#geologicalperiods — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #geologicalperiods, aggregated by home.social.
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Statherian (Geological periods 🌍)
The Statherian Period is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Mya to 1600 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of cu...
https://en.wikipedia.org/wiki/Statherian
#Statherian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Cretaceous (Geological periods 🌍)
The Cretaceous is a geologic period that lasted from about 143.1 to 66 Ma. It is the third and final period of the Mesozoic Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin creta, 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, ...
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Statherian (Geological periods 🌍)
The Statherian Period is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Mya to 1600 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of cu...
https://en.wikipedia.org/wiki/Statherian
#Statherian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Cryogenian (Geological periods 🌍)
The Cryogenian is a geologic period that lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran. The Cryogenian was a time of drastic climate changes. After the long environmental stability/stagnation during the Boring Billi...
https://en.wikipedia.org/wiki/Cryogenian
#Cryogenian #IceAges #Glaciology #Neoproterozoic #GeologicalPeriods #GeologyControversies
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Statherian (Geological periods 🌍)
The Statherian Period is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Mya to 1600 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of cu...
https://en.wikipedia.org/wiki/Statherian
#Statherian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Carboniferous (Geological periods 🌍)
The Carboniferous is a geologic period and system of the Paleozoic era that spans 60 million years, from the end of the Devonian Period 358.86 Ma to the beginning of the Permian Period, 298.9 Ma. It is the fifth period of the Phanerozoic eon. In North America, the Carboniferous is often treated as two separate geological periods, the earlier Mississippian and the later Pennsyl...
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Quaternary (Geological periods 🌍)
The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy, as well as the current and most recent of the twelve periods of the Phanerozoic eon. It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary ...
https://en.wikipedia.org/wiki/Quaternary
#Quaternary #GeologicalPeriods #PhysicalGeography #PhysicalOceanography
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Quaternary (Geological periods 🌍)
The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy, as well as the current and most recent of the twelve periods of the Phanerozoic eon. It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary ...
https://en.wikipedia.org/wiki/Quaternary
#Quaternary #GeologicalPeriods #PhysicalGeography #PhysicalOceanography
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Quaternary (Geological periods 🌍)
The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy, as well as the current and most recent of the twelve periods of the Phanerozoic eon. It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary ...
https://en.wikipedia.org/wiki/Quaternary
#Quaternary #GeologicalPeriods #PhysicalGeography #PhysicalOceanography
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Ordovician (Geological periods 🌍)
The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era, and the second of twelve periods of the Phanerozoic Eon. The Ordovician spans 41.6 million years from the end of the Cambrian Period 486.85 Ma to the start of the Silurian Period 443.1 Ma. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charle...
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Tonian (Geological periods 🌍)
The Tonian is the first geologic period of the Neoproterozoic Era. It lasted from 1000 to 720 Mya. Instead of being based on stratigraphy, these dates are defined by the ICS based on radiometric chronometry. The Tonian is preceded by the Stenian Period of the Mesoproterozoic Era and followed by the Cryogenian. Rifting leading to the breakup of supercontin...
https://en.wikipedia.org/wiki/Tonian
#Tonian #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Ectasian (Geological periods 🌍)
The Ectasian Period is the second geologic period in the Mesoproterozoic Era and lasted from 1400 Mya to 1200 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. Geologically the name refers to the continued expansion of platform covers during this period. In the early Ectasian period, a day was 17 hours and 32 min...
https://en.wikipedia.org/wiki/Ectasian
#Ectasian #Mesoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Ordovician (Geological periods 🌍)
The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era, and the second of twelve periods of the Phanerozoic Eon. The Ordovician spans 44 million years from the end of the Cambrian Period 487 Ma to the start of the Silurian Period 443 Ma. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapwo...
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Silurian (Geological periods 🌍)
The Silurian is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at 443.1 Ma to the beginning of the Devonian Period, 419.62 Ma. The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon. As with other geologic periods, the rock beds that define the period's start and end are well ...
