Friday fold: crinkled schist from Italy

AGU’s Chief Digital Officer Jay Brodsky offers up a fresh European fold for you today — and this one is on rather a smaller scale than Jay’s last Friday fold contribution… Click through for a bigger version. These are lovely crinkly folds in highly foliated rocks. I love boxy little crenulations like these. Jay tells … Read more

Beautiful Swimmers, by William Warner

The subtitle of this wonderful book is “Watermen, Crabs, and the Chesapeake Bay.” It’s an excellent account of crab ecology in the Chesapeake Bay as it stood in the mid-1970s, and simultaneously a sympathetic portrait of the lives of the locals who capture those crabs for sale to the seafood market. The writing is thoughtful … Read more

Mega-trace fossils in the floor of the Old Bushmills Distillery, Northern Ireland

We arrived at Old Bushmills at 4:06pm, and the last tour of the distillery for the day had left at 4:00. But all was not lost – We were delighted to see that the visitor center area was paved in slabs of shale with tremendously large, well-preserved trace fossils – sinuous burrows parallel to the … Read more

The Hidden Half of Nature, by David R. Montgomery and Anne Biklé

David Montgomery is a professor of geomorphology at the University of Washington, in Seattle. I’m a fan of his work in soil conservation and countering creationism, so I was very pleased to find myself sharing the “honoree” table with him in Vancouver the year before last, at the annual awards luncheon for the National Association … Read more

Animal, Vegetable, Miracle, by Barbara Kingsolver

Here’s a great book about one family’s efforts to eat as locally as possible for a year, sort of. Whether or not they’re evangelical enough in their southwest Virginia locavory (I would have made the same call with regard to olive oil and coffee!), Barbara Kingsolver and her family definitely are certainly inspiring. Their efforts … Read more

A History of the World in Six Glasses, by Tom Standage

This week’s book was a survey of human history, from the dawn of civilization to the Cold War, of the various ways that societal, health, political, technological, and economic factors drove the adoption of various beverages, and how the presence of those beverages in human society generated ripples of cause and effect, propelling advances and … Read more

Fold mystery – UPDATED

What can you tell me about this new fold sample I recently acquired? Width of sample is 12.5 cm. The face you’re looking at was cut but not polished. Here’s a close up: With layering annotated, to highlight the disharmonic nature of these folds: Anyone have any guesses what’s going on here? ——————– UPDATE —————— … Read more

Geology and wine in northern Virginia, part II: the Valley & Ridge

Callan attends the Geological Society of Washington’s fall field trip, examining the relationship between grape-growing and the underlying geology of two provinces in northern Virginia: the Blue Ridge and the Valley & Ridge. With GSW compatriots, Callan visited Hume Vineyards in the central Blue Ridge province and North Mountain Vineyard and Winery in the Shenandoah Valley. This is part II of the field trip report.

Geology and wine in northern Virginia, part I: the Blue Ridge

Callan attends the Geological Society of Washington’s fall field trip, examining the relationship between grape-growing and the underlying geology of two provinces in northern Virginia: the Blue Ridge and the Valley & Ridge. With GSW compatriots, Callan visits Hume Vineyards in the Blue Ridge basement complex and North Mountain Winery in the Shenandoah Valley. This is part I.

Convection in a dirty dish

Saw this in a greasy / soapy baking pan in my kitchen sink the other day: Do you see those lobe-shaped light areas, separated by dark septae? I think that’s the semi-gelled signature of gravitational instability, perhaps thermally driven. I’m speaking of convection: upwelling in the round light areas, and sinking of denser material in … Read more

The Omnivore’s Dilemma, by Michael Pollan

In the delivery room last week, while we waited for Lily’s labor to ramp up, I finished reading The Omnivore’s Dilemma, by Michael Pollan. I think it was one of the most insightful, important books I’ve ever read. I was pre-disposed to like it, because I really enjoyed Pollan’s earlier book The Botany of Desire, … Read more

Tofu with hackle fringe

We were making dinner last week and took out a block of “silken” tofu* with less care than we should have, and it broke. But what a break! The fracture showed a gorgeous elliptical joint face that broken up into a twisted series of hackles along its fringe: That’s something nice homogeneous fine-grained rocks do, … Read more

Buzzard Rock

Took a hike this morning with my bride-to-be, out to Buzzard Rock on the northeastern corner of Massanutten Mountain. There, we observed numerous boulders of Massanutten Sandstone float, many bearing charismatic cross-beds. Here’s one more slab of float, presumably weathered out along the main bed, showing gorgeous internal cross-stratification: A closer look at the left … Read more