SamiCG Posted January 24, 2021 Share Posted January 24, 2021 Found in Blount County Alabama near the Blackburn’s Fork of the Locust Fork River Link to comment Share on other sites More sharing options...
Thomas.Dodson Posted January 24, 2021 Share Posted January 24, 2021 It is a petrified wood piece. You're correct that the replacement is with silica. Most fossil wood is preserved with some silica polymorph (minerals with the same chemical composition but different crystalline structure). 3 Link to comment Share on other sites More sharing options...
SamiCG Posted January 24, 2021 Author Share Posted January 24, 2021 31 minutes ago, Thomas.Dodson said: It is a petrified wood piece. You're correct that the replacement is with silica. Most fossil wood is preserved with some silica polymorph (minerals with the same chemical composition but different crystalline structure). Thanks Thomas. ☺️ Link to comment Share on other sites More sharing options...
Oxytropidoceras Posted January 24, 2021 Share Posted January 24, 2021 (edited) It is a piece of petrified wood that is likely silicified. More precise identification involves specialized expertise and technique as the below paers indicate. Silicified wood is common in parts of Alabama and Mississippi. I do not have references for Alabama, but some references for Mississippi are: Blackwell, W.H., 1982. Fossil" dogwood" from the Pleistocene of central Mississippi. Botanical Gazette, 143(3), pp.395-400. Blackwell, W.H., 1983. Fossil wood from" Sand Hill," western central Mississippi. Bulletin of the Torrey Botanical Club, 110(1), pp.63-69. Blackwell, W.H., 1984. Fossil Ponderosa-like pine wood from the Upper Cretaceous of North-east Mississippi. Annals of botany, 53(1), pp.133-136. Blackwell, W.H., 1989, Fossil palm stem from Bayou Pierre, Copiah/ Claiborne counties, Mississippi. Mississippi, Geology 9(3), pp 9-13. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_9_3.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-9-number-3-38870/ Blackwell, W.H., Brandenburg, D.M. and Dukes Jr, G.H., 1980. The structural and phytogeographic affinities of some silicified wood from the mid-Tertiary of west-central Mississippi. in Geobotany II pp. 203-220, Plenum Press Blackwell, W.H. and Dukes, G.H., 1981. Fossil wood from Thompson Creek. Yazoo County, Mississippi, Geology 2(2), pp.1-6. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_2_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-2-number-2-34049/ Blackwell, W.H., Powell, M.J. and Dukes, G.H., 1983. Fossil wood from Bayou Pierre and White Oak Creek, southwest-central Mississippi. Mississippi Geology. 4(2), pp. 1 – 6. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_4_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-4-number-2-35085/ Blackwell, W.H. and Marak, J.H., 1989. The Scientific investigation of fossil wood. Mississippi Geology, 10(1), pp.1-9. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_10_1.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-10-number-1-38872/ Cahoon, E.J., 1972. Paraphyllanthoxylon alabamense—a new species of fossil dicotyledonous wood. American Journal of Botany, 59(1), pp.5-11. Dockery III, D.T., 1987. Petrified palm" wood" from Thompson Creek, Yazoo County, Mississippi. Mississippi geology (USA). Mississippi Geology, 8(2), pp.10-11. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_8_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-8-number-2-38865/ Dukes Jr, G.H., 1961. Some Tertiary Fossil Woods of Louisiana and Mississippi. Unpublished PhD Dissertation, Louisiana State University and Agricultural and Mechanical College, Baton rouge, Louisisana. 74 pp. https://digitalcommons.lsu.edu/gradschool_disstheses/668/ https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1667&context=gradschool_disstheses Lumsden, D.N., 2018. Wood Silicification: A Moganite Mystery. Southeastern Geology, 53(4), pp. 121-129. Singleton, S.W., 2017. Occurrence of Fossil Woods in Texas, Primarily the Cretaceous and Tertiary. Gulf Coast Association of Geological Societies Transactions. 67(1), pp. 305-330 https://hgms.org/petrified-wood-publication-by-scott-singleton/ General Dockery III, D.T., and Thompson, D.E., 2016, The Geology of Mississippi The University Press of Mississippi. Jackson, Mississppi Mike Viney, Petrified Wood: The Silicification of Wood by Permineralization http://petrifiedwoodmuseum.org/PDF/Permineralization.pdf Butts, S.H., 2014. Silicification. The Paleontological Society Papers, 20, pp.15-34. http://peabody.yale.edu/sites/default/files/documents/invertebrate-paleontology/ButtsPSP20FinalOPEN.pdf Yours, Paul H. Edited January 24, 2021 by Oxytropidoceras fixe errors in citations and URLs 2 Link to comment Share on other sites More sharing options...
