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• Chazy_Formation abstract "The Chazy Reef Formation is a mid-Ordovician limestone deposit in northeastern North America.It consists of some of the oldest reef systems built by a community of organisms rather than the deposit of a limited range of similar organisms, such as Stromatolite mounds deposited by ancient cyanobacteria. The reef structure was formed largely by cryptostome and trepostome bryozoa, some of the oldest known bryozoans, but corals made an early appearance, and stromatoporoids.The formation is named for the small town of Chazy, New York, where the reef was noted by James Hall in Palaeontology of New York (vol. I, 1847) and the fossils first studied by the Canadian paleontologist Elkanah Billings (1858, 1859). The reef extends from Tennessee to Quebec and Newfoundland, but its most easily studied outcropping is at Goodsell Ridge, Isle La Motte, the northernmost island in Lake Champlain; there, gentle uplift has tilted the sediments: the bedding planes now dip slightly to the north, revealing sequences of horizons in exposed rock. The black limestone of Isle La Motte takes a polish, revealing the white "bird's-eye" markings of embedded fossil shells, notably the spirals formed by sliced gastropod shells. Rock of the Chazy Formation was quarried from the nineteenth century at the Fisk Quarry, Isle La Motte, the oldest quarry in Vermont.The system formed in warm tropical waters of the Iapetus Ocean, in low latitudes of the Southern Hemisphere. The site was in shallow waters of a continental shelf: the continental craton of Laurentia lay to the west, beyond the lagoon system that formed behind the protective reef. The time was some 480-450 Ma (million years ago), at a period when global paleoclimate was so warm that the planet was all but ice-free. Atmospheric carbon dioxide was fourteen to sixteen times more plentiful than it is today.The Chazy Reef Formation, which built up vertically from a muddy base catching fine dark silt as it grew, began as mounds deposited by bryozoans that stabilized a muddy bottom, then built up into the water column to such an extent that the connected mounds modified their surrounding environment (Mehrtens). As the reef aged, it began to offer an increasing variety of ecological niches, which fostered the first rich local biodiversity that has characterized all reef systems ever since. One dominant reef-building organism took the place of another, in a slowly evolving faunal succession.The Chazy Reef Formation has given its name to the contemporaneous mid-Ordovician faunal stage, the Chazyan.".
• Chazy_Formation thumbnail Chazy_Reef_Isle_La_Motte.jpg?width=300.
• Chazy_Formation wikiPageExternalLink chazytxt.htm.
• Chazy_Formation wikiPageExternalLink chazy.html.
• Chazy_Formation wikiPageExternalLink Chazy_Reef.pdf.
• Chazy_Formation wikiPageID "8640793".
• Chazy_Formation wikiPageLength "4899".
• Chazy_Formation wikiPageOutDegree "42".
• Chazy_Formation wikiPageRevisionID "679544161".
• Chazy_Formation wikiPageWikiLink Bed_(geology).
• Chazy_Formation wikiPageWikiLink Bedding_(geology).
• Chazy_Formation wikiPageWikiLink Biodiversity.
• Chazy_Formation wikiPageWikiLink Bryozoa.
• Chazy_Formation wikiPageWikiLink Carbon_dioxide.
• Chazy_Formation wikiPageWikiLink Category:Geology_of_Newfoundland_and_Labrador.
• Chazy_Formation wikiPageWikiLink Category:Lake_Champlain.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_United_States.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_geologic_formations.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_geology_of_New_York.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_geology_of_Pennsylvania.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_geology_of_Tennessee.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_geology_of_Vermont.
• Chazy_Formation wikiPageWikiLink Category:Ordovician_stratigraphic_units_of_Canada.
• Chazy_Formation wikiPageWikiLink Category:Stratigraphy_of_Quebec.
• Chazy_Formation wikiPageWikiLink Chazy,_New_York.
• Chazy_Formation wikiPageWikiLink Continental_shelf.
• Chazy_Formation wikiPageWikiLink Coral.
• Chazy_Formation wikiPageWikiLink Craton.
• Chazy_Formation wikiPageWikiLink Elkanah_Billings.
• Chazy_Formation wikiPageWikiLink Faunal_stage.
• Chazy_Formation wikiPageWikiLink Faunal_succession.
