Laurentide calf

2/20/23

Laurentide calf

https://newenglandhistoricalsociety.com/the-kettle-holes-of-new-england/
Kettle holes came about with the retreat of the Laurentide ice sheet, which covered much of Canada and the northern United States. The icebergs it left behind got covered with sediment until they melted.
Kettle holes dimple the landscape south of the Great Lakes, Adirondacks and New England mountains. They then end around the 37th parallel along the southern borders of Missouri, Kentucky and Virginia. Thorson calls them a “blue galaxy” within 19 “kettle states.”


Striations, or Striae

Glacial striations or striae are scratches or gouges cut into bedrock by glacial abrasion.
Large amounts of coarse gravel and boulders carried along underneath the glacier provide the abrasive power to cut trough-like glacial grooves. Finer sediments also in the base of the moving glacier further scour and polish the bedrock surface, forming a glacial pavement. Ice itself is not a hard enough material to change the shape of rock but because the ice has rock embedded in the basal surface it can effectively abrade the bedrock.

So as I see it, this glacier moved along this way, toward that valley, where it became trapped, and the parent glacier’s meltwater built sediment around it, where it became submerged, and further melted into the pond behind the garage, which has a bowl beneath where the water from this glacier feeds.  it s kettle pond, a place of legend.
thoreau’s walden pond is a kettle pond, 100 ft deep.
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this ice berg calf, crystals embedded beneath scratched, grooves, or striae into the rock, creating pattersn as the glacier calf passed. by on its way to becoming a pond or spring

striae or patterns cut into bedrock with subglacial crystals