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I've got this piece of Oligocene amber from Montana which has a very odd hole running straight through it. I at first though that this could be from where the resin seeped out around a twig of its tree and the twig eventually rotted away, leaving this hole. Do you think that could be the cause? The hole was filled with dirt before I cleaned it.
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Blakeburn Amber (Allenby Fm., 52.5-48 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
“Blakeburn Amber” Coalmont, British Columbia Allenby Fm. (Princeton Group) 52.5-48 Ma Weight: 0.8g Dimensions: 16x16x13mm Lighting: Longwave UV The final entry in a series of ten, detailing various rare ambers from European, Asian, and North American localities. This is a fine example of an in-situ piece of amber. The matrix is high-volatile type B bituminous coal, which contains small portions of methane; it has a bright vitreous luster due to it containing over 90% vitrinite (a “maceral”, or component of coal, derived from woody plant tissue). Geology of the Allenby Fm.: Within the Tulameen Basin lies the Tulameen Coalfield, which covers approximately 6.2 square miles (10 sq. km.), and is located about 12.5 miles (20 km.) northwest of Princeton, B.C.; within the Allenby Fm. is three members/layers: an upper member of sandstone and conglomerate 600 m thick, a lower sandstone member 100-150 m thick, and a middle member 130 m thick; the middle member is predominantly mudstone and shale and contains two coal seams, the upper seam containing amber. The main seam lies 25-40 m above the lower seam, is 15-21 m thick, and is of much higher quality than the lower seam: it is from this layer that much of the mining was done. Botanical Source: Nearby, the Allenby Fm. is composed of three Members, the middle being the Vermillion Bluffs Shale: it is known for its rich deposits of plant fossils. Approximately 9.3 miles (15 km.) southeast of the Tulameen Coalfield, is the famous Thomas Ranch locality: here, the majority of the plant fossils consist of cupressaceous remains, “Metasequoia occidentalis” being the most common; at Tiger Mountain (Washington State, USA), Eocene-aged amber occurs alongside Metasequoia and Taxodium leaf imprints, which are plentiful. It is quite possible that Blakeburn and Tiger Mountain ambers were derived from a Cupressaceae source tree. History of Mine: In 1899, analyses on the coal of the Tulameen Basin were submitted to the Geological Survey of Canada, and mining began in 1904 in the Blakeburn Creek area; the owners of the mines, Coalmont Collieries, Ltd., created 5 mines over the next 30 years, with mines No. 1 and No. 2 opening in 1913. No. 3 and No. 4 began production in the 1920s, but were shut down in the 1930s due to fires and flooding. It was in the No. 4 mine that a tragic incident occurred on August 13, 1930: an explosion killed 45 men, and was believed to have been caused by a buildup of methane (released from the high-volatile type B coal, mentioned earlier) from closed-off mining areas. The official explanation by the mining company claimed methane was not a major contributing factor; interesting, considering that the fire bosses of the mine asserted to the workers beforehand that the mines were gas-free. From 1900 to 1940, 2.2 million tons of coal were produced, with the No. 5 Mine closing in 1940. Sporadic exploration has been done in the area since 1960, and in 2002, Compliance Coal Mining was planning to open a mine in the Tulameen Basin. Sources: “The Eocene Thomas Ranch flora, Allenby Formation, Princeton, British Columbia, Canada”; Article in “Botany”; Dillhoff, et. al. 2013 “Overview of the Coalbed Methane Potential of Tertiary Coal Basins in the Interior of British Columbia”; BCGS Geological Fieldwork 2002; Barry Ryan “Coal Petrology of the Tulameen Coalfield, South Central British Columbia”; Western Washington University; V. Eileen Williams 1978 “Stratigraphy of Eocene Rocks in a Part of King County, Washington”; U.S. Geological Survey; James D. Vine 1962© Kaegen Lau
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Blakeburn Amber (Allenby Fm., 52.5-48 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
