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3 July 2014
It’s a fungi-eat-fungi world out there
Spotted in the yard this morning: One fungus (yellow, cracked like a breadcrust) being consumed by another (whitish, hairy wisps). Close-up portraits…
14 April 2014
Shadblow (serviceberry)
A sure sign of the advent of spring in Fort Valley is the blooming of the shadblow, an understory tree species with clusters of white flowers: My wife and I took our son for a hike yesterday, and the shadblow was pretty much the only tree with anything on its branches: I infer that shadblow is named for the fact that its flowers “blow” (bloom) when the shad swim upstream …
3 February 2014
Ice seeps along Passage Creek
This past week, there’s been a beautiful sight along the stretch of the Fort Valley Road that goes past the Blue Hole section of Passage Creek. Click to enlarge Ice has been forming beautiful forms as groundwater seeps out along bedding planes in the Massanutten Sandstone (a Silurian-aged quartz arenite, folded during late Paleozoic Alleghanian deformation). At this site, the bedding dips moderately to the south. This is close to …
29 January 2014
Frosty morning
It’s another cold morning in the Fort Valley. To celebrate winter’s continuing grip, please enjoy these images from last Friday morning, on my way to work… Frost on plants: Frost on barbed wire: Finally, here’s a time-lapse video (5 times actual speed) of the first 6 miles of my commute (walking, then driving): [vimeo=http://vimeo.com/85285064]
7 January 2014
Ice in the ‘hood
Some ice seen this morning, the coldest we’ve yet experienced at our home in the Fort Valley… 4° F when we got up this morning, with windchill around -15° F. Frost nucleated on a “petal” from a tulip tree (Liriodendron tulipifera): Frost on grass (note the different habit of the ice crystals here): Frost on some netting: Frost on some plant stems near a little creek on our land: Ice …
1 January 2014
2013 Yard List
Here’s our birding yard list (species seen in/from our yard) for the past year. You can compare it with 2012’s list here. Canada geese Goldfinch Tufted titmouse Dark-eyed junco Mourning dove Black-capped chickadee White-breasted nuthatch Downy woodpecker Hairy woodpecker Blue jay Brown creeper American crow Red-bellied woodpecker Pileated woodpecker Red-shouldered hawk Carolina wren Turkey vulture Eastern phoebe Turkey Purple finch Red-tailed hawk Northern flicker Barred owl American robin Eastern bluebird …
31 December 2013
Pipkrakes in the yard
Asbestiform ice is growing in our yard this week, with individual ice needles several inches long… Note the substantial pebbles that have been lifted up by the growth of these things – they’re powerful little crystals.
24 December 2013
Ichnology of a one-horse open sleigh
On my morning walk earlier in the month, I encountered this trackway: Those are percheron (big breed of horse) hoof-prints, and the tracks of an authentic one-horse open sleigh, like the one invoked in “Jingle Bells!” Our neighbor, Don Warlick of Secret Passage Ranch, brings the sleigh out for neighborhood fun when conditions are right… Photo by Paul Kosubinsky (Click to enlarge) We had a blast tootling around on it …
23 December 2013
Monday macrobugs: mating stick insects
Back in the fall, we saw a lot of sexy scenes among the stick insects on our land. Everywhere, it seemed, the smaller males were searching out larger females, and put gametes together to make the little zygotes that would grow into the next generation of these extraordinarily well-camouflaged insects… Here’s a pair on the side of the house: And, same pair, with a flash illuminating their nuptials… Note the …
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.