Yes I neglect this blog. I also neglect my website. Today I took tentative steps to set up a site, not a mirror site but an adjunct, that is more smart device friendly. I'll keep this one as well. Also, I sell on ebay. Take a look at ojhoff218
Rocks In My Head
My reading in the subject area of rocks, minerals, and gems has been, for nearly a year, in the area of birthstones. It's a subject that says a lot about human history. But to my way of thinking is somewhat less interesting than geology. So I have gone back to studying the book Minnesota's Geology by Richard W. Ojakangas and Charles L. Matsch. The subject is glaciation. Many terms describe what was left behind when glaciers moved across Minnesota during the Quaternary (2 million years ago to the present). One interesting term is erratics. These stones can be any size from a boulder to a pebble. They were transported from one area to another by the movement of glaciers. They differ from the local bedrock in color and composition, sometimes so radically they have been mistaken for meteors. I take an interest in these because the glaciers dragged in so much material to this local area. Also, I who am not a seasoned artist sold a painting of Finnish erratics to an employee of the Guggenheim, which was a thrill and honor. Since then I've read about erratics at length. Technically, if a rock was moved due to human activity, it's an erratic. By that definition, rockhounds have created a lot of these!
These pics show citizens' reactions to the ruling (and a lawsuit) that says you can't sell rocks off your property in Helga Township (Hubbard County, MN). My own reaction was to post a Genuine Helga Township Field Rock For Sale notice on my Facebook.
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