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Decade of the Pasty Cam on this day ^{Printed on Recycled Internet}

Which metal was mined at Caledonia?

Copper

Good morning! Some nice fall pictures today, but I especially loved Dan's "Stirred Up Superior"!!

Have a great day!

Growing up with horses since I was 5 yrs.old and still have them (11 of them) yet today, the two pictures of the horses are my favorites.

Nice set of pics!

Hey Mikie, you could have answered silver and got the ole' bird as well!!

Anyone else see this story or feel the 'earthquake'?


Unexplained crack splits Mich.

BIRCH CREEK, Mich. (WLUK) - A Michigan family's property has a sudden unexplained divide.

A large unexplained crack now runs 200 yards through the Salewsky family's property, eight miles north of Menominee in Birch Creek.

The family thinks it happened Monday around 9:00 in the morning. The ground raised five feet up, taking trees along for the ride.

Some cracks were up two feet wide and five feet deep.

"The house shook, the chairs shook," Doug Salewsky said. "The logs weren't there when I piled them."

Salewsky doesn't know what caused his backyard to split in two and neither do police.

There have been no recent reports of any earthquakes in the area. People specializing in geological surveying are being called in to try and explain the phenomenon.

Good Morning! Please vote and continue to vote every day this month for the Copper Harbor Ambulance Barn! Your votes all count! Last night we were up to 10th place, but alas, this morning, we are down to 13th place.
http://www.refresheverything.com/copperharborambulancebarn?utm_source=em

I saw a story on wluctv6.com this morning on the sudden crack, that appeared with a boom. There are pictures of it on wluctv6's web site. Capt Paul & Dr Nat, do you have some ideas on what caused this mystery?

Paul, somewhere in my early life someone gave me a bag of silver they had collected out of the stamp mill. Now if I could only find it. Pays to have an upset stomach this morning. Got the bird.

Great photos, especially from 2003 + 2009, and my wife likes the ones with the horses in them.

Heard that the "earthquake" was an old mine shaft that had collapsed????

I just got out of class and haven't had a chance to look into the mystery crack or even see any pictures of it or the area where it is located, so I can't really say much right now. I can say that sometimes in mass movements (especially rotational slides) uplift can occur in part of the slide. When I get home and have a little time to at least see a picture of the crack, maybe I'll be able to say more. But I have a student at the door. I have to go!

I’ve seen a few pictures now and watched a TV6 news story about the mystery crack. It is difficult doing geology vicariously. I wish I was there to get a better look at the topography, surrounding rocks, and the crack itself, but I’ll do my best with what I saw.

Depending on the topography of the area, my initial explanation of the rotational slide could still be a possibility. The bedrock of the area, however, is the Trenton Formation, which is dolomite. Dolomite can be dissolved by groundwater, so a collapse along a cave system is also a possible explanation for the crack. Land subsidence caused by groundwater withdrawal could also be the culprit. (In fact, in the American Southwest there are several large cracks in the ground that formed due to water withdrawal and the subsequent subsidence). I have checked with the USGS and no earthquake has been recorded for that area, so I think that explanation can be ruled out.

I will continue checking for more information about the mystery crack and if I find out something interesting, I’ll be sure to let everyone know.

Maybe this should be continued on the Geology Thread.

Just a thought..... J