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Author: Subject: Geology I D anyone?
BajaBlanca
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[*] posted on 4-24-2014 at 12:21 PM


What a delightful thread.




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Mexitron
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[*] posted on 4-24-2014 at 12:35 PM


Quote:
Originally posted by BajaBlanca
What a delightful thread.


Yes it has a certain serpentine train of thought....;D
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[*] posted on 4-24-2014 at 12:50 PM


Quote:
Originally posted by Mexitron
Quote:
Originally posted by BajaBlanca
What a delightful thread.


Yes it has a certain serpentine train of thought....;D


How about serpentrine of thought?
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[*] posted on 4-24-2014 at 12:58 PM


Quote:
Originally posted by Whale-ista
Quote:
Originally posted by Skipjack Joe
I horde these rocks. Don't know what they are but to me they're beautiful.


Lovely! Nice looking piece of quartz.
Where did you find it? The location and surrounding landscape tells a lot.



This off the road to calamajue this time.

It's always proceeds in the same manner. You get out of the vehicle to pick up a rock. Then as you move further you find one that's better and you replace the old one in your pocket with a new one. This continues as your pockets fill up. Eventually you find one that's too big to fit into any pocket so you carry it in your hand. Meanwhile your partner is impatiently honking on your horn to get back to the car. Eventually the small rocks end up in the glove compartment and the large ones roll between the seats during the trip. Months later they end up in a basket in your bedroom, a basket you look at wistfully now and then and remember your last baja trip.
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DavidE
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[*] posted on 4-24-2014 at 01:06 PM


Nary a clue but that's an interesting specimen.

Way back on the northwest side of Las Tres Vigenes is a deposit of red obsidian.




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[*] posted on 4-24-2014 at 03:33 PM


I wouldn't take it for granite either, or it could be a leverite. But I can see the diamonds.
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Whale-ista
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[*] posted on 4-24-2014 at 03:48 PM


I try to limit my collecting to 1 or 2 nice/unusual objects per location, per trip. And I prefer the coastline to inland, at least when whales are around.

Not too many rocks in the lagoons, but I find other "treasures"- sea-polished glass for example.

The volcanic areas would definitely have more interesting finds!




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[*] posted on 4-24-2014 at 04:40 PM


Quote:
Originally posted by David K
Quote:
Originally posted by bajalearner
Quote:
Originally posted by David K
Maybe it's dinosaur egg painted for Easter?


Impossible. Dinosaurs lived before Jesus Christ so they would not have celebrated Easter.


I didn't mean the dinosaurs painted it... it could have been found millions of years later, then painted? :yes:


Did you really think you had to clerify that or are you throwing eggs at me?
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[*] posted on 4-24-2014 at 04:47 PM


it looks sedentary, if you axe me!



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[*] posted on 4-24-2014 at 04:59 PM


Boy, this is a Tuff one! Of Quartz, someone here knows must know the name of this rock! If you do, Pumice us that you'll post the answer! :lol::lol::lol: This is fun!!



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[*] posted on 4-24-2014 at 06:15 PM


Can't be conglomerate. That's a prison basketball team.
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[*] posted on 4-24-2014 at 07:45 PM


my cat said it's Agate.....



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[*] posted on 4-25-2014 at 05:52 PM


Don't be silly. No geologist can give you an accurate interpretation from a few photos. Geologists are trained to identify rocks by licking them. (BA, MS Geology)
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[*] posted on 4-25-2014 at 06:22 PM
Geologists rock


Quote:
Originally posted by Geo_Skip
Don't be silly. No geologist can give you an accurate interpretation from a few photos. Geologists are trained to identify rocks by licking them. (BA, MS Geology)






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[*] posted on 4-26-2014 at 11:04 AM


It's sometime tuff to ID rocks from pictures...

But this looks like a rhyolitic ignimbrite to me. Also known as a welded tuff, or solidified volcanic ash, or maybe even solidified rhyolitic breccia, as there are a lot of rock chunks in it.

Depending on the heat and the weight, the ash and chunks of rock from the volcano will be welded, or fused, into a solid rock. The more heat and weight the more tightly fused and less porous it will be. Sometimes it will be so hot the chunks of rock will be slightly metamorphosed, as evidenced by the lighter rings around the darker rock chunks in your sample. Generally the closer to the volcano, the more welded it will be, as distance will cool the ash as it falls.

This rock also rolled down a stream as a cobble, resulting in its current rounded appearance.




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[*] posted on 4-26-2014 at 12:39 PM


my guess is that it is metamorphic with the quartzite cross-bedding.

On the other hand, it could be an Indian Love Stone (just another F-R)




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[*] posted on 4-26-2014 at 03:59 PM


Quote:
Originally posted by bajabuddha
my guess is that it is metamorphic with the quartzite cross-bedding.

On the other hand, it could be an Indian Love Stone (just another F-R)



I'm going with sex stone.




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[*] posted on 4-26-2014 at 08:31 PM


Whatever it is, it rocks.
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[*] posted on 4-26-2014 at 10:46 PM


Quote:
Originally posted by bajalearner
Whatever it is, it rocks.


and given it's smooth, round shape, it has also rolled...




\"Probably the airplanes will bring week-enders from Los Angeles before long, and the beautiful poor bedraggled old town will bloom with a Floridian ugliness.\" (John Steinbeck, 1940, discussing the future of La Paz, BCS, Mexico)
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