Wednesday, December 29, 2010

2008 Day 9 - Sept 21 mile 175.9 - 215.6 Opposite 3 Springs Camp Lava

Day 9 - Sept 21 mile 175.9 - 215.6 Opposite 3 Springs Camp Lava

Another beautiful camp to wakeup in

The moon provided early light

I woke up early and quickly figured out it must be Lava Day

Wayne's talk is about how lava dominated this part of the canyon

Talk done we hit the river and soon we see blocks of eroded lava

Mile 177.8 we approach a part of the canyon with numerous faults and associated lava flows created the scenery - in places it literally filled the canyon, was eroded, refilled - multiple times - and in other places more dikes of lava are seen

Mile 178 09:27 One lava pipe even erupted in the river and the remnant is named Vulcan's Anvil  -
 a dike can be seen to the side of the river.  These were all parts of the feeder system supplying volcanoes above.

09:45 approaching Lava Falls

09:47 Lava flows dominate the scenery - in places it literally filled the canyon

10:05 classic structure of slowly cooled basalt topped by a portion that cooled more quickly

10:23 here lava  flowed into the canyon from above

Mile 183.5 (approx) 10:35 great example of basalt columnar jointing - Wayne discussed at some length

Mile 186 10:37 we see remnants of volcanoes on the rim above  large flows ahead large cone is at Mile 187

Mile 189 schist island


Mile 187 detail of some of the jointing and flows

Mile 187.5 old channel filled with lava - this is part of the ancient Whitmore Wash (different angle than below)

Mile 188 view back upstream towards the ancient Whitmore Wash

Mile 196 12:00 Frogy Fault or Below Frogy lunch spot scenery

Mile 204.5 Below Spring Canyon Camp

Mile 212.9 14:54 Pumpkin Spring

As we approach our last camp site we see a great lava exposure - here the flow went down the old river on top of river gravels and Tapeats.  Later erosion of a new river channel cut thru these layers exposed here

Another angle with a better view of same exposure

Last camp on the river - Opposite Three Springs

End of Part 1 - Day 9 is done

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