Long overdue update on the Jeep and relevant life. I replaced the front O2 sensor and the engine light went out and the Jeep is GOOD. Power isn't where I feel like it was when I started driving it, but much better than it was. I'm cranking out about 19.5 mpg between interstate and mountain backroads, and around 17-18 locally combined interstate/mountains/off-road. I can get about 300 miles out of a tank now. Its running seriously good. Aside from the minor rear pinion? leak that started this December and the 1st gear pop the drivetrain is pretty mint. I'm pretty stoked.
We took a camping trip out to SW Virginia for my sed/strat class over Easter weekend. I drove myself as it was a pretty quick jaunt down to be home for church/family on Easter Sunday, and the Jeep was flawless. We stopped at road cuts along the way and talked about the paleoclimate/environment of each spot, did some stratigraphic mapping, and collected hand samples from the sites. I turned in all my notes for our final trip report but I'll do my best to give a quick rundown of the trip. Apologies for the sideways pictures, I wish I could figure out how to make them correct.
Stop 1: Cambrian Carbonates ~500Ma
Indicative of shallow seas after snowball earth. Can see mudcracks, ripples, stromatilite fossils (round features at top of formation)
Stop 2: Mapping formations (rock units)
Grenville, Taconic and Acadian orogenies (mountain building events) and associated rifting/passive margins between orogenies. ~500-300Ma Mudstones, sandstones, shales, cherts.
"Great Unconformity"~40Ma of missing time
Another unconformity. You can see a squiggly dark line near the top; that's an volcanic ash layer.
We made camp that night in Hungry Mother State park. They had cool elevated decks to set tents on due to the steep terrain. We made a huge fire in tiny fire pit and life was good.
Stop 3: Proterozoic Conglomerates ~750Ma
Conglomerates formed from Cranberry Gneiss (~1400Ma) by a mountain stream, probably similar to the one below during the first Appalachain mountain building event (Grenville Orogeny)
Remaining stops: Proterozoic glacial lake deposits ~500Ma
These were my favorite stops of the trip. We made several stops along an ancient lakebed. I have a ton of cool hand samples from this trip I'll try and remember to take pictures of to show y'all. Some things we saw:
-Annual lake layering. So cool to see individual years from that long ago, just crazy.
-Dropstones. Rock carries over water by ice then released to fall to the bottom as ice retreats. Dope.
-Turbidites. Think of them as underwater landslides. They have distinctive fining characteristics as they settle in water.
-Regional fining (particle size distributions based on source distance.
I'll get some hand samples of all those uploaded soon. I swapped rides with my brother again so I'd have a truck bed to move out. Next year I'll pack lighter haha. In the meantime I took a couple shots around campus with the ol ElCo, thought they were pretty neat.
I love being back home, but I'm already itching to get back to school. More updates coming!
**EDIT it won't let me add photos, did them though the attachment like usual. Working on fixing it if I can