Jigsaw puzzle: New studies lend further evidence of dry times
Graphic By Tom Lowell
A seismic profile of the east lobe of Jigsaw Lake shows a flat-bottomed basin about 25 feet deep. Sediment core drilling shows one or more layers of lake sediments (mud) on top of a 1- to 2-foot-thick peat layer. The peat lies on top of well-sorted glacial sand that probably washed into the original kettle hole left by a melting block of glacial ice.
<< Prev 2 of 2
Return to Story
)
to vote to remove a comment. Three votes will hide a comment from view.
or 
)
to rate comments. These ratings do not effect the status of a comment.
ARTICLE LINKS:
Printer Friendly Version|
Email This Article
