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Post by snowmom on May 22, 2015 5:56:41 GMT -5
A while back after Jamesp posted photos of the impactite and other rocks I sent him, I sent a box of similar material to Fantastic5 (Ann). We had been kicking around identity of some of the stuff found here and all of us having curious minds were hoping to find IDs of some of those rocks. Ann cut samples and took them to a friend and colleague, Wayne, who is a geologist by profession. Wayne took the time when not involved in his professional pursuits to prepare slides and samples for examination and Ann got to see them examined and hear them explained. She took copious notes and they sent me an analysis of 9 different samples. 3 of them were impactite, and the others had surprises. The first to be examined was this one : forum.rocktumblinghobby.com/thread/68871/red-green-mystery
Quoting the report : Amygdaloidal basalt- fine magnetite rich matrix filled with small plagioclase crystals. voids are filled with epidote, chalcedony and jasper.
I am going to make several separate posts to this thread as I have tried to make one long post a couple of times and lost it all due to a misplaced finger on the keyboard. more to follow
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Post by snowmom on May 20, 2015 5:34:52 GMT -5
Spiritstone, my mom grew up in Arizona and didn't see snow until she was in high school, it used to be common experience for many people in warmer areas ( US and other countries) never to have experienced ice or ice cream and other frozen products many cold weather folks take for granted. Electrification of rural areas of the USA made the experience more available to everybody as refrigeration became more common. On first feeling extreme cold many people are said to have exclaimed that it was HOT! They had to learn how to interpret the input from their sense of touch.
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Post by snowmom on May 20, 2015 5:18:47 GMT -5
second one seems to be petrified bacon , that last one is so cool! Lots of color and variety, lucky you to find so much agate right there. Yes, worth cutting, keep them coming.
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Post by snowmom on May 20, 2015 5:16:23 GMT -5
sweet blue in there!
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Post by snowmom on May 20, 2015 5:15:28 GMT -5
beautiful!
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Post by snowmom on May 20, 2015 5:12:02 GMT -5
bowlerite. oh my! pretty color- its really neat. I had to google it. clever use of abundant materials. I saw about 20 bowling balls for sale over the past 10 days, hitting resale shops and garage sales with guest to the area. They were averaging about $4 each.
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Post by snowmom on May 20, 2015 5:05:36 GMT -5
beautiful surroundings, I love how we can see the folding of the mountains in that last photo- just gorgeous, and so interesting to a flatlander! Really cool finds, they look polished already. thanks for taking photos and sharing the fun!
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Post by snowmom on May 20, 2015 4:54:36 GMT -5
en.wikipedia.org/wiki/Equisetumit is in its own classification, I think the term rush is used colloquially. but all stems and branches are rounded and segmented, and they are quite tough. pretty neat living fossil.
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Post by snowmom on May 19, 2015 6:47:47 GMT -5
I have noticed that there is a point where really radical people on the left stand back to back with the really radical people on the right. the lines drawn seem to come full circle sometimes.
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Post by snowmom on May 19, 2015 6:37:51 GMT -5
1daves post about perceiving and reading words made up of other symbols ( understanding others and ourselves) reminded me of mirror writing, upside down reading and writing. That made me think about upside down drawing. That made me remember" Drawing on the Right Side of the Brain" by Betty Edwards This book was such a huge insight and help for would-be artists when it came out years ago, repeating popular theory of the time that creativity was primarily the function of the right hemisphere of the brain while logic was primarily a function of the left.
www.drawright.com/ many of the drawing exercises presented here are still in use as a way to develop perception and creativity in those who draw. The book has been updated recently and reflects some of the clarified thought on left/right hemispheres of the brain and also presents some new exercises.
Do you use the left and right sides of the brain equally, or can you recognize yourself as using predominantly one side or the other?
Since the release of the original book much has been learned about the way the brain works and it is understood that the hemispheres work together, function is not isolated or solely the property of one hemisphere or the other, though common belief still sometimes perpetuates that myth.
psychology.about.com/od/cognitivepsychology/a/left-brain-right-brain.htm
It is still interesting to try some of the exercises in the book to see how it changes your ideas about drawing. From our first attempts to draw figures (remember the stick figures you made at age 5 or 6?) our mind is processing and learning to interpret the things it sees. Small children ask their parents to reach down the moon from the sky, not having learned how to perceive it and all of its properties. representing 3 dimensional objects in 2 dimensions provides an even more complex puzzle for the brain. Oliver Sacks has a great series of books on neurological abnormalities and their effects on perception and behavior. www.oliversacks.com/
From savant artists to blind people who believe they can see, people who see objects or humans and identify them as something other than their true nature, people who are incapable of recognizing their faces and the faces of others, many other interesting neurological disorders are profiled by real life examples from his neurological practice, all pointing out the wonders of our brains and what happens when something goes wrong.
anybody have further interesting reading to recommend on the subject of perception?
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Post by snowmom on May 19, 2015 5:49:38 GMT -5
awesome trip, thanks for taking us along.Paddlefish and sturgeon both so ancient and prehistoric. amazing living fossils! Can't wait to see what the rocks you hounded look like.
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Post by snowmom on May 19, 2015 4:14:56 GMT -5
The more I see of them, the more I like them. looks great!
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Post by snowmom on May 18, 2015 5:44:54 GMT -5
so beautiful!
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Post by snowmom on May 18, 2015 5:43:50 GMT -5
shoulda put on my shades before I opened this thread. dazzling!
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Post by snowmom on May 18, 2015 5:42:25 GMT -5
very pretty!
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Post by snowmom on May 18, 2015 5:40:43 GMT -5
beautiful! Love that red breccia- droolworthy for sure, and those nice fat hearts are beautiful!
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Hi...
May 18, 2015 5:38:21 GMT -5
Post by snowmom on May 18, 2015 5:38:21 GMT -5
welcome from MI, you came to the right place. Lots of good info here, glad you are with us!
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Post by snowmom on May 18, 2015 5:34:54 GMT -5
I was in gravel pits near Mazon as a child, waiting while my father went fishing. I picked up fossils, they were pretty abundant in those days. wish I still had them. I had one about the size of a quarter with a perfect maple leaf. so cool! If you check almost any resale shop or gift shop which sells items of local interest, and also antique type shops, you are likely to find some Mazon fossil ferns or leaves. I grew up taking them for granted but now of course realize what a unique phenomenon they represent. look for round, pancake like rocks that look like mud in red, grey or black. The ferns are more oval. when you split them open the fossil impression is inside. Rocks that look like buns or hamburgers usually have some sort of fossil impression inside them. There has been heavy rain in IL the last couple of weeks, rain may have washed outcrops and gulleys open to new material to hunt. Best wishes no matter what you decide to do, rock related activities are everywhere in northern il. especially fossil related ones.
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Post by snowmom on May 18, 2015 5:27:52 GMT -5
Horsetail are awesome. I've seen fossils of them, kinda cooler to have the living fossil! How interesting that it is the most popular plant there. Are they not native to your area at all? That might explain some of the attraction. In Il where I grew up and here in MI they are just part of the natural landscape.
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Post by snowmom on May 17, 2015 5:54:30 GMT -5
fun to do, also mirror reading and writing and reading it in a mirror upside down. The mind is truly amazing!
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