Saturday 26 October 2013

America Day 8 - Saturday 12th October

On Saturday we examined the Pliocene (5.3 to 1.8 million years ago) Furnace Creek Formation down the road from the ranch. It’s composed of sandstones, mudstones, conglomerates (that’s a fine grained rock with larger grains within it that have been cemented together), breccias (that’s a fine grained rock with larger fragments of minerals and grains within it that have been cemented together) and basaltic lava flows. The units were deposited in a deep lake setting, which we worked out from the presence of ripple marks in some of the beds, and a few of them had been faulted during the deformation in Death Valley.

Furnace Creek Formation
At 12:10pm we went to Zabriskie Point, Gower Gulch and the western end of Echo Canyon Wash to look at some cool views and discuss some of the deformation that occurred in Death Valley. 

Zabriskie Point

Zabriskie Point
We also briefly discussed deformation on the Black Mountain Fault near Furnace Creek Inn, before setting off to the Valley of Fire campsite where we stayed for the night, which we got to at 5pm. This was an interesting night as the toilets were a hole in ground and wind ripped through the valley for most of the night! We did have a lovely time chatting around the campfire beforehand though.

Valley of Fire

Campfire

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