• Chazy_Formation wikiPageWikiLink File:Chazy_Reef_Isle_La_Motte.jpg.
• Chazy_Formation wikiPageWikiLink Gastropod.
• Chazy_Formation wikiPageWikiLink Gastropoda.
• Chazy_Formation wikiPageWikiLink Iapetus_Ocean.
• Chazy_Formation wikiPageWikiLink Isle_La_Motte.
• Chazy_Formation wikiPageWikiLink Lagoon.
• Chazy_Formation wikiPageWikiLink Lake_Champlain.
• Chazy_Formation wikiPageWikiLink Laurentia.
• Chazy_Formation wikiPageWikiLink Megaannum.
• Chazy_Formation wikiPageWikiLink Newfoundland_(island).
• Chazy_Formation wikiPageWikiLink North_America.
• Chazy_Formation wikiPageWikiLink Ordovician.
• Chazy_Formation wikiPageWikiLink Paleoclimate.
• Chazy_Formation wikiPageWikiLink Paleoclimatology.
• Chazy_Formation wikiPageWikiLink Principle_of_faunal_succession.
• Chazy_Formation wikiPageWikiLink Quarry.
• Chazy_Formation wikiPageWikiLink Quebec.
• Chazy_Formation wikiPageWikiLink Reef.
• Chazy_Formation wikiPageWikiLink Southern_Hemisphere.
• Chazy_Formation wikiPageWikiLink Stage_(stratigraphy).
• Chazy_Formation wikiPageWikiLink Stromatolite.
• Chazy_Formation wikiPageWikiLink Stromatoporoid.
• Chazy_Formation wikiPageWikiLink Stromatoporoidea.
• Chazy_Formation wikiPageWikiLink Tennessee.
• Chazy_Formation wikiPageWikiLink Vermont.
• Chazy_Formation wikiPageWikiLink Year.
• Chazy_Formation wikiPageWikiLink File:Annual_report_(1902)_(18242143640).jpg.
• Chazy_Formation wikiPageWikiLinkText "Chazy Formation".
• Chazy_Formation wikiPageWikiLinkText "Chazy Fossil Reef".
• Chazy_Formation wikiPageWikiLinkText "Chazy Reef".
• Chazy_Formation wikiPageWikiLinkText "Chazy_Formation".
• Chazy_Formation hasPhotoCollection Chazy_Formation.
• Chazy_Formation wikiPageUsesTemplate Template:Coord_missing.
• Chazy_Formation wikiPageUsesTemplate Template:Reflist.
• Chazy_Formation subject Category:Geology_of_Newfoundland_and_Labrador.
• Chazy_Formation subject Category:Lake_Champlain.
• Chazy_Formation subject Category:Ordovician_United_States.
• Chazy_Formation subject Category:Ordovician_geologic_formations.
• Chazy_Formation subject Category:Ordovician_geology_of_New_York.
• Chazy_Formation subject Category:Ordovician_geology_of_Pennsylvania.
• Chazy_Formation subject Category:Ordovician_geology_of_Tennessee.
• Chazy_Formation subject Category:Ordovician_geology_of_Vermont.
• Chazy_Formation subject Category:Ordovician_stratigraphic_units_of_Canada.
• Chazy_Formation subject Category:Stratigraphy_of_Quebec.
• Chazy_Formation hypernym Deposit.
• Chazy_Formation type Article.
• Chazy_Formation type Library.
• Chazy_Formation type Article.
• Chazy_Formation type Formation.
• Chazy_Formation type Landform.
• Chazy_Formation comment "The Chazy Reef Formation is a mid-Ordovician limestone deposit in northeastern North America.It consists of some of the oldest reef systems built by a community of organisms rather than the deposit of a limited range of similar organisms, such as Stromatolite mounds deposited by ancient cyanobacteria.".
• Chazy_Formation label "Chazy Formation".
• Chazy_Formation sameAs m.027c4dv.
• Chazy_Formation sameAs Q5088691.
• Chazy_Formation sameAs Q5088691.
• Chazy_Formation wasDerivedFrom Chazy_Formation?oldid=679544161.
• Chazy_Formation depiction Chazy_Reef_Isle_La_Motte.jpg.
• Chazy_Formation isPrimaryTopicOf Chazy_Formation.