We did a short hike to the Glacial Erratic at Rockefeller State Park Preserve (ny.gov) in Pleasantville, New York in Westchester County in the afternoon of Sunday September 15th. The granite rock is tilted 90 degrees from how it was originally metamorphosed deep beneath the Earth’s surface. There are white veins of lower meting po9int quartz that separated out during metamorphosis. 600 million years old. This mass of free-standing gneiss, almost 20 feet high and 65 feet in circumference, is probably the largest ”glacial erratic” to be found anywhere in the county. The glacier that transported the glacial erratic to Rockefeller State Park Preserve was part of the Late Wisconsin glaciation, which occurred approximately 20,000 to 25,000 years ago.
The activates look interesting. Maybe I’ll get a chance to try one or two.
Swan Lake is a lovely lake to walk around.
Thanks for taking us along on your walk, Sherry. So beautiful in fall. Very interesting about the glacial erratic and wow is it ever huge. Your second photo did a great job of showing its gargantuan size.
Hi Jet. I had to see the glacial erratic. I was a geology major. 🪨
This looks like a beautiful area. I like your photos a lot. Good job capturing the chipmunk, those guys are fast,
The chippy thought I couldn’t see him. 🙂
nice..
Thanks 🙂
Looks a great park, and love that chipmunk
Peek-a-boo 🐿
It is nice. I wish it was more accessible. Most of the trails are too long for me to hike.