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Siderian (Geological periods 🌍)
The Siderian Period is the first geologic period in the Paleoproterozoic Era and lasted from 2500 Ma to 2300 Ma. Instead of being based on stratigraphy, these dates are defined chronometrically. The deposition of banded iron formations peaked early in this period. These iron-rich formations were formed as anaerobic cyanobacteria produced waste oxy...
https://en.wikipedia.org/wiki/Siderian
#Siderian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Jurassic (Geological periods 🌍)
The Jurassic is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 million years ago to the beginning of the Cretaceous Period, approximately 143.1 Mya. The Jurassic constitutes the second and middle period of the Mesozoic Era as well as the eighth period of the Phanerozoic Eon and is named after the Jura Mountains, where limestone strata from ...
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Permian (Geological periods 🌍)
The Permian is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period 298.9 million years ago, to the beginning of the Triassic Period 251.902 Mya. It is the sixth and last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Mu...
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Carboniferous (Geological periods 🌍)
The Carboniferous is a geologic period and system of the Paleozoic era that spans 60 million years from the end of the Devonian Period 358.86 Ma to the beginning of the Permian Period, 298.9 Ma. It is the fifth and penultimate period of the Paleozoic era and the fifth period of the Phanerozoic eon. In North America, the Carboniferous is often treated as two separate geological...
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Calymmian (Geological periods 🌍)
The Calymmian Period is the first geologic period in the Mesoproterozoic Era and lasted from 1600 Mya to 1400 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The period is characterised by expansion of existing platform covers, or by new platforms on recently cratonized basements. The supercontinent Columbia...
https://en.wikipedia.org/wiki/Calymmian
#Calymmian #Mesoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Neogene (Geological periods 🌍)
The Neogene is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period 23.03 million years ago to the beginning of the present Quaternary Period 2.58 million years ago. It is the second period of the Cenozoic and the eleventh period of the Phanerozoic. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists...
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Devonian (Geological periods 🌍)
The Devonian is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at 419.2 million years ago, to the beginning of the succeeding Carboniferous period at 358.9 Ma. It is named after Devon, South West England, where rocks from this period were first studied. The first signific...
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Orosirian (Geological periods 🌍)
The Orosirian Period is the third geologic period in the Paleoproterozoic Era and lasted from 2050 Mya to 1800 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically. The later half of the period was an episode of intensive orogeny on virtually all continents. Two of the largest known impact events on Earth occurre...
https://en.wikipedia.org/wiki/Orosirian
#Orosirian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Boring Billion (Geological periods 🌍)
The Boring Billion, otherwise known as the Mid Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago during the middle Proterozoic eon spanning from the Statherian to the Tonian periods, characterized by more or less tectonic stability, climatic stasis and slo...
https://en.wikipedia.org/wiki/Boring_Billion
#BoringBillion #Proterozoic #Astrobiology #1995InScience #PlateTectonics #GeologicalPeriods
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Boring Billion (Geological periods 🌍)
The Boring Billion, otherwise known as the Mid Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago during the middle Proterozoic eon spanning from the Statherian to the Tonian periods, characterized by more or less tectonic stability, climatic stasis and slo...
https://en.wikipedia.org/wiki/Boring_Billion
#BoringBillion #Proterozoic #Astrobiology #1995InScience #PlateTectonics #GeologicalPeriods
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Boring Billion (Geological periods 🌍)
The Boring Billion, otherwise known as the Mid Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago during the middle Proterozoic eon spanning from the Statherian to the Tonian periods, characterized by more or less tectonic stability, climatic stasis and slo...
https://en.wikipedia.org/wiki/Boring_Billion
#BoringBillion #Proterozoic #Astrobiology #1995InScience #PlateTectonics #GeologicalPeriods
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Boring Billion (Geological periods 🌍)
The Boring Billion, otherwise known as the Mid Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago during the middle Proterozoic eon spanning from the Statherian to the Tonian periods, characterized by more or less tectonic stability, climatic stasis and slo...
