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#Mineral Deposits of the Midcontinent Rift System | @USGS Geonarrative | #geology #StoryMaps

A Geonarrative by the US Geologic Survey using ESRI's StoryMaps platform. About 1.1 billion years ago tectonic forces were ripping the Noeth American continent in half--for a modern analog think East African rift zone. The rift process failed but not before a wealth of metallic mineral deposits--nickel, native copper, copper sulfide, silver, uraniun, iron oxide, cobalt, ...--were empced along the northern section of the rift zone.

This Geonarrative intoduces the MidContinent Rift System (MRS), describes both magmatic and hydrothernal deposits associated with it, introduces a new MRS geologic database, and offers additional resources.

midcontinent rift

h/t StoryMaps - a brave new tool for geoscience outeach, @AZGeology 


What's Under Your House - Map: Minnesota DNR

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New Insights into North America's Midcontinent Rift | @AGU_Eos | #MN #geology

Formation at a plate boundary, a hybrid rift, how it evolved, seismic imaging surprises, hot spot supply excess magma? failure, other insights into other rifts and continental margins, and geology effects on culture (video clip). NSF grant and CC BY-NC-ND 3.0 h/t @earthscienceguy

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MGS Map S-21: Bedrock Geology of Minnesota

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