Contact Zone ♦ First Impressions
Trek dates: 2013 Sep 26 and Oct 13
The dark mountain rock on your right is Queen Mountain monzogranite. The lighter color rock is White Tank granite. The minerals crystallized from magma deep within the Earth, which forced its way into an earlier formation of metamorphic rocks 85 to 150 million years ago.
Where the two rocks touch, marks the edge of the two magma chambers—the contact zone. The granite broke through the surface of the ground over millions of years by mountain uplifting, underground chemical weathering, and finally, surface erosion. Now exposed, the granite today reveals eons of geologic history. Some of the balanced rocks in these pictures may have remained exactly as you see them for hundreds of thousands of years.
Area Covered in This Gallery
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3D Half Side-by-Side Gallery
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I appreciate your visiting the far east hillside of Wonderland of Rocks. Some outstanding things to see here, and yet virtually no one ever hikes here. Your time spent hiking will be rewarded many times over.
Posted 2015 Aug 11
Updated 2016 May 14