Lightnews — Scholar-powered news

Reposted by Vicky Veritas

Ethan Baxter @ethanrockstory.bsky.social · 1d

⚒️🍎🧪🌋
Welp... it got a little dark by the time we found what we were looking for preserved in the ash from the 1790 tephra layer at Kilauea volcano. Geologist Christina Cauley will tell us the story of this historic eruption that changed Hawaii forever. Amazing!

youtube.com/shorts/53TPd...

We found something incredible persevered in the tephra layer of the 1790 Kīlauea eruption

YouTube video by Ethan Baxter's "Every Rock Has A Story"

youtube.com

4 10

Reposted by Vicky Veritas

Ethan Baxter @ethanrockstory.bsky.social · 1d

⚒️🍎🧪
See where they measure the atmospheric concentration of CO2 and other greenhouse gases. Every Rock Has A Story (yup, there's a rock in this episode too!)

youtube.com/shorts/mvG9R...

See where atmospheric CO2 gets measured: Mauna Loa and Mauna Kea, Hawaii

YouTube video by Ethan Baxter's "Every Rock Has A Story"

youtube.com

5 23

Reposted by Vicky Veritas

Brandon Bishop @brandontbishop.bsky.social · 1d

All US Geoscience Occupations, 2006: 266,100
All US Geoscience Occupations, 2025 (averaged thru Aug.): 282,806

Total increase: 16,706
Percent increase: 5.9%

Predicted increase 2006 to 2016: 51,346 jobs or 19%

Data to do these comparisons is hard to get.

2006 numbers from here:

www.americangeosciences.org

1 2 7

Reposted by Vicky Veritas

Dr. Brendan Anderson @fossilsndcoffee.bsky.social · 1d

Day156 of photoshopping @lastweektonight.com 's #JohnOliver w/ fossils in the hopes that he saves the Paleontological Research Institution

John(H. sapiens) having a lovely time with the Paleozoic Pal of Isotelus gigas ⚒️

#trilobitetuesday #JohnOliverCoprolitasticShed #Paleontology #SavePRI #Cornell

John Oliver sitting on a rock having a conversation with a large brown plush of the trilobite Isotelus maximus

1 8 29

Reposted by Vicky Veritas

Prof Phoebe Barnard @phoebebarnard.bsky.social · 1d

Rainforests create their own rain… eroding them destroys that alarmingly fast. They’re not just lungs of the planet, but a biotic pump of moisture, cooling, sustenance, life open.substack.com/pub/climatew...

Follow Alpha Lo of the Climate Water Project ericagies.bsky.social
@robdelaet.bsky.social

An intriguing behavior of global rain

an exercise

open.substack.com

1 14 47

Reposted by Vicky Veritas

Callan Bentley @callanbentley.bsky.social · 2d

Cool frog.
The rock is not porphyritic though; It's amygdular (amygdaloidal).

The distinction: porphyritic texture involves big crystals surrounded by a mass of much smaller crystals. Amygdules are mineralized volcanic gas bubbles: fossil volcano burps.

Both can manifest as a polka dot pattern.
⚒️

Nina Willburger @drnwillburger.bsky.social · 3d

A marvellous #Egyptian #frog amulet, made of porphyry (height 1.2 cm).
Because of their numerous offspring, #frogs were considered a symbol of fertility.

Dating ca. 1295–1185 BC, New Kingdom.

📷Metropolitan Museum

🏺 AncientEgyptBluesky

A small frog-shaped amulet carved from dark reddish-brown porphyry, patterned with irregular white spots, shown in a crouching position against a plain light background.

2 4 29

Reposted by Vicky Veritas

Erika Anderson @andersonmineral.bsky.social · 2d

It’s Geodiversity Day & Mineral Monday!! So I wanted to show you a rare mineral called carletonite, which is usually bright blue but seen here with a pink zonation. It was discovered here in Canada, at the mineral species rich Mont Saint-Hilaire. #GeodiversityDay #MineralMonday #GeoscienceBluesky ⚒️🧪

Specimen of carletonite with prisms of blue and pink all around. There is one large square crystal with a small blue square in the middle with pink on the outside on the upper right side of the specimen. It sits on a black background. At the Canadian Museum of Nature.

