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Tilia Johnsoni
''Tilia johnsoni'' is an extinct species of flowering plant in the family Malvaceae that, as a member of the genus ''Tilia'', is related to modern lindens (called "limes" in Britain and "basswoods" in the US). The species is known from fossil leaves found in the early Eocene deposits of northern Washington state, United States and a similar aged formation in British Columbia, Canada. History and classification ''Tilia johnsoni'' leaf fossils have been identified from two locations in Western North America, the 49 million year old Klondike Mountain Formation near Republic, Washington and at the Quilchena locality near Merritt, British Columbia. Fossil pollen identified as from the genus ''Tilia'' has been identified from a greater range of Okanagan Highland fossil sites, having been found in the Allenby Formation near Princeton, British Columbia, at the Falkland fossil site near Falkland, the McAbee Fossil Beds near Kamloops, the Hat Creek Amber and Driftwood Canyon Provincial ...
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Jack A
Jack may refer to: Places * Jack, Alabama, US, an unincorporated community * Jack, Missouri, US, an unincorporated community * Jack County, Texas, a county in Texas, USA People and fictional characters * Jack (given name), a male given name, including a list of people and fictional characters with the name * Jack (surname), including a list of people with the surname * Jack (Tekken), multiple fictional characters in the fighting game series ''Tekken'' * Jack the Ripper, an unidentified British serial killer active in 1888 * Wolfman Jack (1938–1995), a stage name of American disk jockey Robert Weston Smith * New Jack, a stage name of Jerome Young (1963-2021), an American professional wrestler * Spring-heeled Jack, a creature in Victorian-era English folklore Animals and plants Fish *Carangidae generally, including: **Almaco jack **Amberjack **Bar jack **Black jack (fish) **Crevalle jack **Giant trevally or ronin jack ** Jack mackerel ** Leather jack **Yellow jack *Coho salm ...
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Princeton, British Columbia
Princeton (originally Vermilion Forks) is a town in the Similkameen region of southern British Columbia, Canada."The rich history of Princeton or how Vermilion Forks made it on the map...", Princeton 2008 Visitors Guide, p. 4. It lies just east of the Cascade Mountains, which continue south into Washington, Oregon and California. The Tulameen and Similkameen Rivers converge here."Everything you've ever wanted to know about Princeton...", Princeton 2008 Visitors Guide, p. 6. At the 2016 census, the population was 2,828. Princeton centres on seven blocks of businesses along Bridge Street and five blocks on Vermilion Avenue; there are also businesses along British Columbia Highway 3."Princeton... 'Beautiful B.C. at its Best'", Princeton 2008 Visitors Guide, p. 9. Historically, the area's main industry has been mining—copper, gold, coal, and some platinum—The town's biggest employers are Copper Mountain Mine and a sawmill owned by Weyerhaeuser, along with a few smaller timber ...
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Type Specimen
In biology, a type is a particular wiktionary:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set (mathematics), set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the ...
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Lutetian
The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene Subepoch. Stratigraphic definition The Lutetian was named after Lutetia, the Latin name for the city of Paris. The Lutetian Stage was introduced in scientific literature by French geologist Albert de Lapparent in 1883 and revised by A. Blondeau in 1981. The base of the Lutetian Stage is at the first appearance of the nanofossil ''Blackites inflatus'', according to an official reference profile (GSSP) established in 2011. Of two candidates located in Spain, the Gorrondatxe section was chosen.See thwebsite of Eustoquio Molinafor these candidates. The top of the Lutetian (the base of the Bartonian) is at the first appearance of calcareous nanoplankton species ''Reticulofenestra reticulata''. The Lutetian overlaps with the Geisel ...
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Ypresian
In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the lower Eocene. Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. Stratigraphic definition The Ypresian Stage was introduced in scientific literature by Belgium, Belgian geologist André Hubert Dumont in 1850. The Ypresian is named after the Flanders, Flemish city of Ypres in Belgium (spelled ''Ieper'' in Dutch). The definitions of the original stage were totally different from the modern ones. The Ypresi ...
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Argon–argon Dating
Argon–argon (or 40Ar/39Ar) dating is a radiometric dating method invented to supersede potassiumargon (K/Ar) dating in accuracy. The older method required splitting samples into two for separate potassium and argon measurements, while the newer method requires only one rock fragment or mineral grain and uses a single measurement of argon isotopes. 40Ar/39Ar dating relies on neutron irradiation from a nuclear reactor to convert a stable form of potassium (39K) into the radioactive 39Ar. As long as a standard of known age is co-irradiated with unknown samples, it is possible to use a single measurement of argon isotopes to calculate the 40K/40Ar* ratio, and thus to calculate the age of the unknown sample. 40Ar* refers to the radiogenic 40Ar, i.e. the 40Ar produced from radioactive decay of 40K. 40Ar* does not include atmospheric argon adsorbed to the surface or inherited through diffusion and its calculated value is derived from measuring the 36Ar (which is assumed to be of atmosphe ...
