There’s a formational contact in this photo, and for many years, I misplaced it completely. Let’s see how well you do: can you spot it? Submit your answers by downloading the photo (right click; ‘save as’), drawing on the contact, saving your annotated copy, and then posting your version in the comments. Need more data? … Read more
Route 33 in Pendleton County, West Virginia cuts across the lower Paleozoic stratigraphic section. I went there this past spring on a sedimentology and stratigraphy field trip with the GMU sed/strat class. The trip was orchestrated by professor Rick Diecchio. Here are some scenes from two of the stops – the upper Ordovician Juniata formation … Read more
My former student James O’Brien recently moved out to the left coast, and posted some photos earlier this week of a hike he took at Mount Diablo State Park in the mountains east of the San Francisco Bay area of California. There are some classic-looking Franciscan cherts exposed there, as these folded examples show: Seeing … Read more
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
I don’t think I’ve featured this sample here before… It’s a lovely gneiss from near the trailhead for the Spanish Peaks, near Ted Turner’s Ranch in the Gallatin/Madison Range in southern Montana, not too far from Big Sky. Have fun checking it out in this macro GigaPan: [gigapan id=”161099″] link Happy Friday to all.
New LiDAR imagery for the Fort Valley reveals bedrock structures and subtle aspects of fluvial geomorphology.
Time for my book report: This week, I read (well, listened to) a fun history of the assassination of three American presidents. Yes, it’s simultaneously about political murder and is a fun read (well, listen). This is because of the author’s ideal mix of snark, intelligence, and obsession with the three stories discussed herein: the … Read more
Hi everyone, As the deadline for early registration for the annual meeting of the Geological Society of America nears, I’d like to call your attention to a suite of awesome field trips exploring mid-Atlantic region geology. If you’re traveling to the east coast for the first time for GSA, or if you’ve never ventured beyond … Read more
Hampshire Formation outcrops on Corridor H, West Virginia: [gigapan id=”178008″] link (Marissa Dudek) [gigapan id=”177198″] link (Callan Bentley) Faults in the Tonoloway Formation, Corridor H, West Virginia: [gigapan id=”176602″] link (Marissa Dudek) Conococheague Formation, showing stromatolites and cross-bedding: [gigapan id=”177155″] link (Callan Bentley) [gigapan id=”177355″] link (Jeffrey Rollins) Tiny folds and faults, from a sample … Read more
A new post on GeoSpace, a sister blog here at the AGU Blogosphere, calls attention to a new study by Simon Lamb and colleagues on the plate-boundary fault running through New Zealand’s South Island, the Alpine Fault. The post is apparently taken and lightly adapted from a press release on the Victoria University of Wellington … Read more