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Greater Levantine Formation: Difference between revisions
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[[File:Greater Levantine Formation.png|thumb|Approximate range of the Greater Levantine Formation]] | [[File:Greater Levantine Formation.png|thumb|Approximate range of the Greater Levantine Formation]] | ||
The '''Greater Levantine Formation''' is a distinctive sequence of {{wpl|Late Jurassic}} and {{wpl|Early Cretaceous}} sedimentary rock found in central [[Levantia]] which has been the most fertile source of dinosaur fossils in [[Levantia]]. It is composed of mudstone, sandstone, siltstone, and limestone and is light gray, greenish gray, or red and occasionally under a cover of gneiss and granite. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period. The Greater Levantine Formation covers roughly 839,245 sqare miles or 2,173,635 square kilometers although only a tiny fraction is exposed and accessible to geologists and paleontologists. The Greater Levantine Formation is present in [[Anglei | The '''Greater Levantine Formation''' is a distinctive sequence of {{wpl|Late Jurassic}} and {{wpl|Early Cretaceous}} sedimentary rock found in central [[Levantia]] which has been the most fertile source of dinosaur fossils in [[Levantia]]. It is composed of mudstone, sandstone, siltstone, and limestone and is light gray, greenish gray, or red and occasionally under a cover of gneiss and granite. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period. The Greater Levantine Formation covers roughly 839,245 sqare miles or 2,173,635 square kilometers although only a tiny fraction is exposed and accessible to geologists and paleontologists. The Greater Levantine Formation is present in [[Anglei]], [[Kronenia]], [[Orclenia]], [[Urcea]], [[Wealdland]] and [[Yonderre]]. | ||
According to radiometric dating, the Greater Levantine Formation dates from 150.2 ± 2 million years old (Ma) at its base, to 138.8 ± 1 million years old at the top, which places it in the {{wpl|Late Jurassic}} and {{wpl|Early Cretaceous}} stages of world history. The Levantine Basin, which stretched from central [[Urcea]] in the south to [[Vandarcôte]], [[Yonderre]], in the north, was formed during the ideogneiss orogeny, a precursor event to later orogenic episodes that created the Ionian Mountains. The deposits from their east-facing drainage basins, carried by streams and rivers from the present-day Ionian Plateau (along the borders of present-day Urcea and Anglei) and deposited in swampy lowlands, lakes, river channels and floodplains, became the Greater Levantine Formation. | According to radiometric dating, the Greater Levantine Formation dates from 150.2 ± 2 million years old (Ma) at its base, to 138.8 ± 1 million years old at the top, which places it in the {{wpl|Late Jurassic}} and {{wpl|Early Cretaceous}} stages of world history. The Levantine Basin, which stretched from central [[Urcea]] in the south to [[Vandarcôte]], [[Yonderre]], in the north, was formed during the ideogneiss orogeny, a precursor event to later orogenic episodes that created the Ionian Mountains. The deposits from their east-facing drainage basins, carried by streams and rivers from the present-day Ionian Plateau (along the borders of present-day Urcea and Anglei) and deposited in swampy lowlands, lakes, river channels and floodplains, became the Greater Levantine Formation. | ||
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* Dungville Basin: First excavated in 1924 with the purpose of finding sauropods from the Greater Levantine Formation for public display. Several specimens of ''[[Makrylaimis]]'' as well as partial specimens of ''[[Joanusaurus]]'' have been excavated in the Dungville Basin. | * Dungville Basin: First excavated in 1924 with the purpose of finding sauropods from the Greater Levantine Formation for public display. Several specimens of ''[[Makrylaimis]]'' as well as partial specimens of ''[[Joanusaurus]]'' have been excavated in the Dungville Basin. | ||
* [[Great Lime Quarry]]: First excavated by geologists from the [[University of Stretton]] in the late 1920s. [[Jour & Leon]] led an expedition in 1931 which discovered that, during the Jurassic, the quarry was a mudhole where several enormous sauropods got stuck and apparently caused a feeding frenzy that lured and trapped many carnivorous dinosaurs. Most specimens of the ''[[Joanusaurus]]'' subspecies ''J. angleii'' are from this site, as well as | * [[Great Lime Quarry]]: First excavated by geologists from the [[University of Stretton]] in the late 1920s. [[Jour & Leon]] led an expedition in 1931 which discovered that, during the Jurassic, the quarry was a mudhole where several enormous sauropods got stuck and apparently caused a feeding frenzy that lured and trapped many carnivorous dinosaurs. Most specimens of the ''[[Joanusaurus]]'' subspecies ''J. angleii'' are from this site, as well as ''[[Ligmaceratops]]'' and ''[[Strettonsaurus]]''. | ||
====Urcea==== | ====Urcea==== | ||
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==See also== | ==See also== | ||
* [[History of paleontology]] | * [[History of paleontology]] | ||
* [[ | * [[Paleontology in Yonderre]] | ||
[[Category:Paleontology]] | [[Category:Paleontology]] | ||