SUTTONS BAY -- The Inland Seas Education Association will host a seminar about the underwater mapping of Grand Traverse Bay's mouth.
The free seminar will be presented by Luke Clyburn, president of the Noble Odyssey Foundation, on Jan. 13 at 7 p.m. at the ISEA's center, 100 Dame St. in Suttons Bay.
An underwater mapping project of the geology of the sill at the mouth of Grand Traverse Bay was done in 2004. The project led to the creation of the first geologic map of the bottom sediments and bedrock in that part of the lake basin.
The work led to the discovery of a drowned river channel cut through lake bottom clay at depths up to 150 feet. It's a channel from sometime between 10,000 and 7,500 years ago.
Clyburn will show a program that chronicles the preparation for and the fieldwork done during the expedition. He also will discuss the work's implications.
Call 271-3077 or visit www.schoolship.org for more information.
