The Triassic is the first and shortest period of the Mesozoic Era, spanning about 251.902 to 201.4 million years ago. It began in the aftermath of the Permian-Triassic extinction and ended with the Triassic-Jurassic extinction event; archosaurs, including the early dinosaur lineages, were the chief terrestrial vertebrates while Pangaea began to rift apart late in the period. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Start (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. End (Million Years Ago)Standard boundary age from the ICS International Chronostratigraphic Chart; not independently re-dated by this atlas. Key EventReptiles, especially archosaurs, were the chief terrestrial vertebrates of the Triassic, against a mostly hot, dry global climate with deserts spanning much of Pangaea's interior. 1 Defining Event Triassic
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Source Anchor Church (Wikipedia)
Source Baïgorry Valley (Wikipedia)
Source Besano Formation (Wikipedia)
Source Blue Lias (Wikipedia)
Source Chew Valley (Wikipedia)
Source Chinle Formation (Wikipedia)
Source Wikipedia: Devils Tower - Wikipedia
Source Dolomites (Wikipedia)
Source Grès à Voltzia (Wikipedia)
Source Grose Valley (Wikipedia)
Source Guanling Formation (Wikipedia)
Source Hunter Valley (Wikipedia)
Source Ischigualasto Provincial Park (Wikipedia)
Source Jamison Valley (Wikipedia)
Source Lias Group (Wikipedia)
Source Madygen Formation (Wikipedia)
Source Mercia Mudstone Group (Wikipedia)
Source Moenkopi Formation (Wikipedia)
Source Outer Hebrides (Wikipedia)
Source Painted Desert (Arizona) (Wikipedia)
Source Permian-Triassic Extinction Event (Wikipedia)
Source Triassic-Jurassic Extinction Event (Wikipedia)
Source Ural Mountains (Wikipedia)
Source Verdon Gorge (Wikipedia)
Source Wingate Sandstone (Wikipedia)
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1. Triassic (Wikipedia)
Wikimedia FoundationIntroduction
The Triassic Period is the first and shortest geologic period of the Mesozoic Era
Fauna and climate
Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time
Climate
The global climate during the Triassic was mostly hot and dry, with deserts spanning much of Pangaea's interior
- Classification
- Timespan (start)
- Timespan (end)
Lead paragraph
The start and the end of the Triassic Period featured major extinction events.
View the Source Permian-Triassic Extinction Event (Wikipedia)
Wikimedia FoundationAssociated With: Permian-Triassic Extinction EventView the Source Triassic-Jurassic Extinction Event (Wikipedia)
Wikimedia FoundationAssociated With: Triassic-Jurassic Extinction EventView the Source Chinle Formation (Wikipedia)
Associated With: Chinle Formation, Lead paragraph
The Chinle Formation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the U.S. states of Nevada, Utah, northern Arizona, western New Mexico, and western Colorado.
Associated With: Chinle Formation, Lead, age Triassic
The Chinle Formation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the U.S. states of Nevada, Utah, northern Arizona, western New Mexico, and western Colorado.
View the SourceBlue Lias (Wikipedia)
Associated With: Blue Lias, Lead paragraph
The Blue Lias consists of a sequence of limestone and shale layers, laid down in latest Triassic and early Jurassic times, between 195 and 200 million years ago.
Associated With: Blue Lias, Lead, age Triassic
The Blue Lias consists of a sequence of limestone and shale layers, laid down in latest Triassic and early Jurassic times, between 195 and 200 million years ago.
View the SourceMoenkopi Formation (Wikipedia)
Associated With: Moenkopi Formation, Lead paragraph
Part of the Colorado Plateau and Basin and Range, this red sandstone was laid down in the Lower Triassic and possibly part of the Middle Triassic, around 240 million years ago.
Associated With: Moenkopi Formation, Lead, age Triassic
Part of the Colorado Plateau and Basin and Range, this red sandstone was laid down in the Lower Triassic and possibly part of the Middle Triassic, around 240 million years ago.
View the SourceGrès à Voltzia (Wikipedia)
Associated With: Grès à Voltzia, Lead paragraph
It preserves fossils dating back to the Triassic period, more specifically the Anisian stage of the Middle Triassic epoch.
Associated With: Grès à Voltzia, Lead, age Triassic
It preserves fossils dating back to the Triassic period, more specifically the Anisian stage of the Middle Triassic epoch.
View the SourceAnchor Church (Wikipedia)
Associated With: Anchor Church, Lead, age TriassicQuote, Associated With: Anchor Church, Lead, age Triassic
Anchor Church is a series of caves in a Keuper Sandstone (Triassic conglomerate) outcrop, close to the village of Ingleby, Derbyshire, England.
View the Source Baïgorry Valley (Wikipedia)
Associated With: Baïgorry Valley, Article text, age TriassicQuote, Associated With: Baïgorry Valley, Article text, age Triassic
To the northwest, the watershed dividing the Nive and Bidassoa river basins follows the crest of a Permian-Triassic cuesta in the Baztan region, formed of pink sandstone.
