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🔦 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.

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

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

Reminder that the #AusQuaternary AGM is happening this Friday! A wonderful time to renew your membership if you haven't already...

https://aqua.org.au/membership/become-an-aqua-member/

#QuaternaryScience

Another excellent edition of Quaternary Australasia is out! I always enjoy the post-conference student reports, especially when the students seem to have really gotten into the 'AQUA vibe'!

#AusQuaternary #QuaternaryScience #Palaeoclimate #paleoclimate

Dating Speleothems and Speleothem Growth

On Sunday I was invited to give a Science Forum webinar to the Australasian Cave and Karst Management Association. The topic was 'Dating Speleothems and Speleothem Growth'. The recording is now up on the ACKMA website. Although the talk was aimed as cave managers and guides, I hope it will be useful for anyone interested in caves and how they can be dated, as well as educators in the field of landscape evolution, Quaternary Science, stalagmite paleoclimate and caves and karst geomorphology.

http://andy-baker.org/2024/07/31/dating-speleothems-and-speleothem-growth/

#caves #karst #stalagmites #science #QuaternaryScience #earthscience #geology #geochronology

For our final, lucky last trip into the Quaternary Australasia archive, we're going back to just last year (vol 39 no 1). I loved reading these stories compiled by Rachel Rudd of times when fieldwork didn't go to plan, but turned out okay

You can read the full article on p.18: https://aqua.org.au/wp-content/uploads/2022/06/1934-AQUA-Quaternary-Vol-39-July-2022.pdf

Thanks for following along over the last few months, and happy 40th anniversary, Quaternary Australasia! #QuaternaryScience

The top half of a magazine article in two columns, with black text on a white background, a photograph on the right of a bent metal core, and a headline in orange that reads: '"...hang on, has anyone seen my field notebook?" Tales of mishap and problem-solving from the field'. Body text in reads: "That’s happened to other people too, right? Maybe it wasn’t a notebook filled with precious observations, but perhaps you’ve trekked out to a remote field site and realised you’re missing a GPS, an important cable, or even a handy spanner? One of my favourite things about my work is the varied nature of the tasks I do each day, and the challenges that invariably arise. I don’t necessarily love the challenges themselves, but the satisfaction of thinking on my feet and finding a creative solution to a problem is satisfying. Sometimes things just don’t go to plan though, so I put the call out to the Australasian Quaternary community to see how you tackle the challenges you come across [cont.]"

As we near the end of our journey into the Quaternary Australasia archive, we're in 2010 (vol 27 no 2) reading about the AQUA conference on Minjerribah (North Stradbroke Island). Next year's conference will be there again!

Full issue here: https://aqua.org.au/wp-content/uploads/2013/06/QA_Vol-27_No-2_Dec-2010.pdf

Next week will be the last dive into the archive, as the 40th anniversary issue (vol 40 no 2) will be released! #QuaternaryScience

An article in a magazine in two columns, black text on a white background, titled "Australasian Quaternary Association Biennial conference: North Stradbroke Island, Queensland 11th-16th July 2010" by S. Louise Callard, School of Geography, Environment and Earth Science, Victoria University of Wellington. A photograph shows cards parked along a road in front of the University of Queensland's Moreton Bay Research Station. Text begins: "The biennial meeting of the AQUA took place between July 11th and 16th on the idyllic ‘sub-tropical’ North Stradbroke Island (NSI), located in Moreton Bay, southeast Queensland. The meeting was held at the University of Queenland’s Moreton Bay Research Station, located within the small community of Dunwich. The island is the second largest sand island in the world and was formed and shaped during windy, arid phases of the Quaternary making the island an appropriate location for this meeting. Conference registration opened on Sunday 11th July [cont.]"

An article from a magazine in two columns of black text on a white background, with a large photo at the bottom of the page showing a deep orange sunset over water, with a caption that reads: "Sunset from Cylinder headland (photo Kirsty Wilkes)." Text of the article begins: "chronostratigraphic studies in the Willandra Lakes World Heritage Area and how this approach can aid insights into indigenous Australian response to long-term landscape and climate change. The afternoon continued with the NZ/OZ-INTIMATE (INTegration of Ice, Marine and TErrestrial records) meeting where discussions concentrated on how to progress the Australian component of the INTIMATE project. The day’s events concluded with a well executed Quaternary trivia quiz conducted by Tim Barrows combined with a few alcoholic beverages to stimulate the brain cells. Wednesday was a talk-free day and instead the time was filled by a field trip of North Stradbroke Island (see report in this issue). Presentations [cont.]"

If you are interested in paleoclimate, Quaternary environments, cave science or speleothem science, this pre-print might be of interest

The global speleothem isotope database SISAL has been updated to version 3. The oxygen and carbon isotope data included in previous versions of the database have been substantially expanded.

SISALv3, contains speleothem data from 364 sites from across the globe, including 94 Mg/Ca, 83 Sr/Ca, 51 Ba/Ca, 25 U/Ca, 29 P/Ca and 14 Sr-isotope records. The database also has increased spatiotemporal coverage for stable oxygen (831) and carbon (588) isotope records compared to SISALv2.

Want to read more? The preprint is:

SISALv3: A global speleothem stable isotope and trace element database, led by Nikita Kaushal and co-authors, and the preprint is now accessible and open for interactive public discussion until 18 Oct 2023 at: https://essd.copernicus.org/preprints/essd-2023-364/

#science #environment #paleoclimate #caves #QuaternaryScience #academia #research #isotopes #stalagmites #SISAL

#QuaternaryScience

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