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Post by jasoninsd on Dec 1, 2020 10:17:14 GMT -5
RWA3006 - Randy, I've got some pictures of a rock my father-in-law has. He asked me if it was coprolite. The stone's been cut and flat lapped, so it's not a "round" specimen. Do you mind if I post a couple pictures on here (or PM you) to see what you think? I believe it was found here in South Dakota, but I'm not sure of that. It was given to him by the same guy that gave him a Fairburn, so I'm assuming it was from western SD. I know you hound in WY, so I'm wondering if there's any dino poo over this side of the Black Hills? I'd love to find some poo other than the cow crap that's always around the areas I hound? LOL
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Post by woodman on Dec 1, 2020 10:24:56 GMT -5
Happy Thanksgiving everybody. We had our Thanksgiving dinner on the tailgate of the truck while in the coprolite hunting grounds. Went to a different and very remote area where we made some minor finds. Very enjoyable time spent and at least I didn't have to carry much back to the truck! I didn't anticipate getting back to cell range for days. At sundown we hopped in the truck to return to camp and went about 200 yards and a tire went flat. No problem, btdt many times and I thought I'd have it changed and on our way before it got dark. Wrong. Turns out my tire service didn't apply anti seize grease between the rim and hub on the last rotation. That sucker had welded itself on and I had my work cut out to get it off. I had a five foot steel prybar and no luck with that so I used the spare tire as a battering ram to knock the flat tire off the hub. After 20 minutes and a bit of cussing I finally knocked it off. Was actually worried about knocking the truck off the jack. We decided to return to civilization 60 miles away to get the tire into a tire shop in the morning. I'm a bit worried the puncture is bad enough the tire can't be saved. By tomorrow we'll be back out into the middle of nowhere. I can't wait. Lessons learned: Make sure your mechanic applies the anti seize compound. Second, I'm going to start carrying two spares when I go into really remote areas. I went to 10 ply tires to avoid flats. beautiful country.
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Post by 1dave on Dec 1, 2020 10:27:23 GMT -5
RWA3006 - Randy, I've got some pictures of a rock my father-in-law has. He asked me if it was coprolite. The stone's been cut and flat lapped, so it's not a "round" specimen. Do you mind if I post a couple pictures on here (or PM you) to see what you think? I believe it was found here in South Dakota, but I'm not sure of that. It was given to him by the same guy that gave him a Fairburn, so I'm assuming it was from western SD. I know you hound in WY, so I'm wondering if there's any dino poo over this side of the Black Hills? I'd love to find some poo other than the cow crap that's always around the areas I hound? LOL
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Post by woodman on Dec 1, 2020 10:30:09 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 1, 2020 11:09:23 GMT -5
RWA3006 - Randy, I've got some pictures of a rock my father-in-law has. He asked me if it was coprolite. The stone's been cut and flat lapped, so it's not a "round" specimen. Do you mind if I post a couple pictures on here (or PM you) to see what you think? I believe it was found here in South Dakota, but I'm not sure of that. It was given to him by the same guy that gave him a Fairburn, so I'm assuming it was from western SD. I know you hound in WY, so I'm wondering if there's any dino poo over this side of the Black Hills? I'd love to find some poo other than the cow crap that's always around the areas I hound? LOL Get those photos on here buddy!
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 1, 2020 11:16:54 GMT -5
RWA3006 - Randy, I've got some pictures of a rock my father-in-law has. He asked me if it was coprolite. The stone's been cut and flat lapped, so it's not a "round" specimen. Do you mind if I post a couple pictures on here (or PM you) to see what you think? I believe it was found here in South Dakota, but I'm not sure of that. It was given to him by the same guy that gave him a Fairburn, so I'm assuming it was from western SD. I know you hound in WY, so I'm wondering if there's any dino poo over this side of the Black Hills? I'd love to find some poo other than the cow crap that's always around the areas I hound? LOL Dave I love that video! Thanks.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 1, 2020 11:18:11 GMT -5
Bob, if I could get it in a MFRB it would be yours.
