Geology of Hartman Creek State Park Tour

  • Overview
  • Glaciers played a major role in the formation of the landscape of Hartman Creek State Park and the surrounding area. Learn all about this fascinating history on a guided tour with retired USGS geologist, Terry Gerlach.
    We will explore various parts of the park during this two-part program. In the morning the walk will highlight the processes responsible for our up-and-down, high-and-low, hill-and-lake landscapes and for our abundant deposits of silt, sand, gravel, cobbles, and boulders - sometimes as big as trucks!
    In the afternoon, we will visit Marl Lake, which resides in the southeast corner of the Park and belongs to the Upper Chain of the Chain O'Lakes. Here we will discuss what marl is, show its source in the glacial deposits surrounding the lake, and explain how its formation gives rise to the vivid blue-green color of the lake water. Then we will visit a few glacial geologic sites of interest just outside the Park.
    The morning portion will involve some walking (approximately 1 mile). The afternoon portion will include about 1/3 of a mile of walking, with some optional stairs. Much of the program will be driving with road stops.
    This program is free with park admission. Space is limited and this walk will fill up fast, so registration is required. You can register by stopping into the office, or by calling 715-258-2372. There will be 2 sessions for this exciting program. Please arrive a few minutes early so we may start on time. No pets please.
    Program times:
    10:00 am – 12:00 pm
    Break for lunch on your own 12:00 pm – 2:00 pm
    Walk continues from 2:00 pm – 4:00 pm
    Meet at the Beach Parking Lot
    Two sessions available - Saturday, July 14 AND Saturday, July 21

Geology of Hartman Creek State Park Tour
  • to
  • Hartman Creek State Park
  • Free with park admission