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Field CollectingCollecting petrified wood in Missouri?
23rd Sep 2010 18:53 UTCCharles Calkins
Does anyone know of public locations to collect petrified wood in Missouri? I've found small pieces at the gravel bar at the Chain of Rocks on the Illinois side of the Mississippi River, just south of the I-270 bridge from Missouri, and have been told that they likely originate in North Dakota and have been transported by the Missouri River. As I live in St. Louis, North Dakota is a bit far for a day trip, but if there are any locations in Missouri where it is found natively, or places along the Missouri River that it accumulates, I would appreciate learning of them.
Thanks,
Charles
27th Sep 2010 01:13 UTCJim Angell
I live in Columbia and walk the surrounding creeks often looking for artifacts, fossils, petrified wood, etc. You can find it in many of these creeks. I have found it mostly in Hinkson creek. The fossilized wood we find here is left from the Pennsylvanian era and this is about as far east as it can be found because the strata layer it occupies dives deep below the surface from here east and in Texas the layer is several hundred feet down. The thing I like the most about it is that this wood lived 300 million years ago, while the fossil wood from the petrified forest is only 100million years old, amazing! I have several pieces of it and have seen some too large to carry home! Jim Angell
19th Oct 2010 04:55 UTCScott Galbraith
22nd Nov 2010 14:01 UTCJim Angell
31st Oct 2011 20:52 UTCGary Schimmelpfenig
2nd Jan 2012 18:39 UTCJim Angell
26th Jun 2012 00:54 UTCmark Isabell
20th Jul 2012 22:39 UTCTJ TURNER
10th Aug 2012 23:16 UTCStephen C. Blyskal Expert
You don't mention the size of the pieces you found at Chain of Rocks. Small pieces up to 3-4 inches can be carried great distances, especially during the glacial epochs when the rivers flowed much more than now. Here is Texas you can find small pieces of petrified wood hundreds of miles from their source, and in the case of the Rio Grande River gravels, much more than that. Most trees as we know them didn't make their appearance until the Mesozoic Era, and came into their own in the age of mammals, starting 60mya. Most "trees" found in the Pennsylvanian sediments are actually ferns that grew to tree size. Missouri, where I went to college as a geologist, has a lot of Paleozoic rocks exposed at the surface, particularly around St. Louis.
Also, the way most petrified wood is formed, by being buried in muds rich in volcanic ash (like in Texas), or being buried by volcanic eruptions of ash eliminates most formations older than the Cretaceous from consideration. The majority of extrusive volcanic activity occurred and is still occurring as a result of continental drift and the accretion of ocean sediments to the North America continent in the western part of the country. Think Rockies and Cascades. This started in the Cretaceous and is still occurring today (Mt. St Helens).
Hard, silicified pieces of petrified wood can survive long transport and it wouldn't surprise me that what you found came from the headwaters of the Missouri in the Rocky Mountains.
27th Aug 2013 01:31 UTCrock breaker
28th May 2014 16:22 UTCMicah Schroer
16th Jun 2014 16:48 UTCgerald branstetter
18th Mar 2015 19:46 UTCgerald branstteter
I am not an expert....This kinda thing fascinates me!
30th May 2015 21:46 UTCBill Hartman
I don't usually collect rocks unless it's a Petoskey stone from northern Michigan. A few weeks ago I was walking along the Silver Fork just outside of Columbia when I came across a this rock (see attachment) and I had this compulsion to identify it. I believe it is petrified wood/plant matter which lead me to this web site. I would really like if someone could confirm or redirect me so I can properly identify this rock. Thanks
30th May 2015 22:04 UTCBob Harman
30th May 2015 22:19 UTCBill Hartman
This picture had the following description, "Silicified "petrified" wood is formed when buried plant debris is infiltrated with mineral-bearing waters which precipitate quartz. This quartz infills the cavities within the wood and often replaces the woody tissues. This specimen is about four inches (ten centimeters) across and is from Yuma County, Arizona."
You can see the similarity on my earlier close up pictures. Still wondering what it is....
30th May 2015 22:46 UTCBob Harman
24th Aug 2015 04:25 UTCPatrick Phillips
Cheers
31st Oct 2015 20:00 UTCJulie grant
1st Nov 2015 04:26 UTCWayne Corwin
Your photos didn't attach,,,,, try again.
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