on the female’s back, and the tips of their abdomens pressed together.
A long time ago, I posted here an image of an “owlprint” – the pattern of duff left on a pane of window glass when a screech owl smacked into it. We’ve had a couple of new avian impacts lately out at Fort Bentley… Here’s a clear mourning dove imprint on the upper level window … Read more
I think this one of the most fascinating batches of sand we’ve yet had the pleasure of macro-GigaPanning: link So much igneous goodness hidden in those grains, collected from a beach on the south of Iceland… The image was made by Robin Rohrback-Schiavone (my student at NOVA) as part of the Mid-Atlantic Geo-Image Collection (M.A.G.I.C.). … Read more
I have two new GigaPans of hand samples to share with you this morning… The Edinburg Formation graptolites from Mint Spring, Virginia, that I featured here back in May, can now be explored in GIGAmacro hand sample: link Students: are these colonial or solitary organisms? Benthic, nektonic, or planktonic? Does this relate to their usefulness … Read more
A few weeks back, when I posted a few book reviews in a post on this blog, a reader recommended a book by Bernd Heinrich, The Snoring Bird. I checked my local library, which did not have it, and so I requested that they buy a copy. In the meantime, I thought back to the … Read more
Red argillite (Grinnell Formation?) and white quartzite strata from Glacier National Park, Montana. Heavily adorned with lichens… With bedding traced out… Happy Friday to you!
How do we get sick? Let’s make a list… Genetic disorders; those we inherit from our parents Injuries Environmental issues (obesity, diabetes) Infection by bacteria Infection by fungi Infection by viruses Infection by animals (tapeworms, etc.) Infection by protozoans (ameobae, dysentery, etc.) Infection by carcinogenic cells (e.g. Tasmanian devil contagious mouth cancers) That last one … Read more
Liquid jewels separated by green rubber bands – that’s what it looks like to me.
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. … Read more
Found this lovely garden spider while working in the yard on the last day of August… It’s a big beastie; here’s a pencil tip for scale: I induced her to briefly face upward: …but she definitely preferred to be oriented head-down: I then crouched lower, and aimed the camera up, resulting in a different exposure … Read more