Wolfgang TraylorAug 1

What did Beringia look like in the last “ice-age?” Alistair Monteath et al.¹ have just published an impressive review article!
I will need some time to read through it.
The more detailed fossil-based understanding of vegetation and soil is really important for a clearer picture of the plant–herbivore interactions. In the end, it’s so much more complex than the naïve concept of a homogenous mammoth steppe grassland…

¹ https://doi.org/10.1016/j.quascirev.2025.109527
#Beringia #Mammoth #Pleistocene #Quaternary

💧🌏 Greg CocksJun 9
14,000 Years Ago, The Most Powerful Solar Storm Ever Recorded Hit Earth - This Event Establishes A New Worst-Case Scenario
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https://www.space.com/astronomy/sun/14-000-years-ago-the-most-powerful-solar-storm-ever-recorded-hit-earth-this-event-establishes-a-new-worst-case-scenario <-- shared technical article
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https://doi.org/10.1016/j.epsl.2025.119383 <-- shared paper
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“A storm as ferocious as the one of 12,350 BC would likely cause complete mayhem if it were to strike Earth and its surrounding space today..."
#spaceweather #prehistoric #extremesolarparticleevents #CCMSOCOL #14CEx #Radiocarbon #GlacialEpoch #solarstorm #infrastructure #risk #hazard #radiocarbon #IceAge #model #modeling #glacial #climate #geomagnetism #magnetic #protons #carbon14 #Quaternary #geology #treerings
Universität InnsbruckMay 22

🔦 Feldforschung in Alaska: Der #Geologe Paul Wilcox entdeckte dort in einer schwer zugänglichen Höhle rund 20.000 Jahre alte Ablagerungen. Eine Analyse dieser Proben erlaubte Rückschlüsse über das Ende der letzten #Eiszeit und darüber, wie das Abschmelzen der riesigen Gletscher damals vor sich ging.

🆕 https://www.uibk.ac.at/de/newsroom/2025/alaska-hohlensedimente-dokumentieren-letzteiszeitliche-klimadyna/

📖 https://www.nature.com/articles/s41561-025-01694-4

#Geologie #Paläoklima #quaternary #quaternaryScience #paeloclimate

Alaska: Höhlensedimente dokumentieren letzteiszeitliche Klimadynamik

Paul Wilcox, Geologe an der Universität Innsbruck, entdeckte erstmalig landbasierte Belege für Schmelzwasserimpulse während der letzten Eiszeit vor etwa 20.000 Jahren. Das Alter der Höhlensedimente wurde mit Hilfe optischer Datierungsmethoden bestimmt. Die aus den Sedimenten gewonnenen Daten tragen entscheidend dazu bei, die Abfolge der Klimaereignisse, die damals zu einer Erwärmung des Planeten führten, zu rekonstruieren.

Jeff MunroeMay 21
Great field trip stop with a view of the 21,000-year old left lateral moraine from the Little Cottonwood Canyon glacier cut by multiple strands of the Wasatch Fault. #geology #utah #Quaternary
Jeff MunroeMay 6
Final lab of the semester for my Quaternary Geology class was a sporting one: fording the river and digging out a nice exposure of 14,000-year-old varves from proglacial Lake Vermont. #geology #Quaternary #Vermont #spring #outside
Dr Micha CampbellApr 29

Dear #EGU25 attendees, please consider going along to our session, "CL1.2.12 Understanding carbon cycle – climate interactions during the Quaternary through the study of oceanic circulation, vegetation, and wildfire", which is taking place on Friday.

https://meetingorganizer.copernicus.org/EGU25/session/51797

@paleofire #palaeofire #Fire #carbon #Quaternary #QuaternaryScience

Session CL1.2.12

Jeff MunroeApr 23
Students in my Quaternary Geology course came at this exposure from the bottom up, and the top down -- a curious sequence of basal till overlain by silty lake sediments deformed by a later glacial readvance. #geology #earthscience #vermont #Quaternary #outside
Jeff MunroeApr 16
After gaining experience at a fairly straightforward site, students in my Quaternary Geology course have moved on to more complicated exposures. This one here reveals basal till beneath proximal subaqueous outwash that was deformed by a readvance. Great stuff! #vermont #geology #EarthScience #glacial #Quaternary #outside
💧🌏 Greg CocksApr 15
Understanding Geological Time With Associate Professor Stijn Glorie [video]
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https://youtu.be/H2M2ZuVe9pE?si=iTahPKcOe2q2Yhs5 <-- shared video
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“A/Prof Stijn Glorie is a geochronologist at University of Adelaide who uses radio-isotope decay to date rocks, revealing Earth’s evolution and aiding insights into mountains, ores, and climate-tectonics links…”
#geology #time #learning #education #dating #age #epochs #understanding #rocks #structuralgeology #Quaternary #conception
Understanding geological time with Associate Professor Stijn Glorie

YouTube
Dr Micha CampbellApr 10

Always a good day when friends have a good day! Out today in NATURE (!) from Monika Markowska - 8 million year record of recurrent humid phases in Arabia.

https://www.nature.com/articles/s41586-025-08859-6

#Quaternary #QuaternaryScience #speleothem #speleothems #palaeoclimate

Recurrent humid phases in Arabia over the past 8 million years - Nature

A climatic record from desert speleothems shows that the central Arabian interior experienced recurrent humid intervals over the past 8 million years, which likely facilitated mammalian dispersals between Africa and Eurasia.

Nature