SamiCG Posted January 24, 2021 Author Share Posted January 24, 2021 2 hours ago, Oxytropidoceras said: It is a piece of petrified wood that is likely silicified. More precise identification involves specialized expertise and technique as the below paers indicate. Silicified wood is common in parts of Alabama and Mississippi. I do not have references for Alabama, but some references for Mississippi are: Blackwell, W.H., 1982. Fossil" dogwood" from the Pleistocene of central Mississippi. Botanical Gazette, 143(3), pp.395-400. Blackwell, W.H., 1983. Fossil wood from" Sand Hill," western central Mississippi. Bulletin of the Torrey Botanical Club, 110(1), pp.63-69. Blackwell, W.H., 1984. Fossil Ponderosa-like pine wood from the Upper Cretaceous of North-east Mississippi. Annals of botany, 53(1), pp.133-136. Blackwell, W.H., 1989, Fossil palm stem from Bayou Pierre, Copiah/ Claiborne counties, Mississippi. Mississippi, Geology 9(3), pp 9-13. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_9_3.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-9-number-3-38870/ Blackwell, W.H., Brandenburg, D.M. and Dukes Jr, G.H., 1980. The structural and phytogeographic affinities of some silicified wood from the mid-Tertiary of west-central Mississippi. in Geobotany II pp. 203-220, Plenum Press Blackwell, W.H. and Dukes, G.H., 1981. Fossil wood from Thompson Creek. Yazoo County, Mississippi, Geology 2(2), pp.1-6. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_2_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-2-number-2-34049/ Blackwell, W.H., Powell, M.J. and Dukes, G.H., 1983. Fossil wood from Bayou Pierre and White Oak Creek, southwest-central Mississippi. Mississippi Geology. 4(2), pp. 1 – 6. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_4_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-4-number-2-35085/ Blackwell, W.H. and Marak, J.H., 1989. The Scientific investigation of fossil wood. Mississippi Geology, 10(1), pp.1-9. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_10_1.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-10-number-1-38872/ Cahoon, E.J., 1972. Paraphyllanthoxylon alabamense—a new species of fossil dicotyledonous wood. American Journal of Botany, 59(1), pp.5-11. Dockery III, D.T., 1987. Petrified palm" wood" from Thompson Creek, Yazoo County, Mississippi. Mississippi geology (USA). Mississippi Geology, 8(2), pp.10-11. https://www.mdeq.ms.gov/wp-content/uploads/2013/10/Vol_8_2.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/mississippi-geology/mississippi-geology-volume-8-number-2-38865/ Dukes Jr, G.H., 1961. Some Tertiary Fossil Woods of Louisiana and Mississippi. Unpublished PhD Dissertation, Louisiana State University and Agricultural and Mechanical College, Baton rouge, Louisisana. 74 pp. https://digitalcommons.lsu.edu/gradschool_disstheses/668/ https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=1667&context=gradschool_disstheses Lumsden, D.N., 2018. Wood Silicification: A Moganite Mystery. Southeastern Geology, 53(4), pp. 121-129. Singleton, S.W., 2017. Occurrence of Fossil Woods in Texas, Primarily the Cretaceous and Tertiary. Gulf Coast Association of Geological Societies Transactions. 67(1), pp. 305-330 https://hgms.org/petrified-wood-publication-by-scott-singleton/ General Dockery III, D.T., and Thompson, D.E., 2016, The Geology of Mississippi The University Press of Mississippi. Jackson, Mississppi Mike Viney, Petrified Wood: The Silicification of Wood by Permineralization http://petrifiedwoodmuseum.org/PDF/Permineralization.pdf Butts, S.H., 2014. Silicification. The Paleontological Society Papers, 20, pp.15-34. http://peabody.yale.edu/sites/default/files/documents/invertebrate-paleontology/ButtsPSP20FinalOPEN.pdf Yours, Paul H. Thank you Paul for all of these references. This is very kind. Link to comment Share on other sites More sharing options...
grandpa Posted January 26, 2021 Share Posted January 26, 2021 BTW, the dark micro-crystal vein down the length of the specimen is called druzy quartz. 1 1 Link to comment Share on other sites More sharing options...
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