Ancient granite gneiss in the Black Hills, South Dakota

R. E. Zartman; J.J. Norton; T. W. Stern

doi:10.1126/science.145.3631.479

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Ancient granite gneiss in the Black Hills, South Dakota

R. E. Zartman·J.J. Norton·T. W. Stern

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Abstract

Granite gneiss, with an age of approximately 2.5 billion years, in the Black Hills, South Dakota , provides a link betweeen ancient rocks in western Wyoming and Montana and in eastern North and South Dakota and Minnesota. The discovery suggests that early Precambrian rocks covered an extensive area in northcentral United States and were not restricted to several small nuclei.

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Source-reported bounding extent: 42.479635° to 45.94531° latitude; -104.057698° to -96.436589° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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R. E. Zartman, J.J. Norton, T. W. Stern. 1964. Ancient granite gneiss in the Black Hills, South Dakota. https://doi.org/10.1126/science.145.3631.479

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