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Early Eocene
In the geologic timescale the Ypresian is the oldest age or lowest stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by the Eocene Lutetian Age. The Ypresian is consistent with the lower Eocene. Events The Ypresian Age begins during the throes of the Paleocene–Eocene Thermal Maximum (PETM). The Fur Formation in Denmark, the Messel shales in Germany, the Oise amber of France and Cambay amber of India are of this age. The Eocene Okanagan Highlands are an uplands subtropical to temperate series of lakes from the Ypresian. Stratigraphic definition The Ypresian Stage was introduced in scientific literature by Belgian geologist André Hubert Dumont in 1850. The Ypresian is named after the Flemish city of Ypres in Belgium (spelled ''Ieper'' in Dutch). The definitions of the original stage were totally different from the modern ones. The Ypresian shares its name with the Belgian Ieper Group (French: ...
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Horsefly, British Columbia
Horsefly is an unincorporated community on the northwest shore of the Horsefly River, in the Cariboo region of central British Columbia. The location, via BC Highway 97, Likely Rd, and Horsefly Rd, is about northeast of Williams Lake, and by road south of Quesnel Lake. Mining Peter Dunlevey's party of prospectors is credited with the first discovery of gold in the Cariboo Gold Rush near the site of the present village. However, evidence indicates H.O. Bowe's party arrived weeks earlier to the Horsefly River in the summer of 1859. That year, at least four separate groups found gold. During the following years, small placer operations existed. In 1884, Thaddeus Harper obtained sizable mining leases, but his operations from 1886 to 1888 were unsuccessful. In 1891, R.T. Ward, who had bought or leased the Harper claims, found paying ground. Called the Horsefly Gold Mining Co., activities continued until 1902. From 1891, the Miocene Gravel Mining Co undertook underground hard-rock mi ...
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Smithers, British Columbia
Smithers is a town in northwestern British Columbia, approximately halfway between Prince George and Prince Rupert. With a population of 5,351 in 2016, Smithers provides service coverage for most of the Bulkley Valley. History Region First Nations settlements existed thousands of years prior to European presence. Railway The planned Grand Trunk Pacific Railway (GTP) required two major divisional points in BC, where additional staff and facilities would be located. After Prince George, various central points on the Prince Rupert leg were considered in the vicinity of Aldermere. A prime choice was Hubert, east of Telkwa, initially called Bulkley by the developers, who had amassed the surrounding land. These speculators promoted a future new city, and later a trade centre of the Bulkley Valley, both fallacious claims, since Smithers had already been selected as the divisional point. The Interior News of Aldermere had earlier adopted a policy of refusing advertising from such unsc ...
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Driftwood Canyon Provincial Park
Driftwood Canyon Provincial Park is a provincial park in British Columbia, Canada. Driftwood Canyon Provincial Park covers 23 ha of the Bulkley River Valley, on the east side of Driftwood Creek, a tributary of the Bulkley River, 10 km northeast of the town of Smithers. The park is accessible from Driftwood Road from Provincial Highway 16. It was created in 1967 by the donation of the land by the late Gordon Harvey (1913–1976) to protect fossil beds on the east side of Driftwood Creek. The beds were discovered around the beginning of the 20th century. The park lands are part of the asserted traditional territory of the Wet'suwet'en First Nation.Ludvigsen, R. 2001. The fossils at Driftwood Canyon provincial park: A management plan for BC Parks. Denman Institute for Research on Trilobites, 339 Denman Road, Denman Island, BC V0R 1T0 http://www.bvcentre.ca/files/External/FossilMgmtPlan-Ludvigsen2001.pdf (accessed July 14, 2011) Access A car park just off the road access, lea ...
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Hat Creek (British Columbia)
Hat Creek is a tributary of the Bonaparte River in British Columbia, Canada, joining that stream at Carquile, British Columbia, Carquile, which is also known as Lower Hat Creek, British Columbia, Lower Hat Creek and is the site of the Hat Creek Ranch heritage museum and visitor centre. The Hat Creek basin includes a broad upper plateau area encircled by the gentle but high summits of the Clear Range and, to its east, the Cornwall Hills; this area is known as Upper Hat Creek, British Columbia, Upper Hat Creek. Adjacent to Upper Hat Creek is the gateway to Marble Canyon (Canada), Marble Canyon and a rancherie of the Pavilion First Nation, who are both a St'at'imc and Secwepemc people. During the Fraser Canyon Gold Rush, Fraser Canyon and Cariboo Gold Rushes an important trail northwards from the lower Fraser Canyon led from Foster Bar on the Fraser via Laluwissen Creek into Upper Hat Creek, then via the creek to the Bonaparte River. The economy of the basin is ranching-based and i ...
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