Search the Community
Showing results for tags 'uruguay'.
-
How Miners Find and Excavate the Most Expensive Amethysts in the World Abby Tang and Clancy Morgan, Business Insider, November 20, 2023. Some papers are: Duarte, L.C., Hartmann, L.A., Ronchi, L.H., Berner, Z., Theye, T. and Massonne, H.J., 2011. Stable isotope and mineralogical investigation of the genesis of amethyst geodes in the Los Catalanes gemological district, Uruguay, southernmost Paraná volcanic province. Mineralium Deposita, 46, pp.239-255. Morteani, G., Kostitsyn, Y., Preinfalk, C. and Gilg, H.A., 2010. The genesis of the amethyst geodes at Artigas (Uruguay) and the paleohydrology of the Guaraní aquifer: structural, geochemical, oxygen, carbon, strontium isotope and fluid inclusion study. International Journal of Earth Sciences, 99, pp.927-947. Hartmann, L.A., Wildner, W., Duarte, L.C., Duarte, S.K., Pertille, J., Arena, K.R., Martins, L.C. and Dias, N.L., 2010. Geochemical and scintillometric characterization and correlation of amethyst geode-bearing Paraná lavas from the Quaraí and Los Catalanes districts, Brazil and Uruguay. Geological Magazine, 147(6), pp.954-970. Hartmann, L.A., Antunes, L.M. and Rosenstengel, L.M., 2014. Stratigraphy of amethyst geode-bearing lavas and fault-block structures of the Entre Rios mining district, Paraná volcanic province, southern Brazil. Anais da Academia Brasileira de Ciências, 86, pp.187-198. Juchem, P.L. and Fischer, A.C., 2004. Agate and amethyst deposits in volcanic rocks of Paraná Basin, south of Brazil. Field trip guide book, ICAM 2004, International Congress on Applied Mineralogy, September 19 to 24,2004. Kigai, I.N., 2019. The genesis of agates and amethyst geodes. The Canadian Mineralogist, 57(6), pp.867-883. Svetova, E.N., Palyanova, G.A., Borovikov, A.A., Posokhov, V.F. and Moroz, T.N., 2023. Mineralogy of Agates with Amethyst from the Tevinskoye Deposit (Northern Kamchatka, Russia). Minerals, 13(8), p.1051. Yours, Paul H.
-
- 2
-
- amethyst
- amethyst geodes
-
(and 4 more)
Tagged with:
-
Hi guys! I went to look for some bones on the beach like I always do when the river flow goes down, there's always something but the problem is that I never know what I found. The last time they helped me here to identify a whale humerus, thanks a lot! This time I found several bones, but I had to discard many because they were badly broken or did not look interesting. All of these are about the same (12-18cm) The one that looks better is that kind of vertebra, I searched with Google and it says it could be from a bison, but sounds weird a bison in a beach, and btw, the place where I found them is Uruguay, South America - where there never were bison I think. And sorry for the bad pics, but it was the last hours of sun, I can take others if required. Thanks!!
-
Hello everyone! I found this possible fossil? in a Coast in Uruguay (country in South America) - I found it after a drop in the level of the water, he was between a lot of rocks and look so different than the rocks (and I'm 98% sure that isn't a rock lol) what could it be? The size is 60x40 aprox Thank you all! And sorry for the bad english btw.
-
Paper describes a large theropod from Uruguay represented by isolated teeth which resemble Ceratosaurus. I dont have access to this paper but it will be interesting to see the multvariate analysis results and be able to compare these teeth to those found in Portugal. What is interesting in the highlights is that they propose that the spinosaurid Ostafrikasaurus crassiserratus from Tanzania should be referred as a ceratosaurid theropod. Paywalled: https://www.sciencedirect.com/science/article/abs/pii/S0895981120303242
- 1 reply
-
- 2
-
- ceratosaurus
- late jurassic
-
(and 2 more)
Tagged with:
-
South American Smilodon Skull implies 1000 pound cat! https://www.nytimes.com/2020/03/14/science/saber-toothed-tiger.html
-
- 3
-
- half ton cat
- smilodon
-
(and 1 more)
Tagged with:
-
Isolated teeth from the Tacuarembó Formation of Uruguay have revealed the first Megalosaurid from South America. The teeth have strong resemblance to Torvosaurus and as such the Megalosaur from Uruguay and Tanzania are suggested to be from Torvosaurus. It is paywalled but the abstract describes the features of the teeth. https://www.sciencedirect.com/science/article/abs/pii/S089598111930505X
- 1 reply
-
- 8
-
- megalosaur
- theropod teeth
-
(and 2 more)
Tagged with:
-
Calisto, V. and Piñeiro, G., 2019. A large cockroach from the mesosaur-bearing Konservat-Lagerstätte (Mangrullo Formation), Late Paleozoic of Uruguay. PeerJ, 7, p.e6289. https://www.researchgate.net/publication/330484562_A_large_cockroach_from_the_mesosaur-bearing_Konservat-Lagerstatte_Mangrullo_Formation_Late_Paleozoic_of_Uruguay https://peerj.com/articles/6289/?utm_source=TrendMD&utm_campaign=PeerJ_TrendMD_0&utm_medium=TrendMD Yorus, Paul H.
-
- 1
-
- barona arcuata
- carboniferous
-
(and 3 more)
Tagged with:
-
Hello, I was just traveling for a while and I was in the Rocha Department of Uruguay an area north east of Montevideo on the coast. I was walking along the severe hightide line of the shore just in front of a formation of a large sand dune area. I came across this what I think to be bone but potentially an antler. Uruguay was home to many Miocene Mammals and other fauna. Any ideas what this may be from from? Hard and heavy stone sounding when tapped. Marrow fossilized within perhaps. Any help is much appreciated! Patrick
-
Hi! I found this on the beach of a freshwater lake in Uruguay that has in the past been part of the pacific ocean. I think it is an inner ear bone of some marine mammal, but I don't know from how long ago or from what kind of animal. I'm sorry that there's no scale, but it's an inch and a half long, one inch wide and on average about 1cm thick and the holes are about 2mm diameter). Can anyone help?? I can give more information about the location if it would be useful. Thanks!!
- 9 replies
-
- fossil
- inner ear bome
-
(and 3 more)
Tagged with: