Sylvan Lake Geology

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Sylvan Lake Geology

 

July 6 through 13, 2009

Sylvan Lake in the Black Hills of South Dakota.

We spent some time today at Sylvan Lake in the Black Hills of South Dakota. Sylvan Lake is one of the places you should visit when in the Mount Rushmore area. You should also plan to do the Needles Scenic Highway, Needles Tunnels, Iron Mountain Road, and Custer State Park when in the Black Hills.

 

We are camped near Custer State Park and the town of Custer in the southern part of the Black Hills at Custer's Gulch RV-Park. It is an OK commercial campground just like dozens of others in this area.

 

Click here to learn more about 1/2 price camping opportunities at PPA Campgrounds

 

 

Sylvan Lake

Sylvan Lake South Dakota

 

 

 

 

 

This large exposure of granite is protruding from Sylvan Lake.

 

 

 

 

 

Sylvan Lake

 

 

 

 

This is granite dike on the back side of Sylvan Lake.

One day we walked behind these dikes.

When visiting Sylvan Lake make sure to take time and enjoy the walk around the lake. There are some impressive formations on the back side of the lake.

 

 

 

 

Macklyn Fairchild posing with graninte spires at Sylvan Lake

Macklyn Fairchild posing with graninte spires at Sylvan Lake

 

 

 

 

Our friend, Macklyn Fairchild, looking back at me as we circle behind those granite spires at Sylvan Lake.

 

 

 

 

 

Sylvan Lake Granite exposure

 

 

 

You can see the course texture on these dikes of granite indicating they cooled slowly while still underground.

The the rate at which molten rock cools creates different rocks. Slow cooling under great pressure creates a course texture.

 

 

 

 

 

Sylvan Lake

 

 

 

 

A picture of Sylvan Lake taken from behind a pine tree.

 

 

 

 

 

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More South Dakota Adventures

Some Exciting Drives** More 2009 Travel Adventures

 

 

Mike & Joyce Hendrix

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