Exciting Bermuda Day 3 for our @oxuniearthsci.bsky.social undergrads on board the RV Atlantic Explorer with expert guidance from @stannescollege.bsky.social + Earth Sciences alumna Eloise! Sampling and processing water from down to 3500 m depth in the subtropical Atlantic.
@oxuniearthsci.bsky.social 2025 Bermuda trip is complete! We were super lucky to see a trichodesmium bloom in the Sargasso Sea and sampled an anoxic layer in Harrington Sound (usually fully mixed at this time). Bermuda is a perfect location to bridge modern and paleo ocean-climate processes!
We've had an amazing two days welcoming visitors from far and wide to the Department as part of the University of Oxford Open Days. It was a joy to meet so many brilliant aspiring geoscientists and their families!
#booksky #writingcommunity
Photograph of Hugh Jenkyns (University of Oxford; left) receiving the Lyell Medal from Geological Society President, Jon Gluyas.
.. delighted to see recognition for Hugh Jenkyns (@oxuniearthsci.bsky.social) who published his first paper in 1967, discovered Ocean Anoxic Events in the 1970s, and is still publishing papers on the Jurassic today!
New research has shown rivers release ancient carbon dioxide into the atmosphere, uncovering a greater role for plants and soil in the carbon cycle π±
Featuring @profbobhilton.bsky.socialβ¬
Read the full story: buff.ly/yv82d3X
Fantastic day @oxuniearthsci.bsky.social doing a sedimentary journey through the Triassic and Jurassic! Oo-tastic @drsturobinson.bsky.social
I'm always the same when I'm there in person but EGU posts also seem to have the same effect!
It means nothing to me.
The #EarthSciences are under threat at Australian universities. As Rhodi Davies and Dorrit Jacob from ANU highlight: "climate resilience, sound environmental policy and energy security all begin with understanding the planet we live on" www.timeshighereducation.com/opinion/eart...
Nitrogen isotopes are a promising tool to reconstruct symbiosis in planktic foraminifera!
Check out our latest paper:
bg.copernicus.org/articles/22/...
PANGAEA is rescuing numerous datasets scheduled for decommissioning in May. PANGAEA has opened its archive to help safeguard these valuable resources. If you become aware of other endangered datasets, please contact them. Importantly, let others know where to find the data.
www.pangaea.de
I'm on an " #AmmoniticoRosso " thing at the moment... my niece has been sending me pictures from Verona Arena today. With actual ammonites... and rosso
A light blue diagram depicting the sea, with the water's surface at the top, and just below it is an outline of the Mary Rose, with the depth (12m, 40ft or 6.7 fathoms). There is a line showing the seabed, which takes a rapid dive into the vertical...
On the anniversary of the sinking of the Titanic, we thought we'd answer a question that's often asked,
"If they raised the Mary Rose, why not raise the Titanic?"
Allow our scaled diagram to explain...
Summer projects available for undergraduate students with Tamsin Mather, Joost Frieling and I @oxuniearthsci.bsky.social - please pass on to your students!
Lacustrine ooids and coated grains (mainly ostracods) from the Eocene Green River Formation, UT (USA). #ThinSectionThursday
Congratulations Anjali!
Just one of the best thin section images you're likely to see. Brightly coloured fresh olivines in blues, yellows, and oranges among smaller black, white and grey plagioclases, which generally define a fabric from left to right.
The isle of RΓΉm and its layered intrusion remain undefeated for thin sections. Foliated troctolite (ol+plag) or 'allivalite' from Hallival, in the NMS rock collection. #ThinSectionThursday
Sedimentary structures formed in a fine sand - caused by a bust water main.
Sedimentary structures formed in a fine sand - caused by a bust water main.
Sedimentary structures formed in a fine sand - caused by a bust water main.
Sedimentary structures formed in a fine sand - caused by a bust water main.
Some excellent sedimentary structures at the junction of Cecil St and Peel St in Derby courtesy of the burst water main. Thanks to Severn Trent for the 3 day experimental run. #Streetsedimentology
March 24, 1960, the CUSS I - a former oil drill ship - departs the harbor of San Diego (California) as part of Project Mohole, an attempt to sample the oceanic lithosphere & the MohoroviΔiΔ discontinuity.
www.vox.com/unexplainabl...
New post on Mary Lyell - one of the least-known pioneering Earth sci women despite her deep involvement in husband Charles Lyell's life and science and their network of geologist colleagues, including Darwin, Agassiz, Murchison, et al.
www.geological-digressions.com/mary-lyell-1...
βοΈπ§ͺ
Fossil mollusk shells with some of their original coloration in a shell bed in a boulder on the beach in Santa Cruz CA. A rock hammer is there for scale. The shells are between 1 and 8 cm in width.
#fossilfriday a shell bed in the Purisima Formation at Capitola, northern CA coastline, early Pliocene (4.9-5.3 Ma). Many of the shells retain much of their original coloration!
Image from linked write up on the Cryogenian glaciations and Earth's tectonics showing the configuration of continents and oceanic crust of different ages (from dark (oldest) blue-black to light (youngest) blue-white) based on a geologically constrained model (left) and a paleomagnetically constrained model (right). The continents are somewhat different but the oceanic crust's age is extremely different. The left image shows mostly old oceanic crust while the right image shows a large amount of young oceanic crust.
An neat write up of what may have caused the planet covering glaciations between 720 million and 635 million years ago based on a geologically constrained global plate model: large-scale shut down of oceanic spreading centers decreases CO2 release.
(Figure from link.)
www.earthbyte.org/9984-2/
Postdoc on stegosaurs with Roger Benson at the AMNH careers.amnh.org/postings/4384
Many congratulations to this year's Geological Society medallists and award winners!
www.geolsoc.org.uk/About/Press-...
π π§ͺ The belts and escalators represent the organized flow of water, and the wandering of the people is the turbulent mixing superimposed on this organized flow. Although not perfect, this analogy does capture the important factors influencing the distribution of nutrients in the sea. -
February 16, 1832, the crew of the HMS Beagle disembarks to explore a tiny set of islands off the coast of Brazil.
Charles Darwin recognized they were made from serpentinite thanks to a geological field-trip made one year earlier...
This #InternationalDayofWomenandGirlsinScience we we sat down with four of our amazing women researchers to hear their stories!
Watch the videos on our YouTube channel: t.co/QFMFs9MFUF
Gradients governing the presence and appearance of microbialites, including water depth (left) and ecological stress)
Microbialites (sedimentary buildups formed by microbial activity) were very common in the Proterozoic, but other groups took over in the Phanerozoic. But when the environment is stressed, they come back - and we can use them to infer on past stress gradients. π§ͺβοΈ
www.sciencedirect.com/science/arti...