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Post by jasoninsd on Dec 1, 2020 11:27:10 GMT -5
Randy, thanks for having a gander at these. The main part of the rock has a "creamy" tan tone to the color. Other than that, it has the red streaks in it as well. I just realized I only have a couple pics and should have probably taken a few more...
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Post by woodman on Dec 1, 2020 12:00:26 GMT -5
Randy, thanks for having a gander at these. The main part of the rock has a "creamy" tan tone to the color. Other than that, it has the red streaks in it as well. I just realized I only have a couple pics and should have probably taken a few more... Nice Petrified wood!
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Post by jasoninsd on Dec 1, 2020 12:08:45 GMT -5
Randy, thanks for having a gander at these. The main part of the rock has a "creamy" tan tone to the color. Other than that, it has the red streaks in it as well. I just realized I only have a couple pics and should have probably taken a few more... Nice Petrified wood! Is that what this is??? I swear I'm never going to be able to identify petrified wood in this area...unless it LOOKS like a piece of wood! Thanks for the ID.
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RWA3006
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Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 1, 2020 12:55:50 GMT -5
I'd say Bob got it right. Nice looking stuff too.
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Post by 1dave on Dec 1, 2020 21:55:21 GMT -5
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RWA3006
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Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 1, 2020 22:37:32 GMT -5
Thanks 1dave now I'm going to need to study how the Sevier and Laramide orogenies interacted. Lots of detective work to sort out what happened, when it happened and what caused it all.
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Post by stephan on Dec 1, 2020 23:12:55 GMT -5
Is that what this is??? I swear I'm never going to be able to identify petrified wood in this area...unless it LOOKS like a piece of wood! Thanks for the ID. Very nice piece of wood. If you look closely, you can see the grain and rings. Not familiar with SD wood, but AZ wouldn’t surprise me with those reds
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Post by rockpickerforever on Dec 1, 2020 23:52:53 GMT -5
Randy, thanks for having a gander at these. The main part of the rock has a "creamy" tan tone to the color. Other than that, it has the red streaks in it as well. I just realized I onlyhave a couple pics and should have probably taken a few more... Nice Petrified wood! That is exactly what I thought it is. It just screams petrified wood, especially the second shot. A great piece even if it's not what you thought it was. Surprise, surprise!
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Post by jasoninsd on Dec 2, 2020 0:39:39 GMT -5
That is exactly what I thought it is. It just screams petrified wood, especially the second shot. A great piece even if it's not what you thought it was. Surprise, surprise! I thought I just needed reading glasses, but apparently I must need to get hearing aids as well because I couldn't hear it screaming anything! LOL. I swear I'll never be able to ID petrified wood around here! I called my father-in-law tonight to tell him...and you know what he said? He said, "That's what the guy told me it was when he gave it to me." I was THINKING, "Are you kidding me? Why didn't you say you were told what it was so I could've posted this in its own section on the forum? Why did you agree with me when I said it looked kinda like coprolite instead of giving me a hint it "might" be petrified wood! Arghhhh!" What I actually SAID was, "Yep. That's what it is." I swear he withholds information as well as rocks from me just to see my reactions! LOL Randy, sorry for hijacking/sidetracking the poop thread for this kind of crap! (Sincere, but I couldn't resist the last part... )
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RWA3006
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Member since March 2009
Posts: 4,577
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Post by RWA3006 on Dec 2, 2020 13:13:44 GMT -5
That is exactly what I thought it is. It just screams petrified wood, especially the second shot. A great piece even if it's not what you thought it was. Surprise, surprise! I thought I just needed reading glasses, but apparently I must need to get hearing aids as well because I couldn't hear it screaming anything! LOL. I swear I'll never be able to ID petrified wood around here! I called my father-in-law tonight to tell him...and you know what he said? He said, "That's what the guy told me it was when he gave it to me." I was THINKING, "Are you kidding me? Why didn't you say you were told what it was so I could've posted this in its own section on the forum? Why did you agree with me when I said it looked kinda like coprolite instead of giving me a hint it "might" be petrified wood! Arghhhh!" What I actually SAID was, "Yep. That's what it is." I swear he withholds information as well as rocks from me just to see my reactions! LOL Randy, sorry for hijacking/sidetracking the poop thread for this kind of crap! (Sincere, but I couldn't resist the last part... ) There's no derailing a thread that started off talkin crapp.