View the Source Besano Formation (Wikipedia)
Associated With: Besano Formation, Lead, age TriassicQuote, Associated With: Besano Formation, Lead, age Triassic
This formation, a thin but fossiliferous succession of dolomite and black shale, is famous for its preservation of Middle Triassic (Anisian-Ladinian) marine life including fish and aquatic reptiles.
View the Source Chew Valley (Wikipedia)
Associated With: Chew Valley, Article text, age TriassicQuote, Associated With: Chew Valley, Article text, age Triassic
Clifton Down Limestone, which includes calcite and dolomitic mudstones of the Carboniferous period, is found in the adjoining central band and dolomitic conglomerate of the Triassic period.
View the Source Wikipedia: Devils Tower - Wikipedia
Associated With: Devils Tower, Article text, age TriassicQuote, Associated With: Devils Tower, Article text, age Triassic
The oldest rocks visible in Devils Tower National Monument were laid down in a shallow sea during the Triassic.
View the Source Grose Valley (Wikipedia)
Associated With: Grose Valley, Article text, age TriassicQuote, Associated With: Grose Valley, Article text, age Triassic
The geology of the area consists of Triassic sandstones and underlying Permian sedimentary rocks.
View the Source Guanling Formation (Wikipedia)
Associated With: Guanling Formation, Lead, age TriassicQuote, Associated With: Guanling Formation, Lead, age Triassic
The Guanling Formation is a Middle Triassic (Anisian or Pelsonian in the regional chronostratigraphy) geologic formation in southwestern China.
View the Source Hunter Valley (Wikipedia)
Associated With: Hunter Valley, Article text, age TriassicQuote, Associated With: Hunter Valley, Article text, age Triassic
The further north and west, towards the Brokenback Range and the Upper Hunter, the more Triassic sandstone that can be found leading eventually to the carboniferous rocks that form the northern boundary of the Hunter with the New England Fold Belt and the foothills of the Barrington Tops.
View the Source Ischigualasto Provincial Park (Wikipedia)
Associated With: Ischigualasto Provincial Park, Article text, age TriassicQuote, Associated With: Ischigualasto Provincial Park, Article text, age Triassic
The Ischigualasto Formation contains Late Triassic (Carnian) deposits (231.4 -225.9 million years before the present), with some of the oldest known dinosaur remains, which are the world's foremost with regards to quality, number and importance.
View the Source Lias Group (Wikipedia)
Associated With: Lias Group, Lead, age TriassicQuote, Associated With: Lias Group, Lead, age Triassic
20 million years between 200 to 180 million years ago) and thus also includes a part of the Triassic.
View the Source Madygen Formation (Wikipedia)
Associated With: Madygen Formation, Lead, age TriassicQuote, Associated With: Madygen Formation, Lead, age Triassic
The Madygen Formation (Russian: Madygen Svita) is a Middle-Late Triassic (Ladinian-Carnian) geologic formation and lagerstätte in the Batken and Osh Regions of western Kyrgyzstan, with minor outcrops in neighboring Tajikistan and Uzbekistan.
View the Source Mercia Mudstone Group (Wikipedia)
Associated With: Mercia Mudstone Group, Lead, age TriassicQuote, Associated With: Mercia Mudstone Group, Lead, age Triassic
The Mercia Mudstone Group is a middle to late Triassic lithostratigraphic group (a sequence of rock strata) which is widespread in Britain, especially in the English Midlands-the name is derived from the ancient kingdom of Mercia which corresponds to that area.
View the Source Outer Hebrides (Wikipedia)
Associated With: Outer Hebrides, Article text, age TriassicQuote, Associated With: Outer Hebrides, Article text, age Triassic
There are relatively small outcrops of Triassic sandstone at Broad Bay near Stornoway.
View the Source Painted Desert (Arizona) (Wikipedia)
Associated With: Painted Desert, Article text, age TriassicQuote, Associated With: Painted Desert, Article text, age Triassic
The desert is composed of stratified layers of siltstone, mudstone, and shale of the Triassic Chinle Formation, which erode easily.
View the Source Ural Mountains (Wikipedia)
Associated With: Ural Mountains, Article text, age TriassicQuote, Associated With: Ural Mountains, Article text, age Triassic
The collision lasted nearly 90 million years in the late Carboniferous, early Triassic.
View the Source Verdon Gorge (Wikipedia)
Associated With: Verdon Gorge, Article text, age TriassicQuote, Associated With: Verdon Gorge, Article text, age Triassic
During the Triassic period, the Provence subsided and was covered by the sea, leaving thick layers of various limestone deposits.
View the Source Wingate Sandstone (Wikipedia)
Associated With: Wingate Sandstone, Article text, age TriassicQuote, Associated With: Wingate Sandstone, Article text, age Triassic
Wingate layers are typically pale orange to red in color, the remnants of wind-born sand dunes deposited approximately 200 million years ago in the Late Triassic.
View the Source Dolomites (Wikipedia)
Associated With: Dolomites, Infobox: ageQuote, Associated With: Dolomites, Infobox: age
Mostly Triassic
View the Source Jamison Valley (Wikipedia)
Associated With: Jamison Valley, Infobox: ageQuote, Associated With: Jamison Valley, Infobox: age
Triassic
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