“Blakeburn Amber” Coalmont, British Columbia Allenby Fm. (Princeton Group) 52.5-48 Ma Weight: 0.8g Dimensions: 16x16x13mm Lighting: 140lm LED The final entry in a series of ten, detailing various rare ambers from European, Asian, and North American localities. This is a fine example of an in-situ piece of amber. The matrix is high-volatile type B bituminous coal, which contains small portions of methane; it has a bright vitreous luster due to it containing over 90% vitrinite (a “maceral”, or component of coal, derived from woody plant tissue). Geology of the Allenby Fm.: Within the Tulameen Basin lies the Tulameen Coalfield, which covers approximately 6.2 square miles (10 sq. km.), and is located about 12.5 miles (20 km.) northwest of Princeton, B.C.; within the Allenby Fm. is three members/layers: an upper member of sandstone and conglomerate 600 m thick, a lower sandstone member 100-150 m thick, and a middle member 130 m thick; the middle member is predominantly mudstone and shale and contains two coal seams, the upper seam containing amber. The main seam lies 25-40 m above the lower seam, is 15-21 m thick, and is of much higher quality than the lower seam: it is from this layer that much of the mining was done. Botanical Source: Nearby, the Allenby Fm. is composed of three Members, the middle being the Vermillion Bluffs Shale: it is known for its rich deposits of plant fossils. Approximately 9.3 miles (15 km.) southeast of the Tulameen Coalfield, is the famous Thomas Ranch locality: here, the majority of the plant fossils consist of cupressaceous remains, “Metasequoia occidentalis” being the most common; at Tiger Mountain (Washington State, USA), Eocene-aged amber occurs alongside Metasequoia and Taxodium leaf imprints, which are plentiful. It is quite possible that Blakeburn and Tiger Mountain ambers were derived from a Cupressaceae source tree. History of Mine: In 1899, analyses on the coal of the Tulameen Basin were submitted to the Geological Survey of Canada, and mining began in 1904 in the Blakeburn Creek area; the owners of the mines, Coalmont Collieries, Ltd., created 5 mines over the next 30 years, with mines No. 1 and No. 2 opening in 1913. No. 3 and No. 4 began production in the 1920s, but were shut down in the 1930s due to fires and flooding. It was in the No. 4 mine that a tragic incident occurred on August 13, 1930: an explosion killed 45 men, and was believed to have been caused by a buildup of methane (released from the high-volatile type B coal, mentioned earlier) from closed-off mining areas. The official explanation by the mining company claimed methane was not a major contributing factor; interesting, considering that the fire bosses of the mine asserted to the workers beforehand that the mines were gas-free. From 1900 to 1940, 2.2 million tons of coal were produced, with the No. 5 Mine closing in 1940. Sporadic exploration has been done in the area since 1960, and in 2002, Compliance Coal Mining was planning to open a mine in the Tulameen Basin. Sources: “The Eocene Thomas Ranch flora, Allenby Formation, Princeton, British Columbia, Canada”; Article in “Botany”; Dillhoff, et. al. 2013 “Overview of the Coalbed Methane Potential of Tertiary Coal Basins in the Interior of British Columbia”; BCGS Geological Fieldwork 2002; Barry Ryan “Coal Petrology of the Tulameen Coalfield, South Central British Columbia”; Western Washington University; V. Eileen Williams 1978 “Stratigraphy of Eocene Rocks in a Part of King County, Washington”; U.S. Geological Survey; James D. Vine 1962© Kaegen Lau
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Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
9.2g amber from Tiger Mountain, King County, WA. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations.© Kaegen Lau
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Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
3.0g of amber from the 9.2g lot depicted in the associated entry. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations. It is found in association with Pinus sp. and Metasequoia occidentalis remains, which were the most probable sources of the amber; association with Metasequoia sp. is even more prevalent among the amber from the Blakeburn Mine (i.e., amber from the Allenby Fm. near Coalmont), as Metasequoia imprints are especially abundant at that site.© Kaegen Lau
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Canadian Amber (Allenby Fm., 52.5-48 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
