Invited Luncheon Speaker - December 1, 2009, Mark Jirsa, Minnesota Geological Survey

Ten Minutes of Chaos: The Sudbury Impact Layer in the Lake Superior Region

Abstract

This information can be downloaded at the following MGS link. article can http://www.geo.umn.edu/mgs/meteoriteimpact.pdf

Biography
Mark Jirsa is a senior scientist and geologic mapper with the Minnesota Geological Survey (30 years). He obtained a BS degree from the University of Wisconsin, and an MS from the University of Minnesota-Duluth (1980). His work utilizes the combination of geophysical, drill core, and outcrop information to improve and convey the understanding of Minnesota’s Precambrian terranes. Author of more than 50 maps and other publications.

Recent Projects
Lead compiler—State-wide bedrock geologic map and related digital data
Mapping in the areas of the Cavity Lake and Ham Lake forest fires (BWCAW)
Instructor for Precambrian Research Center field camp
Research related to the 1850 Ma Sudbury meteorite impact
Review coordinator and content editor for all MGS map products (15-20 maps/year)
Treasurer and current co-chair for the Institute on Lake Superior Geology

Mark Jirsa
Minnesota Geological Survey
2642 University Avenue
St. Paul, MN 55114-1057
Phone: 612-627-4780 X208
Fax: 612-627-4778

Mark was reared in Iowa and Wisconsin (making him the brunt of both corn and cheese-head jokes). He was trained in “classic” Precambrian and economic geology; receiving a BS degree from the University of Wisconsin-Eau Claire, and an MS from the University of Minnesota-Duluth. Mark is a senior scientist and geologic mapper with the Minnesota Geological Survey. His work over nearly 30 years utilizes the combination of geophysical, drill core, and outcrop information to improve and convey the understanding of Minnesota's Precambrian terrains. Born in Iowa, raised in Wisconsin, and transplanted to Minnesota--explains why he likes corn and cheese on his hot-dish.