You are browsing the archive for January 2017 - Mountain Beltway.
31 January 2017
Bucking the trend
It has been a stressful few days for the United States of America. Our President enacted a ban on people entering the country from several Muslim-majority countries, and it triggered confusion and protests at several international airports. A federal judge imposed a stay on the order, and yet Customs and Border Protection agents at Dulles Airport refused to abide, siding with the president instead. As Northern Virginia Representative Don Beyer …
Three kids’ books
Cosmology, evolution, and ethics for the four-year old set? It can be done! Join Callan for a brief review of three excellent books for children.
27 January 2017
Friday fold: the Bradshaw Layered Amphibolite
The Friday fold can be found along the Fall Zone, where crystalline metaigneous rocks of the Piedmont meet the gently sloping strata of the Atlantic Coastal Plain. Contemplate their high metamorphic grade and their tight folding, and imagine the mighty mountains that once rose on this spot.
26 January 2017
The scenic arch of Dore Holm (“Door Island”) in Shetland shows off the most efficient way of breaking a slab of rock. The island’s shape is a reflection of the parsimonious nature of natural deformation.
25 January 2017
Y-shaped joints on a basalt flow, Lake Mývatn, Iceland
A basalt flow in Iceland shows both enticing pahoehoe and fractures with a Y-shaped intersection pattern. Comparisons to bread loaves and east Africa suggest a reason why.
24 January 2017
Science policy in the Trumpocene
It looks like the Trump Administration is going to be tough on science. We all suspected that, but since Friday’s inauguration (now proclaimed by the new president as a “Day of Patriotic Devotion,” seriously taking a page from North Korea), there have been several incidents that raise serious, serious concerns. I’ve not been shy about expressing my upset and disdain on social media, though I worry that speaking honestly about …
20 January 2017
It’s Friday, time for a … discussion of the role of misinformation in the modern media landscape and civil society? Yep, no fold this week, folks.
In honor of the Inauguration, it’s our first ever Friday Fooled.
16 January 2017
Shear zones in Scottish gabbros
A quest to visit the “first shear zones” described in the scientific literature leads to an alternate location, and some GIGAmacro images of samples from the real, original spot.
13 January 2017
Friday fold: Smaull Graywacke at Saligo Bay, Islay
On the western coast of Islay, Saligo Bay showcases turbidites of the Neoproterozoic Colonsay Group. The Smaull Graywacke shows Caledonian (late Ordovician) folding and cleavage superimposed on world-class graded bedding. There’s also a nice dolerite dike to examine.
11 January 2017
More Messengers from the Mantle
Since I showed off the 3D kimberlite intrusion breccias yesterday, I feel as if I owe you some other photos from that lovely exhibit at the IGC. I apologize for the poor quality of these photos – the gorgeous samples were behind glass and brightly lit, which made photography difficult. But the rocks are sooooooooo pretty, I think you’ll enjoy viewing them just the same. Let’s start with a gargantuan …