Glacial striations, southern Central Park September 11, 2024March 6, 2010 by Callan Bentley New York City has some cool geology: Paleozoic metamorphics scraped by Pleistocene glaciers.
If you accept that ice is technically a mineral (and it is), that would make glaciers enormous rocks, and the above a form of slickensides. Reply
If you accept that ice is technically a mineral (and it is), that would make glaciers enormous rocks, and the above a form of slickensides.