Click to enlarge Greetings friends … It’s been slow around the blog for some time now, and partly that’s due to being very busy with the spring semester, and partly due to a lack of inspiration. But I have been inspired to keep birding, and now that the books are closed on the semester, I … Read more
I’ve come to the end of my run of reading John Dvorak’s geology books. This is the fourth one for me to consume, but it was apparently the first he wrote. The topic is earthquakes, specifically those that occur along the San Andreas Fault in California. I’ve read a fair bit, it feels like, about … Read more
Click to enlarge Another month gone by… and spring migration is cranking along! I’m up to a 111 species in my county for the year so far. Migration is cranking right now, and there are lots of new species arriving each day (or just passing through en route to higher latitudes). I haven’t been making … Read more
Click to enlarge I’m still birding voraciously. I’m up to 89 species in my county for the year. So that means I added a dozen since last month. A few of those are freshly-arrived migrants from southerly climes, and some are just me putting in the time to go rack up waterfowl at nearby lakes. … Read more
Last week, I was lucky enough to visit Pushawalla Canyon in the Indio Hills region of southern California. There, my colleague Kim Blisniuk (San Jose State University) led our students through an exercise mapping alluvial deposits as a way of constraining offsets along the Mission Canyon strand of the San Andreas Fault. I noted that … Read more
Greetings from southern California! I’m running a spring break field course in the Mojave and Colorado desert. Here’s a pretty amazing fold pair in Palm Springs Formation, butted up against (darker) Mecca Formation along a fault. This is in Painted Canyon, in the Mecca Hills, a transpressional pop-up between the Painted Canyon Fault and the … Read more
Click to enlarge February has zipped by, but then again it’s a short month. I’ve continued birding intensively this month, so I’ll provide another update like I did last month. I’ve racked up 71 species this month, and pushed my 2023 total up to 77 (from January’s ending total of 66). The past few days … Read more
Trying to dredge up some blogging inspiration, but honestly I’m feeling underrested and overworked these days, and not particularly enthusiastic about writing. But here are some cool rocks I’ve seen lately; maybe you’ll find them interesting… Antietam Formation quartzite at Sherando Lake, Virginia: I was struck by how sugary the texture was, and the interesting … Read more
Reader Christian Gronau returns with another “guest Friday fold” submission. Christian writes, Greetings from a cold and wet west coast. A good time to root through old rock samples – and let the imagination run free … The little compilation below strikes me as visually compelling (both photographs are mine) – but how … Read more
A return to the “video Friday fold” format: