⚒ Berkshire, Mount Whittlesey, Gogebic Range, Ashland Co., Wisconsin, US
Useful for image descriptions and collection inscriptions
Important: Before entering this or any other place of discovery you should have a permission of the operator and/or owner. Likewise it is to be respected that necessary safety precautions are kept during the visit.
Van Hise, C.R. & Irving, R. (1892). The Penokee iron-bearing series of northern Wisconsin and Michigan: U.S.Geol. Survey Monograph 19, 634 S.
Laybourn, D.P. (1979). Geology and metamorphism of the Ironwood Iron Formation, Gogebic Range, Wisconsin: Master of Science thesis Univ.Minnesota- Duluth, 223 S.
LaBerge, G. (1979). Stop 2 - Mount Wittlesey- Ironwood Iron Formation, in Mudrey, M. edited, Middle Precambrian geology of N Wisconsin: Wisconsin Geol. Natural history Survey Field trip guidebook 4: 15-19.
Cox, B. (2005). Mines of the Pewabic Country of Michigan and Wisconsin: vol.3, Wisconsin Iron: Agogebic Press: 52-53.
Cannon, W. , G. LaBerge, J. Klasner & K. Schulz (2007). The Gogebic Iron Range - a sample of the northern margin of the Penokean fold and thrust belt: U.S. Geol. Survey Prof. Paper 1730, 44 S.