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Digital-Desert :
Mojave Desert
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Joshua Tree National Park -
Mojave Ecozone: Geology Tour Road: Squaw Tank Dikes/IntrusionsThe light-colored bands of rock cutting across the monzogranite were formed when molten magma pushed through joints in the rock. Being of a harder material (aplite or pegmatite), dikes as they are called, are more resistant to erosion and weathering, and tend to protrude above the bedrock as low walls.PREVIOUS - NEXT
 Dike in Monzogranite |
| Intro:: Nature:: Geography & Maps:: Parks & Preserves:: Points of Interest:: Ghosts & Gold:: Communities:: Roads & Trails:: People & History:: |
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Digital-Desert :
Mojave Desert
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Some content is based on reconstructed historical context and has been reviewed for accuracy; interpretation may evolve. For educational use only; not a travel or safety guide. Copyright © Walter Feller, 1995–2026. All rights reserved. |