The Geologic Column
Richard I GibsonGeology newsletter by Richard I. Gibson. Anything about geology, with a focus on minerals and tectonics.
| Platform |  | Pricing | Only free issues | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 406 | Founded | 5 years ago | Last Issue | 4 days ago |
| Active | |||||
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The Great Falls Tectonic Zone
Pinto Diorite, about 1,860 million years old, from north of Neihart, Montana. Given to me by Joel Dietrich. Token is about 4 cm across.
Life in the USA is not normal. It feels pointless and trivial to be talking about small looks at the fa...
Ostrea
Life in the USA is not normal. It feels pointless and trivial to be talking about small looks at the fascinating natural world when the country is being dismantled. But these posts will continue, as a statement of resistance. I hope you con...
Coquimbite
Three views of the same specimen. The sharp edge on the crystal at upper left in the left photo is 11 mm long.
Life in the USA is not normal. It feels pointless and trivial to be talking about small looks at the fascinating natural world w...
Salt crystal casts and molds
Life in the USA is not normal. It feels pointless and trivial to be talking about small looks at the fascinating natural world when the country is being dismantled. But these posts will continue, as a statement of resistance. I hope you con...
Jefferson River Thrust Faults
Deposit of geologists for scale.
Life in the USA is not normal. It feels pointless and trivial to be talking about small looks at the fascinating natural world when the country is being dismantled. But these posts will continue, as a state...
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| Subscribers | Engagement | 79 | Monthly Web Visits | ||
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| Accepts Sponsors | Estimated Cost per Ad | ||||
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Authors
The writers behind this newsletter.
I'm a geologist and historian living in Butte, Montana USA. Author of the History of the Earth Perpetual Calendar, What Things Are Made Of, and Butte Rocks.
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