https://en.wikipedia.org/wiki/Boring_Billion
#BoringBillion #Proterozoic #Astrobiology #1995InScience #PlateTectonics #GeologicalPeriods
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Boring Billion (Geological periods 🌍)
The Boring Billion, otherwise known as the Mid Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago during the middle Proterozoic eon spanning from the Statherian to the Tonian periods, characterized by more or less tectonic stability, climatic stasis and slo...
https://en.wikipedia.org/wiki/Boring_Billion
#BoringBillion #Proterozoic #Astrobiology #1995InScience #PlateTectonics #GeologicalPeriods
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Silurian (Geological periods 🌍)
The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period, 419.2 Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a...
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Cryogenian (Geological periods 🌍)
The Cryogenian is a geologic period that lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran. The Cryogenian was a time of drastic climate changes. After the long environmental stability/stagnation during the Boring Billi...
https://en.wikipedia.org/wiki/Cryogenian
#Cryogenian #IceAges #Glaciology #Neoproterozoic #GeologicalPeriods #GeologyControversies
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Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the Proterozoic Eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian P...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the Proterozoic Eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian P...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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System (stratigraphy) (Geological periods 🌍)
A system in stratigraphy is a sequence of strata that were laid down together within the same corresponding geological period. The associated period is a chronological time unit, a part of the geological time scale, while the system is a unit of chronostratigraphy. Systems are unrelated to lithostratigraphy, whic...
https://en.wikipedia.org/wiki/System_(stratigraphy)
#System #Erathems #Stratigraphy #Geochronology #GeologicalUnits #GeologicalPeriods
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Paleogene (Geological periods 🌍)
The Paleogene Period is a geologic period and system that spans 43 million years from the end of the Cretaceous Period 66 million years ago to the beginning of the Neogene Period 23.03 Mya. It is the first part of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the time now covered by the Paleogene Period and subsequent Neogene Period; ...
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Jurassic (Geological periods 🌍)
The Jurassic is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 million years ago to the beginning of the Cretaceous Period, approximately 145 Mya. The Jurassic constitutes the middle period of the Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was ma...
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System (stratigraphy) (Geological periods 🌍)
A system in stratigraphy is a sequence of strata that were laid down together within the same corresponding geological period. The associated period is a chronological time unit, a part of the geological time scale, while the system is a unit of chronostratigraphy. Systems are unrelated to lithostratigraphy, whic...
https://en.wikipedia.org/wiki/System_(stratigraphy)
#System #Erathems #Stratigraphy #Geochronology #GeologicalUnits #GeologicalPeriods
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Quaternary (Geological periods 🌍)
The Quaternary is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy. It follows the Neogene Period and spans from 2.58 million years ago to the present. As of 2023, the Quaternary Period is divided into two epochs: the Pleistocene and the Holocene ; a t...
https://en.wikipedia.org/wiki/Quaternary
#Quaternary #GeologicalPeriods #PhysicalGeography #PhysicalOceanography
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Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic era that spans 96 million years from the end of the Cryogenian period at 635 Mya to the beginning of the Cambrian period at 538.8 Mya. It is the last period of the Proterozoic eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian p...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Rhyacian (Geological periods 🌍)
The Rhyacian Period is the second geologic period in the Paleoproterozoic Era and lasted from 2300 Mya to 2050 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically.The Bushveld Igneous Complex and some other similar intrusions formed during this period.The Huronian global glaciation began at the start of the Rhyacia...
https://en.wikipedia.org/wiki/Rhyacian
#Rhyacian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Statherian (Geological periods 🌍)
The Statherian Period is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Mya to 1600 Mya. Instead of being based on stratigraphy, these dates are defined chronometrically.The period was characterized on most continents by either new platforms or final cratonization of fold belts. Oxygen levels were 10% to 20% of cur...
https://en.wikipedia.org/wiki/Statherian
#Statherian #Paleoproterozoic #GeologicalPeriods #ProterozoicGeochronology