Late CretaceousSubdivision of the Cretaceous according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyChronostratigraphic nameUpper CretaceousGeochronological nameLate CretaceousName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitEpochStratigraphic unitSeriesTime span formalityFormalLower boundary definitionFAD of the Planktonic ForaminiferRotalipora globotruncanoidesLower boundary GSSPMont Risoux, Hautes-Alpes, France44°23′33″N5°30′43″E / 44.3925°N 5.5119°E / 44.3925; 5.5119Lower GSSP ratified2002Upper boundary definitionIridium enriched layer associated with a major meteorite impact and subsequent K-Pg extinction eventUpper boundary GSSPEl Kef Section, El Kef, Tunisia36°09′13″N8°38′55″E / 36.1537°N 8.6486°E / 36.1537; 8.6486Upper GSSP ratified1991The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the CretaceousPeriod is divided in the geologic time scale.
AlbertaProvince of CanadaProvince in CanadaAlberta is a province in Canada. It is a part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, the Northwest Territories to its north, and the U.S. state of Montana to its south. Alberta and Saskatchewan are the only two landlocked provinces.
EdmontonCapital of Alberta, CanadaCity and provincial capital in Alberta, CanadaEdmonton ( ) is the capital city of the Canadian province of Alberta. It is situated on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Alberta's central region. Located about 290 kilometres (180 mi) north of Calgary, the city anchors the northern end of what Statistics Canada defines as the "Calgary–Edmonton Corridor".
Western Canada Sedimentary BasinThe Western Canada Sedimentary Basin (WCSB) underlies 1.4 million square kilometres (540,000 sq mi) of Western Canada including southwestern Manitoba, southern Saskatchewan, Alberta, northeastern British Columbia and the southwest corner of the Northwest Territories. This vast sedimentary basin consists of a massive wedge of sedimentary rock extending from the Rocky Mountains in the west to the Canadian Shield in the east.
GeologyScientific study of Earth's physical compositionNot to be confused with Geography.The Grand Canyon, Arizona, in March 2013Geology is a branch of natural science concerned with the Earth and other astronomical bodies, the rocks of which they are composed, and the processes by which they change over time. The name comes from Ancient Greek γῆ (gê) 'earth' and λoγία (-logía) 'study of, discourse'.
Earth scienceEarth science or geoscience includes all fields of natural science related to planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four spheres: the biosphere, hydrosphere/cryosphere, atmosphere, and geosphere (or lithosphere). Earth science can be generalized into planetary science, a more recent branch of science.
PaleoceneAges of the Paleocene Epoch, according to the ICS as ofJanuary 2020.
CampanianSubdivision of the Cretaceous according to the ICS, as of 2024.Vertical axis scale: Millions of years agoEtymologyName formalityFormalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionBase of Chron C33rLower boundary GSSPBottaccione, Gubbio, Italy43°21′46″N12°34′58″E / 43.3627°N 12.5828°E / 43.3627; 12.5828Lower GSSP ratifiedOctober 2022Upper boundary definitionMean of 12 biostratigraphic criteriaUpper boundary GSSPGrande Carrière quarry, Landes, France43°40′46″N1°06′48″W / 43.6795°N 1.1133°W / 43.6795; -1.1133Upper GSSP ratifiedFebruary 2001The Campanian is the fifth of six ages of the Late Cretaceousepoch on the geologic timescale of the International Commission on Stratigraphy (ICS).
StratigraphyStratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age).
Stage (stratigraphy)In chronostratigraphy, a stage is a succession of rock strata laid down in a single age on the geologic timescale, which usually represents millions of years of deposition. A given stage of rock and the corresponding age of time will by convention have the same name, and the same boundaries. Rock series are divided into stages, just as geological epochs are divided into ages.
North Saskatchewan RiverThe North Saskatchewan River is a glacier-fed river that flows from the Canadian Rockies continental divide east to central Saskatchewan, where it joins with the South Saskatchewan River to make up the Saskatchewan River. Its water flows into the Hudson Bay via Lake Winnipeg and the Nelson River. The Saskatchewan River system is the largest shared between the Canadian provinces of Alberta and Saskatchewan.
Joseph TyrrellJoseph Burr Tyrrell,FRSC (November 1, 1858 – August 26, 1957) was a Canadian geologist, cartographer, mining consultant and historian. He discovered dinosaur (Albertosaurus sarcophagus) bones in Alberta's Badlands and coal around Drumheller in 1884. Canada's Royal Tyrrell Museum of Palaeontology in Alberta was named in his honour. Tyrrell was born in Weston, Ontario, the fifth child of William and Elizabeth Tyrrell.*As an Amazon Associate I earn from qualifying purchases.