Lightnews — Scholar-powered news

Dawid Szymanowski @sdawid.bsky.social · Sep 4

Happy to share the long-awaited results of our community experiment comparing high-precision ID-TIMS U-Pb lab performance🧪⚒️
We do pretty well but as ever there is room for improvement 🤓 Stay tuned!

doi.org/10.5194/gchr...

Interlaboratory reproducibility of ID-TIMS U–Pb geochronology evaluated with a pre-spiked natural zircon solution

Abstract. The highest precision and accuracy in U–Pb geochronology is achieved using isotope dilution thermal ionisation mass spectrometry (ID-TIMS), a technique which owes its reliability to precise ...

doi.org

1 4 10

Dawid Szymanowski @sdawid.bsky.social · Aug 26

Interesting new Rb-Sr data and summary of the chronology of #Moon formation 🧪⚒️

tinyurl.com/2ztta42d

The age and early evolution of the Moon revealed by the Rb-Sr systematics of lunar ferroan anorthosites

The formation of the Moon by a giant impact of an object called Theia onto proto-Earth marks the end of the main stage of Earth’s accretion. However, …

tinyurl.com

2 4

Reposted by Dawid Szymanowski

Abby @abigaillily.bsky.social · Aug 13

An unexpected discovery of IODP Exp 398! 200 m of ash from the Kos Plateau Tuff eruption buried in the basins around Santorini, read how it got there in our new paper in Science Advances 🌋
www.science.org/doi/10.1126/...

Submarine ash megabed fed by far-traveled, shoreline-crossing pyroclastic currents from a large explosive volcanic eruption

Volcanic ash from an eruption in Greece poured into the sea, forming a bed 200 m thick in a submarine basin far from the volcano.

www.science.org

1 8 8

Reposted by Dawid Szymanowski

Science Magazine @science.org · Jun 26

The Nuvvuagittuq Greenstone Belt— a complex geological sequence in northeastern Canada—harbors surviving fragments of Earth’s oldest crust, dating back to ~4.16 billion years old, according to a new Science study.

Learn more: scim.ag/3FXN8sq

Evidence for Hadean mafic intrusions in the Nuvvuagittuq Greenstone Belt, Canada

Many questions remain regarding Earth’s earliest crust owing to the rarity of Hadean (>4.03 billion-year-old) rocks and minerals. The Nuvvuagittuq Greenstone Belt (NGB) in Canada may be the only known...

scim.ag

2 20 73

Reposted by Dawid Szymanowski

Wim Meijer @wimgmeijer.bsky.social · May 11

1456, the Duke of Milan established a medical institution dedicated to caring for the city’s poor and sick on a scale unprecedented in Europe.

Admission was based on lack of income, not religious affiliation.

It was the first secular hospital in Europe..

🧪

www.science.org/content/arti...

Thousands buried in 17th century Italian crypt reveal lives of working poor

Remains recovered from beneath a Milan hospital shed light on health, diet, and drug habits during the 1600s

www.science.org

13 58

Dawid Szymanowski @sdawid.bsky.social · Feb 20

New study in GChron led by Chetan Nathwani - looking at what controls the shape of #zircon U-Pb date distributions in magmatic rocks and what meaningful info they can provide ⚒️🧪

gchron.copernicus.org/articles/7/1...

Controls on zircon age distributions in volcanic, porphyry and plutonic rocks

Abstract. The distribution of zircon crystallisation ages in igneous rocks has been proposed to provide insights into the dynamics of underlying magma reservoirs. However, the ability to interpret mag...

gchron.copernicus.org

1 5

Reposted by Dawid Szymanowski

Georg Zellmer @gzellmer.bsky.social · Jan 23

www.pnas.org/doi/10.1073/...

Postdoc publications and citations link to academic retention and faculty success | PNAS

Postdoctoral training is a career stage often described as a demanding and anxiety-laden time when many promising PhDs see their academic dreams sl...

www.pnas.org

3 4

Reposted by Dawid Szymanowski

Earth and Planetary Sciences at ETH Zurich @eth-eaps.bsky.social · Jan 17

#postdoc (or #phd) #jobalert
The Experimental Planetology research group at @ethzurich.bsky.social is offering a Postdoc in Experimental Geochemistry and on the determination of liquid iron alloy densities with application to the Moon's and other planets core.

