Geography of prospect park Neighborhood
(Notes from a neighborhood presentation by neighborhood geographer Karen Murdock, 2008-05-08.)
Physical Geography: Various Rock LayersPlatteville Limestone
Glenwood Shale - an aquitard (doesn't hold water); the "perched water" above the shale may flow out as springs.
St. Peter Sandstone - an aquifer (holds water)
The last ice age
The last Ice Age 12,000 years ago created most of our environments — glacial geography.
Tower Hill is a "kame" — old English for "mound of sand and gravel deposited by a glacier." The rest of Prospect Park is glacial till.
The Mississippi River Gorge formed by retreating water falls, a transient feature. The falls were at Ft. Snelling 12,000 years ago, and at Prospect Park 3-4,000 years ago. They are now St. Anthony falls in downtown Minneapolis.