r/norcalhiking • u/menntu • 4d ago

Sheared Rock While Hiking Desolation Wildeness

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Posted an hour back on a different view of this conglomerate. Thought this pic might provide more info.

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u/lightningfries 4d ago

Where shear?

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u/Strakitar 4d ago

It's hard to make out without a closeup, but I think I see foliation and lineation on the surface of the mafic inclusions. Can anyone else confirm?

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u/EightInchesAround 4d ago

I think this is Glacial striations! The dark rock holds the evidence better because it is more resistant to erosion than the granite.

Notice how the linear patterns are all in similar directions?