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Post by stephan on Dec 2, 2020 13:55:41 GMT -5
It’s on topic: it’s an unused, potential gastrolith.
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Post by 1dave on Dec 2, 2020 21:27:28 GMT -5
giw.utahgeology.org/giw/index.php/GIW/article/view/11/14ABSTRACT Although only recognized as a discrete stratigraphic unit since 1944, the Cedar Mountain Formation represents tens of millions of years of geological and biological history on the central Colorado Plateau. This field guide represents an attempt to pull together the results of recent research on the lithostratigraphy, chronostratigraphy, sequence stratigraphy, chemostratigraphy, and biostratigraphy of these medial Mesozoic strata that document the dynamic and complex geological history of this region. Additionally, these data provide a framework by which to examine the history of terrestrial faunas during the final breakup of Pangaea. In fact, the medial Mesozoic faunal record of eastern Utah should be considered a keystone in understanding the history of life across the northern hemisphere. Following a period of erosion and sediment bypass spanning the Jurassic–Cretaceous boundary, sedimentation across the quiescent Colorado Plateau began during the Early Cretaceous. Thickening of these basal Cretaceous strata across the northern Paradox Basin indicate that salt tectonics may have been the predominant control on deposition in this region leading to the local preservation of fossiliferous strata, while sediment bypass continued elsewhere. Thickening of overlying Aptian strata west across the San Rafael Swell provides direct evidence of the earliest development of a foreland basin with Sevier thrusting that postdates geochemical evidence for the initial development of a rain shadow. New dinosaur species reported in the mid-1990s led to a rush of researchers from many institutions prospecting for dinosaurs in the Cedar Mountain Formation. Brigham Young University, Utah State University Eastern (formally College of Eastern Utah) Prehistoric Museum, Denver Museum of Nature and Science, Dinosaur National Monument, Oklahoma Museum of Natural History, North Carolina Museum of Natural History, The Field Museum (Chicago), and the Utah Geological Survey are just some of the many research groups presently looking for fossils in these rocks. A wealth of new fossil sites (figure 4), along with radiometric ages, have established that this relatively thin layer (normally less than 100 m) of Lower Cretaceous Cedar Mountain Formation, which separates thousands of meters of Jurassic rocks from thousands of meters of Upper Cretaceous rocks, is more complex than previously thought. Additionally, it preserves nearly 30 million years of what may be the most intriguing episode of dinosaur history, apart from their origin and extinction. These studies have in turn spawned additional directions of research in taphonomy, sedimentology, tectonics, geochemistry, radiometric dating, and paleomagnetics. In addition to dinosaur bones, fossil dinosaur egg-shells (Jensen, 1970; Bray, 1998; Zelenitsky and others, 2000) and tracks (DeCourten, 1991; Lockley and others, 1999, 2004, 2014a, 2014b, 2015; Wright and others, 2006) have been identified at several stratigraphic levels 107 The Lower Cretaceous in East-Central Utah—The Cedar Mountain Formation and its Bounding Strata Kirkland, J.I., Suarez, M., Suarez, C., and Hunt-Foster, R.Geology of the Intermountain West 2016 Volume 3 throughout the Cedar Mountain Formation. While not directly expanding the known diversity of dinosaurs from these rocks, these discoveries are adding considerable ecological and behavioral information concerning Cedar Mountain dinosaurs. Kirkland and others (1997, 1999) used the distribution of specific dinosaur faunas (groups of dinosaurs living together) and their relationship to distinct rock types to define four additional members of the Cedar Mountain Formation. In ascending order, these are the Yellow Cat Member, Poison Strip Sandstone, Ruby Ranch Member, and Mussentuchit Member. Together with the Buckhorn Conglomerate Member, these rock units and the fossils they