3.0g of amber, from the same lot in the two associated entries. This mid to late-Ypresian material comes from an old site near the abandoned mining town of Blakeburn, which site and its gangue piles are now technically owned by a coal mining company (although the existing legal claim of the individual who collected this amber is being overruled by the company). The amber is found primarily in association with Metasequoia sp. remains/imprints, however Pinus and Pseudolarix (among others) remains are also found in a lesser quantity at the site.© Kaegen Lau
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- allenby formation
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Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
1.2 gram amber from Tiger Mountain, King County, WA. Smaller inclusions consist mostly of slightly darker, congealed resin positioned along natural flow lines; this feature is by far most commonly seen among the Indonesian ambers. The few large, dark masses are botanical debris. Image taken under approx. 10x magnification with a Belomo Triplet loupe. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary between the upper Tukwila/lower Renton Formations.© Kaegen Lau
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Amber (Tukwila Fm./Renton Fm. [Boundary], Middle to Late Eocene)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Two exceptionally fluorescent pieces of amber from Tiger Mountain, King County, WA. These were illuminated with a 140 lumen LED penlight, not a long wave UV light; this is a surprising feature for amber of this locality, as blue amber is only well-documented to come from the Dominican Republic, Indonesia, and Chiapas. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations.© Kaegen Lau
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Canadian Amber (Allenby Fm., 52.5-48 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Closeup of material from previous entry.© Kaegen Lau
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Canadian Amber (Allenby Fm., 52.5-48 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Rough amber from an old site near Coalmont, British Columbia. The original site is now closed to collecting, since a mining company somehow got a court injunction and has "jumped" the owner's legal, active long-standing claim. The claim owner has informed me that he is not able to collect larger specimens (>3g fraction), as he had been able to in the past.© Kaegen Lau
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References: Verschoor, K. van R. 1974. Paleobotany of the Tertiary (early Middle Eocene) McAbee Beds, British Columbia. M.Sc. thesis, University of Calgary, Calgary, AB, 128 p. Link: Richard M. Dillhoff, Estella B. Leopold, and Steven R. Manchester (2005): The McAbee flora of British Columbia and its relation to the Early–Middle Eocene Okanagan Highlands flora of the Pacific Northwest. Can. J. Earth Sci. 42: 151–166. Greenwood, D.R.; Pigg, K.B.; Basinger, J.F.; DeVore, M.L. (2016). "A review of paleobotanical studies of the Early Eocene Okanagan (Okanogan) Highlands floras of British Columbia, Canada and Washington, USA". Canadian Journal of Earth Sciences. 53 (6): 548–564. doi:10.1139/cjes-2015-0177. Link: Alex Lowe ,Christopher K. West, Markus Sudermann, and David Robert Greenwood (2017): MILLENNIAL-SCALE PLANT COMMUNITY AND CLIMATE DYNAMICS AT THE ONSET OF THE EARLY EOCENE CLIMATIC OPTIMUM, MCABEE FOSSIL BEDS, BRITISH COLUMBIA, CANADA. Conference: Geological Society of America Annual Meeting At: Seattle, Washington, USA
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I've been meaning to make this post for a while, finally getting around to it. Back in July I made a trip to John Day for my first ever fossil hunt. Before I get to our finds, of course when in the area you have to spend some time enjoying the scenery of the gorgeous painted hills also on the list was the visitor center, unfortunately I didn't get many pictures there but here are a few highlights: Continued...
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found some pieces from an early mid-jurassic for late early-jurassic strata in Jiulongshan to the west of Beijing City, China. Pretty common. some mentioned the term storguardia to me, though I could not find any information on-line. I found that in all conifers, only metasequoia has this type of foliage (opporsite, lanceolated leaves). is it true?
