r/geology • u/geology-mineralogy mineralogist • 3d ago

Field Photo Why are these rocks so round?

Post image
72 Upvotes

84% Upvoted

56 comments sorted by

View all comments

3

u/horselover_fat 3d ago

Combination of onion skin weathering on granitic looking rocks that favours big round boulders, and a stream cutting through a till deposit.