Nunatak hypothesis (Phytogeography 🌱)
In biogeography, particularly phytogeography, the nunatak hypothesis about the origin of a biota in formerly glaciated areas is the idea that some or many species have survived the inhospitable period on icefree land such as nunataks. Its antithesis is the tabula rasa hypothesis, which posits that all s...
https://en.wikipedia.org/wiki/Nunatak_hypothesis
#NunatakHypothesis #IceAges #Biogeography #Phytogeography #BiologicalHypotheses #PrehistoryOfTheArctic
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
This week's #NewBooks at the library: I bought a discounted copy of Thomas Piketty's brick Capital and Ideology (that's what reading about degrowth gets you into...), bought an original (not print-on-demand) copy of the Imbries' classical #ScienceHistory book on the discovery of the #IceAges, and bought a discounted copy of The #Asteroid Hunter: A Scientist's Journey to the Dawn of our Solar System on NASA's OSIRIS-REx mission.
#Economics #IceAges #Palaeoclimatology #HistoryOfScience #HistSci #Astronomy #Books #Scicomm #Bookstodon @bookstodon
Wolstonian Stage (Glaciology 🗻)
The Wolstonian Stage is a middle Pleistocene stage of the geological history of Earth from approximately 374,000 until 130,000 years ago. It precedes the Last Interglacial and follows the Hoxnian Stage in the British Isles. It is also approximately analogous to the Warthe and Saalian stages in northern Europe; the Riss glaciation in the Alps; an...
https://en.wikipedia.org/wiki/Wolstonian_Stage
#WolstonianStage #IceAges #Glaciology #Pleistocene #StoneAgeBritain
Gaskiers glaciation (Glaciology 🗻)
The Gaskiers glaciation is a period of widespread glacial deposits that lasted under 340,000 years, between 579.88 ± 0.44 and 579.63 ± 0.15 million years ago — i.e. late in the Ediacaran Period — making it the last major glacial event of the Precambrian. It was also the last and the shortest of at least three major ice ages in the Neoproterozoic era.
Don Glaciation (Glaciology 🗻)
The Don Glaciation, also known as the Donian Glaciation and the Donian Stage, was the major glaciation of the East European Plain, 0.8–0.5 million years ago, during the Cromerian Stage of the Middle Pleistocene. It is correlated to Marine Isotope Stage 16, approximately 650,000 years ago, which globally contained one of the largest g...
https://en.wikipedia.org/wiki/Don_Glaciation
#DonGlaciation #IceAges #Glaciology #Pleistocene #GeologyOfEurope #Paleoclimatology
What Caused the #IceAges? : Medium
The First #BigData Drop From the #Euclid #Space #Telescope Unlocks a ‘#TreasureTrove’ of #Insights on the #Universe’s #Mysteries : Misc
Is #DarkEnergy Getting Weaker? New #Evidence Strengthens the Case. : Quanta Mag
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Ice Ages interview: ‘People Are Not Responsible For The Actions Of Their Leaders’ #IceAges
Urstrom (Paleogeography 🦕)
The Urstrom is a geologists' name for a great glacial age river of the Polish and north German plain, which drained the combined melt-waters from the northern headwaters of the Alps and the southern part of the Scandinavian ice during the Devensian ice age.
#IceAges and Early #Humans : Medium
10 stunning #JamesWebbSpaceTelescope images show the #Beauty of #Space : New Sci
#Monkeys will never type #Shakespeare, study finds : BBC
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