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Hello Fossil Forum! I recently purchased a metasequoia cone that is from the Huff, North Dakota area and the place I purchased it from has a tag claiming that it is 85 million years old. I believed it at first, but after some research I am unsure of its age. I have a Mesozoic collection going, so I’d like to know if it is late Cretaceous in age. Thank you!
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First time posting here, thought i'd share a plate of Metasequoia that I found at the Macabee site near Cache Creek BC a number of years ago. More to follow if there's interest.
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From the album: MY FOSSIL Collection - Dpaul7
METASEQUOIA DAWN REDWOOD Muddy Creek Formation, Beaver Head County, Montana Oligocene Age (5 million years ago) The Dawn Redwood (Metasequoia) is a genus that dates all the way back to the age of dinosaur it is related to the California Redwoods and was thought to be extinct until living specimens were discovered in central China in 1944. First called a “fossil tree” because it was believed extinct, the fast-growing tree is now a favorite ornamental tree. It was (and is) a deciduous conifer. Today’s Metasequoia has a full pyramidal shape, grows to 120′ high. Dimensions: 2.6 Inches Long, 2.2 Inches Wide. Dawn redwoods are fast-growing trees. They will grow too large for small gardens, but can be good in a wide range of larger gardens and parks. Although they live in wet sites in their native habitat they will also tolerate dry soils. Kingdom: Plantae Division: Pinophyta Class: Pinopsida Order: Pinales Family: Cupressaceae Subfamily: Sequoioideae Genus: Metasequoia-
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From the album: MY FOSSIL Collection - Dpaul7
METASEQUOIA DAWN REDWOOD Muddy Creek Formation, Beaver Head County, Montana Oligocene Age (5 million years ago) The Dawn Redwood (Metasequoia) is a genus that dates all the way back to the age of dinosaur it is related to the California Redwoods and was thought to be extinct until living specimens were discovered in central China in 1944. First called a “fossil tree” because it was believed extinct, the fast-growing tree is now a favorite ornamental tree. It was (and is) a deciduous conifer. Today’s Metasequoia has a full pyramidal shape, grows to 120′ high. Dimensions: 2.6 Inches Long, 2.2 Inches Wide. Dawn redwoods are fast-growing trees. They will grow too large for small gardens, but can be good in a wide range of larger gardens and parks. Although they live in wet sites in their native habitat they will also tolerate dry soils. Kingdom: Plantae Division: Pinophyta Class: Pinopsida Order: Pinales Family: Cupressaceae Subfamily: Sequoioideae Genus: Metasequoia-
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Eocene Fossils and Paleoclimate Data From Canadian Subarctic Kimberlite Maar
Oxytropidoceras posted a topic in Fossil News
Below is an open access paper about fossils from a Canadian subarctic kimberlite maar. Wolfe, A.P., Reyes, A.V., Royer, D.L., Greenwood, D.R., Doria, G., Gagen, M.H., Siver, P.A., and Westgate, J.A., 2017, Middle Eocene CO2 and climate reconstructed from the sediment fill of a subarctic kimberlite maar: Geology, v. 45, p. 619-622, http://geology.geoscienceworld.org.libezp.lib.lsu.edu/content/45/7/619 http://geology.geoscienceworld.org.libezp.lib.lsu.edu/content/45/7 Related papers: Doria, G., Royer, D.L., Wolfe, A.P., Fox, A., Westgate, J.A., and Beerling, D.J., 2011, Declining atmospheric CO2 during the late Middle Eocene climate transition: American Journal of Science, v. 311, p. 63–75, doi:10.2475/01.2011.03. https://www.eas.ualberta.ca/wolfe/eprints/Doria et al AJS 2011.pdf Wolfe, A.P., Edlund, M.B., Sweet, A.R., and Creighton, S.D., 2006, A first account of organelle preservation in Eocene nonmarine diatoms: observations and paleobiological implications: Palaios, v. 21, p. 298–304, doi:10.2110/palo.2005.p05-14e https://www.eas.ualberta.ca/wolfe/eprints/Wolfe_palaios2006.pdf Yours, Paul H.