For today's trip, we carpooled to Utah, towards Cowboy Pass. The air was not clear; like Colorado, there've been fires burning in Nevada. The wind was up and humidity was down, so smoke blew across mountains and valleys from north Nevada.
|Robinson Ranch site|
|Searching the wash at the Robinson Ranch site|
We never became certain of the source rock, though we looked for it. While searching, I did find some interesting concretions to photograph. And Dennis found a curious lizard:
|Click for larger to see Lizzie|
|Holdfast? and branched solitary coral|
The second stop of the day was also in west Utah, Bishop Springs. This particular locality was a lone mound in a wide open valley.
|Bishop Springs site|
|An eye-catching concretion|
In several places, there were fossils in slabs too big and hard to bring home - beautiful horn
corals, interesting brachiopods, and a lone gastropod. The brachiopods were on concretions we speculated might have been part of a burrow system.
|Brachiopods (a few I circled) and possible burrows|
The slab of horn corals pictured below shows an interesting story of preservation. Apparently the center of some of these will be replaced differently than the outer portion. The center is replaced with chert which is harder than the source rock. As the source rock is worn away, the chert is left exposed.
|Interesting preservation of coral|
The final stop of the day was the Ward Charcoal Kilns. The kilns were used to burn wood into charcoal which was used in local smelters.
|Ward Charcoal Kilns|
Since I didn't get to this blog last night and am writing this in the morning, the weather has cooled. I am glad I am in a motel: