Lynn (Gerilyn) Soreghan

Professor of Geosciences-- @ougeosciences
Paleoclimate, dust, glaciation, weathering, Anthropocene. Avid reader. Earth is my favorite planet.

[Lynn (Gerilyn) Soreghan @LSoreghan]

Find me on @lsoreghan.bsky.social

[Lynn (Gerilyn) Soreghan @LSoreghan]

And now for some inferred ice-crystal impressions... from perhaps a crisp winter morning roughly 295 million years ago (Usclas Formation, Massif Central, France). Published in https://t.co/oZdNTh5neA #paleoweather #lagerstätte #scicomm #ice

[Lynn (Gerilyn) Soreghan @LSoreghan]

@blepharopsis Aha-- like being finger-printed. All you need is a wee bit of dust.

[Lynn (Gerilyn) Soreghan @LSoreghan]

Raindrop impressions-- a light sprinkling from perhaps a Tuesday afternoon, some 300 million years ago, give or take. From the Maroon loessite, Colorado. #loess #dust #raindrop #paleoweather

[Lynn (Gerilyn) Soreghan @LSoreghan]

@Fuzzyraptor @astropierre Une bonne question

[Lynn (Gerilyn) Soreghan @LSoreghan]

@Astro_Aure The sediment was once dust (loess)-- powder-like. So it can preserve fine detail. In this aspect, it is similar to volcanic ash. Over millions of years, and burial, it converted to siltstone, but held the imprints.

[Lynn (Gerilyn) Soreghan @LSoreghan]

@auroberix @astropierre La pluie tombait sur de la poussière (le loess), un sédiment poudreux qui préservait les gouttes. Puis, davantage de poussière se déposa et, après l'enfouissement et des millions d'années, la poussière (et les traces de gouttes de pluie) se transformèrent lentement en siltite.

[Lynn (Gerilyn) Soreghan @LSoreghan]

@climate_ice stay tuned

[Lynn (Gerilyn) Soreghan @LSoreghan]

@ellie_gbr Not that I'm aware-- what a cool idea!

[Dr. Davey F. Wright ⛏️🦕🧬 @Davey_F_Wright]

Still time to apply to these incredible curator/prof positions in Ornithology & Invertebrate Zoology! Review of applications begins on October 23

[Lynn (Gerilyn) Soreghan @LSoreghan]

https://t.co/josbrEIhNj
#lynx #balkans #scicomm

[Lynn (Gerilyn) Soreghan @LSoreghan]

In honor of Thin-Section Thursday, here is a really disrupted rock. Field of view ~10 mm on left and ~5 mm on right. Plane light. Black is hematite, the rest mostly quartz and very altered feldspar with a few mafics. The origin of the disruption remains under study.

[Lynn (Gerilyn) Soreghan @LSoreghan]

To boldly go into the core lab in search of really old core... and discover some from an age when split infinitives were less acceptable.

[Lynn (Gerilyn) Soreghan @LSoreghan]

Re-posting one of my favorite pics of small-scale eolian stratification (and translatent beneath the grain flows)

[Andrew Ahern @AndrewsonEarth]

Here are four images that shows capitalisms immense failure to bring about environmental, economic & social wellbeing.

1. 6 of the 9 planetary boundaries have been crossed
2. Poverty is increasing
3. Inequality is getting worse
4. Hunger inflicts 1 in 10 people around the world

[Steve Campbell @Historian_Steve]

Your periodic reminder that less ice at the Arctic is consistent with a weaker jet stream that allows cold air to drift down into the Great Plains.

The frigid temps you're experiencing happen BECAUSE of a warming planet, not in spite of it.

[invalid @TulsaTeresa]

Yep, that’s ⁦@GovStitt⁩ for you.

[The White House 46 Archived @WhiteHouse46]

Reminder: Not a single Congressional Republican voted for President Biden’s Inflation Reduction Act capping insulin costs at $35 a month for seniors on Medicare.

[#WOMENSART @womensart1]

Polish artist Nespoon creates street art featuring lace patterns #WomensArt

[Channel 4 News @Channel4News]

An undercover sting operation has exposed a Saudi Arabian government plan to artificially raise global oil demand just days before climate crisis talks begin in the UAE, Channel 4 News can reveal.