Postdoc (or PhD) position in Experimental Geochemistry

The Experimental Planetology Group of the Department of Earth and Planetary Sciences (D-EAPS) invites applications for a 2-yr post-doctoral position on the experimental determination of liquid iron…

www.jobs.ethz.ch

5 4

Reposted by Dawid Szymanowski

Seb Breitenbach @speleoseb.bsky.social · Jan 18

Cave folks - here some must-read for your weekend! 😛#speleothem, #caves, #volcano, #climate - what else you want?! 👇 @pucicu.de @olakwiecien3.bsky.social @cavesandclimate.bsky.social

Sophie Warken @swinnyy.bsky.social · Jan 16

Excited to share our latest research published in @science.org #ScienceAdvances! 🎉
We've discovered the Laacher See eruption 🌋 in a speleothem from Germany, which allows to synchronize European and Greenland Late Glacial climate change.

Read more: www.science.org/doi/10.1126/...

A Thread ⬇️⬇️ 1/n

Discovery of Laacher See eruption in speleothem record synchronizes Greenland and central European Late Glacial climate change

A volcanic sulfur spike links the Laacher See eruption to Greenland ice cores and synchronizes the timelines to European records.

www.science.org

2 10

Dawid Szymanowski @sdawid.bsky.social · Jan 7

🧪

Dawid Szymanowski @sdawid.bsky.social · Jan 6

New study in PNAS: Apollo samples reveal that KREEP, the magma left after the #Moon was >99% solidified, formed 4.43 billion years ago. 🌘 This implies the Moon was born no later than ca. 140 My after the solar system’s birth. 🧪 ⚒️ @eth-eaps.bsky.social

www.pnas.org/doi/10.1073/...

www.pnas.org

8

Dawid Szymanowski @sdawid.bsky.social · Jan 6

New study in PNAS: Apollo samples reveal that KREEP, the magma left after the #Moon was >99% solidified, formed 4.43 billion years ago. 🌘 This implies the Moon was born no later than ca. 140 My after the solar system’s birth. 🧪 ⚒️ @eth-eaps.bsky.social

www.pnas.org/doi/10.1073/...

www.pnas.org

1 9 26

Reposted by Dawid Szymanowski

Jim Metcalf @thermochronic.bsky.social · Dec 13

So how small are the zircons that we date in the lab? Here's a Fish Canyon Tuff zircon on a $5 bill for comparison!

10 33

Reposted by Dawid Szymanowski

Corey S. Powell @coreyspowell.bsky.social · Jan 6

Clever composite photo lets you see a side of the universe normally hidden to human vision. A camera tuned to hydrogen-alpha light reveals glorious interstellar clouds swirling around the familiar stars of the constellation Orion.
(Photo: Włodzimierz Bubak) 🔭🧪

apod.nasa.gov/apod/ap24122...

This wintry scene was captured from southern Poland on the northern hemisphere's long solstice night. Otherwise unseen nebulae hang in the sky, revealed by the camera modified to record red hydrogen-alpha light. The nebulae lie near the edge of the Orion molecular cloud and join the Hunter's familiar belt stars and bright giants Betelgeuse and Rigel. Eye of Taurus the Bull, yellowish Aldebaran anchors the V-shaped Hyades star cluster near top center. Still, near opposition in planet Earth's sky, the Solar System's ruling gas giant Jupiter is the brightest celestial beacon above this horizon's snowy peaks.

36 180 1.7K

Dawid Szymanowski @sdawid.bsky.social · Jan 6

Hi! Would love to be added:

scholar.google.ch/citations?us...

Dawid Szymanowski

‪ETH Zürich‬ - ‪‪Cited by 924‬‬ - ‪geology‬ - ‪geochronology‬ - ‪geochemistry‬ - ‪petrology‬

scholar.google.ch

1 1