Yosemite Field Trip GEOL 2001 - CSU, Stanislaus Dr. Abbas Kimyai May 16, 1999
Home Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11	We see the Merced River cutting it's way through the valley floor. Here I'm looking back at the tunnel we just passed through to reach this point. Something was said here but I was too busy taking phots to hear what it was. Coming up on Ribbon Falls and El Capitan. This was taking from inside the van. Stop 7- El Capitan, the Three Brothers, and Cathedral Rock can be seen from this U shaped valley. Ice brought sediment down to fill this valley ñ a terminal moraine. Yosemite lake was formed. The valley contains over one thousand foot deep sediment which resulted from glacier or melt wash. El Capitan has no joints so no there is no noticeable weathering. Talus are the deposits left by weathering at the base of mountains. Bridal Veil Falls is to the south. Ribbon Falls is to the north. These falls result from streams in the surrounding hanging valleys. To form this valley one glacier came down the Merced River, another from Tuolumne Meadows. They joined in the valley carving it out. There are seven kinds of granite representative of the seven magmas that occurred. Granite, diorite are found in abundance.
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