2 18 56

Reposted by Vicky Veritas

Seismological Society of America @seismosocam.bsky.social · 2d

Looking to find new connections and identify potential collaborators in the #seismological community?

Start here, with our newest virtual event for members on 18 November! Our mentors will answer questions and share advice. Registration is here: www.seismosoc.org/jobs/ssa-con... ⚒️

2 3

Reposted by Vicky Veritas

Alisa Bokulich @alisabokulich.bsky.social · 2d

Happy International Geodiversity Day! ⚒️ 🧪 #PhiGeo

@geodiversityday.bsky.social

youtu.be/LtFzkDMsYtI?...

www.geodiversityday.org/what-is-geod...

Geodiversity: Biodiversity's Silent Partner

YouTube video by Oxford Geoheritage Virtual Conference

youtu.be

13 21

Vicky Veritas @vickyveritas.bsky.social · 1d

Wishing you a successful and speedy job hunt, Cian!

1

Reposted by Vicky Veritas

Richard Gibson @richardgibson.bsky.social · 2d

#MineralMonday Barite, Cerro Warihuyn, Miraflores, Huamalies Prov., Huanuco, Peru. 88 mm. ⚒️ #geology . No MAGA! Science = Resistance! #standupforscience

3 10

Reposted by Vicky Veritas

Cian 🏳️‍🌈🏳️‍⚧️ (he/him) @cbdawson.bsky.social · 2d

This is sure to be good! And the topic is all too timely. ⚒️

CUAHSI @cuahsi.bsky.social · 2d

Navigating Academic Waters Webinar Series Continues!
Join us for, Expanding Funding Landscape: Non-Federal Funding Opportunities
OCT 8 / 1-2PM ET

Diversifying funding streams is becoming more important in hydrology and environmental science.
us06web.zoom.us/webinar/regi...

1 2

Reposted by Vicky Veritas

Scripps Institution of Oceanography @scrippsocean.bsky.social · 1d

🌿 🌊 Kelp forests are vital habitats that support marine life, buffer our coasts, and keep our oceans healthy, and Scripps Oceanography scientists are dedicated to protecting them!

🌏 This #WorldHabitatDay, thank #KelpForests for all they do for our planet.

1 18 61

Reposted by Vicky Veritas

Ryan J Hollister @phaneritic.bsky.social · 2d

We all need a little caldera in our life, right?

Long valley caldera from plane window looking north. Crowley lake at bottom of pic. Caldera rim highlight by cumulus clouds popping up over the topographic high. Mono Lake is in the distant top left.

6 7 140

Reposted by Vicky Veritas

Ruth Mottram @ruthmottram.bsky.social · 4d

Incidentally, the very nice schematic of cryosphere changes over both ice sheets was drawn by @jmalumbresolarte.bsky.social Tak! 🙏

New paper out today in @nature Geosciences:
The Greenlandification of Antarctica

Readcube pdf: rdcu.be/eJiqJ

The Greenlandification of Antarctica | Nature Geoscience

Climate and ice sheet processes in Antarctica increasingly reflect those observed earlier in Greenland. Applying process insights from Greenland can improve projections of future Antarctic ice and climate behaviour.

rdcu.be

3 34 82

Reposted by Vicky Veritas

nz-nb.bsky.social @nz-nb.bsky.social · 3d

Antarctic Sea Ice Emerges As Key Predictor Of Accelerated Ocean Warming – Eurasia Review

https://www.newsbeep.com/nz/60707/

A groundbreaking study published today in the European Geosciences Union (EGU) journal Earth System Dynamics provides a critical and previously underestimated…

Antarctic Sea Ice Emerges As Key Predictor Of Accelerated Ocean Warming – Eurasia Review - New Zealand News Beep

A groundbreaking study published today in the European Geosciences Union (EGU) journal Earth System Dynamics provides a critical and previously underestimated

www.newsbeep.com

2 3

Reposted by Vicky Veritas

Hester Jiskoot @glasheologist.bsky.social · 2d

The Dept of Geography & Environment at @ulethbridge.ca is hiring an Instructor: a broadly trained Geographer with strong spatial analytical skills and experience in the geosciences, incl. GIS, Remote Sensing, mapping & spatial modelling. Appl. deadline: 1 Jan 2026. uleth.peopleadmin.ca/postings/8717

