Pdwight
has rocks in the head
Member since June 2003
Posts: 619
|
Post by Pdwight on Oct 17, 2003 14:35:16 GMT -5
This is a strange one; perhaps some of you folks can help me out here. Lets go back 37 years, I was 10 years old and didn’t like the water..still dont! Anyway my dad was launching his fishing boat at this remote inlet here in North West Alabama and while walking around the bank at the inlet to Big Bear creek I found some neat rocks..they looked like eggs ! but at 3 to 6 times the size of chicken eggs I could not figure what they were. I labeled them "Dinosaur eggs" in my childish mind I thought I had found something..so I took a few home....well like most kids they got broken open and there was a yellow core..or at least I remember it that way...but that was then and this is now. Today while driving back across the state I happened to go by the area and I thought...I wonder if they are still there or if I remembered it correctly. Well I drove down the road and found the exact launch site..even though there has been a modern boat launch built there, guess what >>>>>>>>>>>>> they were still there..not nearly as many but still there. The round egg shaped rocks are imbedded in what looks like mud that has turned into stone....I mean it looks like smooth river mud with the rocks imbedded. Now I know what you are thinking "Geodes: that is what I thought to..but a few were broken up and they appear more like sedimentary rocks..no crystals at all. I brought about 4 or 5 home with me and I took some photos of the area with the rocks imbedded in the stone. I don’t know how to post the photos..but if any of you ask I will email you some pics.
Thanks Dwight P
|
|
|
Post by hermatite on Oct 17, 2003 15:16:39 GMT -5
I think what you might have is a "thunder egg". Webster's dictionary says that geodes are hollow and have the crystals, while thunder eggs are solid. However both are a result of volcanoes. They were formed when air or gas bubbles were trapped in magma as the molten rock cooled. As the years passed, mineral laden water seeped into the cavities created by the gas bubbles and deposited minerals. The deposited minerals built up layers of rock over the years. So what you have might be one of these rock bubbles!
|
|
Pdwight
has rocks in the head
Member since June 2003
Posts: 619
|
Post by Pdwight on Oct 17, 2003 15:31:13 GMT -5
Not really disagreeing, but I have some thunder eggs and this is not one of them..its chaulky inside and easily broken.
Dwight P
|
|