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Wood Co., Wisconsin, USA

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Wood County consists of complex and intriguing Precambrian rocks, overlain by Cambrian sedimentary rocks in turn overlain by Pleistocene and recent sediments. The Precambrian rocks consist of older gneisses, overlain by meta-volcanic and meta-sedimentary rock, intruded by several generations of granitic rocks. The meta-volcanic rocks include several ultramafic bodies that have been worked for talc on a small scale. The rocks represent an oceanic and island arc sequence caught between colliding continents during the 1.8 to 1.85 billion year old Penokean Orogeny. A younger sequence of lower metamorphic grade Proterozoic quartzite, chert and argillaceous rocks is found as isolated mounds, most notable Powers Bluff County Park. Complex metamorphic rocks are also well exposed along the Wisconsin River at Wisconsin River.

Mineral List

Mineral list contains entries from the region specified including sub-localities


71 entries listed. 56 valid minerals.

Localities in this Region


The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Brown, B. A. & J. K. Greenburg (1986) Bedrock Geology of Wood County, Wisconsin: Wisconsin Geological and Natural History Survey, Information Circular, 1 sheet 1: 100,000.

Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/

Mineral and/or Locality  
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