Geological Society of America's GeoTrip "New Year's at the End of the World: the Geology of Southern Patagonia Including Tierra del Fuego"

JR's Journal

Río Gallegos to El Calafate and Perito Moreno Glacier
December 30, 2001


 
We had a 7:30 wake-up call, an 8:00 breakfast, and a 9:00 departure.  Once again the incredible flatness of the Patagonian steppes impressed everyone.  We drove for more than 3 hours before reaching the edge of the Río Santa Cruz valley.  The day was crystal clear.  From the crest we could see the broad river 300m lower, and the jagged peaks of the Andes off to the west.  The most impressive peak was Cerro Fitzroy.  Lago Argentino looked a greenish-blue. 
 
 
This view looks northwestward across the Río Santa Cruz valley toward the Andes on the horizon. Barely visible 
in the haze at the foot of the mountains is Lago Argentino, one of many moraine-dammed finger lakes on
the east side of the mountains.

We descended into the valley and headed west for the final 30 km into El Calafate.  We drove to the Apart-Hotel Libertador on the main street and unloaded.  It is a nice place with a friendly staff.

Immediately afterward, we got on the bus and drove a block to wait for 20 minutes for a milanesa sandwich lunch.  It was good but was twice as much food as we needed.  We then drove 70 km westward to the front of the Perito Moreno Glacier.  Our guide, Soledad, told me of a new boat excursion that, for $20 per person, sails out to the glacier and stands just off of the 50-70 m wall of ice.  Almost everyone went for it.  It was fun to get that close to the ice.  We saw one good calving.  The boat ride lasted an hour. Just as impressive as the ice were all of the structures exposed on the shoreline of the lake.  After returning to the dock, we went up to the overlooks on the east side of the glacier.  I was focused in on a pretty blue ice block when it broke free and fell 50m into the water.  I got it all on video.
 
 

The first view of the Perito Moreno glacier is always impressive.

 
The boat excursion took us close to the ice. We hoped for a large calving
but only saw a small one. 

 
The overlook in front of the glacier provides the best views of the ice and
the glacially scoured landscape.

 
The Perito Moreno Glacier is a finger coming off of the Patagonian Ice Sheet, the
third largest ice sheet, after Antarctica and Greenland.

I was surprised how different the glacier is now from 1989.  It has ceased surging so it no longer blocks the channel between the north and south arms of the lake. For that reason, there have been no jokelhlaups since 1988. Because the south side of the lake’s level no longer fluctuates, there is significant exposure on the shoreline between the present lake level and the old high water level from the jokelhlaup days.

Everyone was very happy with the day.  We returned to the hotel at 8:00 and had dinner at an all-you-can-eat restaurant called “El Chino.”  During dinner word came that Presidente Saá had resigned.  All of the Argentines in the restaurant broke into applause. The comedy continues…

After dinner, I stopped by a restaurant and bought a bottle of wine which Greg, Sally and I drank to help us prepare for the big day tomorrow.
 

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