Faculty of Arts & Science - Instructor II or III (Geography and Environment)

The Department of Geography & Environment at the University of Lethbridge invites applications for a continuing appointment at the rank of Instructor II or III to commence on July 1, 2026, subject to ...

uleth.peopleadmin.ca

7 6

Reposted by Vicky Veritas

Nadine, Haunter of Rocks 👻 @nadwgab.bsky.social · 3d

278 of #365Minerals 🧪⚒️

Botallackite:
- A copper chloride mineral
- Forms when copper deposits are weathered or exposed to salt water
- Can also be found around hydrothermal vents
- First described in 1865
- Named after Botallack Mine in Cornwall, its type locality #minerals

A finely crystalline crust of botallackite on killas rock. From Botallack Mine, Cornwall, England, UK.

Specimen from the Natural History Museum, London's collection.

1 11 70

Reposted by Vicky Veritas

Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social · 3d

Let's start with the base fact that Neutron Tomography is a really cool thing. Fossils are also very cool (even if they're corals). Combining the two gives a very interesting way to look at diagenesis (or screen for it, if you're boring). 🧪⚒️

Link: agupubs.onlinelibrary.wiley.com/doi/full/10....

Comparison of neutron computed tomography (NCT) scans (a–c) with traditional X-Ray CT image (d) of the modern unaltered Porites sample from One Tree Reef. 3-D voxels measure 0.0395 mm3, sample thickness ca. 1 cm (a) 3-D NCT scan showing full neutron count range 0–65,535, (b) 3-D filter applied showing aragonite data range exclusive of porosity (ca. 12,000–65,535 NC). Histogram shows two distinct peaks representing porosity and aragonite ranges. (c) Cross sections V-V′ and XZ-XZ’ are 2-D slices of the 3-D NCT slab data (39.5 μm resolution) of V (vertical) and XZ (x axis and depth) profiles, respectively. Their positions are indicated by white lines in (a). (d) X-Ray CT image of the same slab used for photos (a, b) showing density variations and blurry low resolution coral morphology.

4 15

Reposted by Vicky Veritas

Callan Bentley @callanbentley.bsky.social · 2d

GORGEous weather today along Mather Gorge. ⚒️

View along a deeply incised bedrock gorge with three paddle boarders

1 2 44

Reposted by Vicky Veritas

Ferwen @ferwen.bsky.social · 2d

I can’t stop watching Jane’s Netflix interview video. What a lost to our planet. What a loss to our humanity.

1 4 30

Vicky Veritas @vickyveritas.bsky.social · 2d

Such a loss. She was a treasure.

1

Reposted by Vicky Veritas

paleoseismicity.org @paleoseismicity.bsky.social · 3d

These are the latest papers on paleoseismology, active tectonics, and archaeoseismology (Oct 2025)
paleoseismicity.org/new-papers-o...

» New papers on paleoseismology, active tectonics, and archaeoseismology (Oct 2025)

paleoseismicity.org

2 3

Reposted by Vicky Veritas

Seismological Society of America @seismosocam.bsky.social · 3d

🌟OPEN ACCESS🌟 In a new #BSSA paper, scientists leverage a dense seismic network, deployed in a complex region with abundant microseismicity, with machine-learning methods. The result illuminates structures and fault geometries. ⚒️

pubs.geoscienceworld.org/ssa/bssa/art...

5 6

Reposted by Vicky Veritas

Joe Mason @moreorloess.bsky.social · 4d

Working on slides for my soil geomorphology course, the last time it will be offered. Putting way too much time into it. Thinking about what I should have published more of, but more about what these very bright, motivated students will be able to with this do in a new, scary world.

A microscopic view of a soil in thin section. There is a caption that says "Illuvial (translocated) clay in pores between peds in a paleosol, eastern Nebraska." The clay forms bright yellow to orange coatings on the walls of pores between aggregates of soil. Within the aggregates are many small silt-size grains of various minerals.

A graph showing water content as a function of matric potential (moisture retention curves) for a mid-Holocene soil, the Brady Soil, coarse loess, and dune sand. The curve for the dune sand is distinctly different from the others. The mid-Holocene paleosol is also distinctive.

3 3 26