North Horn Formation
http://dbpedia.org/resource/North_Horn_Formation an entity of type: WikicatCretaceousPaleontologicalSitesOfNorthAmerica
Souvrství North Horn je geologickou formací na území centrálního a východního Utahu v USA. Stáří sedimentů činí asi 71 až 64 milionů let, jedná se tedy o usazeniny z nejpozdnější křídy (geologický stupeň maastricht) až nejstaršího paleocénu. Mocnost sedimentů činí místy až 1100 metrů, nejběžnější horninou je pískovec, jílovitá břidlice a slepenec.
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The North Horn Formation is a widespread non-marine sedimentary unit with extensive outcrops exposed in central and eastern Utah. The formation locally exceeds 3,600 feet (1,100 m) in thickness and is characterized by fluvial, lacustrine, and floodplain dominated systems, representing a terrestrial, high energy, depositional environment. The sediments date from Late Cretaceous (Maastrichtian) to early Paleocene in age and include the K-Pg extinction event boundary; however, this boundary is extremely difficult to locate and there is no strong stratigraphic evidence available that indicates a specific marker bed such as an iridium rich clay layer. Thus far, the only visible evidence is represented in the form of faunal turnover from dinosaur to mammal-dominated fossil assemblages. Taxa from
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North Horn Formation
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Souvrství North Horn
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North Horn Formation
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December 2018
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Danian
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what is a macrofossil?
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what is a TTSS? This is an extremely technical term, please help define what it means in simpler terms
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39.0 -111.0
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Souvrství North Horn je geologickou formací na území centrálního a východního Utahu v USA. Stáří sedimentů činí asi 71 až 64 milionů let, jedná se tedy o usazeniny z nejpozdnější křídy (geologický stupeň maastricht) až nejstaršího paleocénu. Mocnost sedimentů činí místy až 1100 metrů, nejběžnější horninou je pískovec, jílovitá břidlice a slepenec.
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The North Horn Formation is a widespread non-marine sedimentary unit with extensive outcrops exposed in central and eastern Utah. The formation locally exceeds 3,600 feet (1,100 m) in thickness and is characterized by fluvial, lacustrine, and floodplain dominated systems, representing a terrestrial, high energy, depositional environment. The sediments date from Late Cretaceous (Maastrichtian) to early Paleocene in age and include the K-Pg extinction event boundary; however, this boundary is extremely difficult to locate and there is no strong stratigraphic evidence available that indicates a specific marker bed such as an iridium rich clay layer. Thus far, the only visible evidence is represented in the form of faunal turnover from dinosaur to mammal-dominated fossil assemblages. Taxa from the Cretaceous part of the formation include squamates, testudines, choristoderes, crocodyliforms, sharks, bony fishes, amphibians, mammals, dinosaurs, eggshell fragments, trace fossils, mollusks, plant , such as wood fragments, and palynomorphs.
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Price River & Tuscher Formations
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