contain are shedding light on the previously obscure Early Cretaceous history of Utah (figures 4 and 5). Please note that the Poison Strip Sandstone of Kirkland and others (1997) is herein renamed Poison Strip Member (see the Poison Strip Member section below for details). Six dinosaur faunas are now recognized within the Cedar Mountain Formation on the basis of changes at the genus and species level. More substantial faunal breaks at higher taxonomic levels provide a natural three-fold division that appears to have greater paleogeographic and evolutionary significance (Kirkland and others, 1997, 1999). The lower (“polacanthid”) faunal division is grouped together based on presence of polacanthid ankylosaurs, spatulate toothed sauropods, basal styracostern “iguanodonts,” and large dromaeosaurine dromaeosaurids, and is recovered from throughout the Yellow Cat and Poison Strip Members. The medial (“tennontosaurid”) faunal division is characterized by nodosaurid ankylosaurs, slender-toothed titanotosauri-form sauropods, and basal iguanodonian tennontosaurids, and is restricted to the Ruby Ranch Member. The upper (“Eolambia”) fauna division is restricted to the Mussentuchit Member and is dominated by the hadrosauroid iguanodontian Eolambia, having a mix of faunal holdovers from the medial “tennontosaurid” fauna and new faunal elements derived from Asia (Kirkland and others, 1997, 1998, 1999; Kirkland and Madsen, 2007). As described in subsequent sections, the lower fauna appears to be divisible into three sequential faunas and the medial fauna into two sequential faunas. These three distinct dinosaur faunal divisions match three “chronofacies” based on detrital zircon age distributions from 100 randomly dated zircon grains extracted from sandstones in these intervals (figure 6). 110 The Lower Cretaceous in East-Central Utah—The Cedar Mountain Formation and its Bounding Strata Kirkland, J.I., Suarez, M., Suarez, C., and Hunt-Foster, R. Geology of the Intermountain West 2016 Volume 3 Following methodologies developed by Dickenson and Gehrels (2008), chronofacies is a proxy for grouping strata based on similar aged source rocks (Lawton and others, 2010; Hunt and others, 2011). These three dinosaur faunas have a somewhat restricted distribution geographically. The lower polacanthid fauna is only documented in the Yellow Cat and the Poison Strip Members in Grand County, Utah. Of the 496 Cedar Mountain localities recorded for Utah in the UPLD, 302 are in Grand County. The middle “tenontosaurid” fauna is present wherever the Ruby Ranch Member of the Cedar Mountain Formation has been documented, but is only known from a few scattered localities largely due to the difficulty of prospecting for bone fragments amongst the carbonate debris covering many exposures of this member. The upper Eolambia fauna is only known from the Mussentuchit Member on the western side of the San Rafael Swell in Emery County and at very limited exposures in Sevier County (three localities). Emery County includes 167 of the known Cedar Mountain fossil localities making Grand and Emery Counties clearly the focal point for Lower Cretaceous paleontological research in Utah.
Forty-nine km (30 mi) east of Green River, a multitaxic Early Cretaceous dinosaur fauna is preserved below the marker calcrete and immediately above the chert interval in the Doelling's Bowl bonebed (figure 16). The occurrence of these new dinosaur taxa raised the possibility of testing the hypothesis that the calcrete, although not representing the K-1 unconformity, at a minimum represents evolutionary time as dinosaur genera turned over fairly rapidly, on the order of every 1 to 10 million years (Dodson, 1990; Wang and Dodson, 2006; Brusatte, 2012; Bensen and others, 2014; Starr-felt and Liow, 2016). This hypothesis may be tested by examining related species in different dinosaur clades occurring above and below the calcrete (Kirkland and others, 2012).
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Post by jasoninsd on Dec 2, 2020 22:39:26 GMT -5
Oh my gosh!!! That looks just like the picture of my gall stones I had this summer!!!
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