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Post by txrockhunter on Jan 27, 2016 16:54:46 GMT -5
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jan 27, 2016 17:15:47 GMT -5
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,504
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Post by Sabre52 on Jan 27, 2016 17:23:01 GMT -5
Wow, awesome display! The woods are obvious and expected and some of the mossy ones are definitely very close to Rio Grandes in pattern. A few of the orbiculars look the same as Rios as there are a lot of orbicular agates there but man, I am befuddled by those yellow tube/eye agates. I've seen similar from Arizona but never seen those types from Texas. Only ones similar I've seen were from Mexico and I've never seen agate move upstream and east. *L* Some resemblance to some of the agates from the Mississippi River. Dang pretty but I'm left with way more questions than answers.
James: Yeah, Brazos was one of my theories too and a lot of the gravel in NW Brazos drainage came from points way further north....Mel
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snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jan 27, 2016 18:11:43 GMT -5
The Brazos is my neck of the woods and contains the same material as my area.I think a person would have to think out of the context of present day rivers and imagine great rivers eons ago,great floods and mighty rivers washing all the stuff to the Gulf of Mexico. snuffy
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,723
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Post by Fossilman on Jan 27, 2016 18:14:46 GMT -5
BOOM! and SCORE!!! Those are the bomb!! Very nice indeed!
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Jan 27, 2016 18:42:39 GMT -5
awesome show!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jan 27, 2016 19:18:37 GMT -5
San Jacinto River has supplied the sand and gravel to build most of Houston. It has been heavily mined and even had path changes. Maybe deeper ancient deposits have been uncovered and eroded out. Like snuffy mentioned, no telling what the ancient rivers brought in and where. I noticed on Google Earth where Jeremy is collecting on gravel bars that sand pits sprinkle the area.
Here in Atlanta they dredge the Chattahoochee river bottom for sand and leave the gravel. Silt is serious problem in the Chattahoochee killing vegetation and forests by filling forest bottoms along the floodplain. Lack of vegetation caused major erosion, river getting wider as the banks cave in.
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Post by beefjello on Jan 28, 2016 9:54:01 GMT -5
Man, a lotta nice finds there! Really cool watching you all unfold the mystery of this deposit! Based on the exterior, I thought this was going to be incredible. It ended up a little mediocre. Maybe I cut it wrong? I find lots of similar white patina nodules in the AZ desert that look like they're going to be killer inside, but turn out to be duds. Nothing to do with how you cut it.
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