Acknowledgments We thank Jason Huberty and Mary Diman for assembling our field trip web page. We would like to thank the field trip leaders Dick Ojakangas, Philip Fralick and Pier Pufahl for their invaluable insights into the depositional environments of banded iron formation and for expertly guiding us in the field. We would like to thank the Nasa Astrobiology Institute for funding received providing support for this fieldtrip. We would also like to thank the alumni of the Department of Geology and Geophysics for providing support for field trips in general and specifically our BIF field trip. We thank them for their continued financial assistance over the years. Photo credits Amalia Doebbert, Reinhard Kozdon, Clark Johnson, Rafael Perez, John Valley and Huifang Xu. |