Lynn Soreghan
@lsoreghan.bsky.social
OU Geosciences; paleoclimate, dust & loess, ice, weathering, Anthropocene, mom, avid reader. Earth is my favorite planet.
At first glance through the interminable TOC of the latest Geophysical Research Letters I misread the title of this paper and was briefly buoyed by the thought of GRLs' foray into women's health.
November 3, 2025 at 3:33 PM
At first glance through the interminable TOC of the latest Geophysical Research Letters I misread the title of this paper and was briefly buoyed by the thought of GRLs' foray into women's health.
The perplexing (to me, anyway) phenomenon of laminated loess deposits (Bignell Hill, Nebraska)
October 28, 2025 at 4:02 PM
The perplexing (to me, anyway) phenomenon of laminated loess deposits (Bignell Hill, Nebraska)
I love finding tiny asters that manage to elude the high blades of late summer mowers.
October 11, 2025 at 1:16 PM
I love finding tiny asters that manage to elude the high blades of late summer mowers.
Little bits of beauty
October 5, 2025 at 4:35 AM
Little bits of beauty
A tiny but tangible example of how government dysfunction degrades educational opportunities. NP closures meant replacing hikes with road cuts. Still, no one can take away the beauty of NM sunsets
October 5, 2025 at 4:34 AM
A tiny but tangible example of how government dysfunction degrades educational opportunities. NP closures meant replacing hikes with road cuts. Still, no one can take away the beauty of NM sunsets
Another great day on the rocks, culminating in another New Mexican sunset.
October 4, 2025 at 3:20 AM
Another great day on the rocks, culminating in another New Mexican sunset.
Distracting ourselves from the news cycle with New Mexican geology
October 3, 2025 at 2:09 AM
Distracting ourselves from the news cycle with New Mexican geology
It's eolian time. How about some small-scale eolian sand stratification (grain flows, grain fall, and translatent; from the Miocene of Argentina) contrasted with the lack of any such features (other than conchoidal fracturing) in this massive loessite (Permian of Colorado).
October 1, 2025 at 12:20 AM
It's eolian time. How about some small-scale eolian sand stratification (grain flows, grain fall, and translatent; from the Miocene of Argentina) contrasted with the lack of any such features (other than conchoidal fracturing) in this massive loessite (Permian of Colorado).
Took a walk along the lake and ran across this paleosol (Permian Garber Fm)...sporting some great root traces.
September 15, 2025 at 1:29 AM
Took a walk along the lake and ran across this paleosol (Permian Garber Fm)...sporting some great root traces.
This one’s for you, Joe— from a Croatian terra rossa
September 8, 2025 at 9:35 PM
This one’s for you, Joe— from a Croatian terra rossa
Imagine how jiggly this sand must have been when newly deposited, as water escaped to form these dish structures. (A boulder from Cretaceous turbiditic strata, Southern California)
August 27, 2025 at 3:00 AM
Imagine how jiggly this sand must have been when newly deposited, as water escaped to form these dish structures. (A boulder from Cretaceous turbiditic strata, Southern California)
And now for more weather in a (deep-time) rock: inferred ice crystals from ca. 300 million years ago, a sort of lagerstätte, preserved in the Usclas Fm (France). For more details, see pubs.geoscienceworld.org/gsa/geology/...
August 25, 2025 at 5:42 PM
And now for more weather in a (deep-time) rock: inferred ice crystals from ca. 300 million years ago, a sort of lagerstätte, preserved in the Usclas Fm (France). For more details, see pubs.geoscienceworld.org/gsa/geology/...
New semester teaching paleoclimate, and depositional systems, so here is one of my favorite rocks, archiving both weather and climate: a dust (loess) deposit with raindrop imprints (largest ~5 mm diameter). Permian Maroon Fm (CO), recording a light (afternoon?) shower of some 300 million yrs ago.
August 24, 2025 at 7:44 PM
New semester teaching paleoclimate, and depositional systems, so here is one of my favorite rocks, archiving both weather and climate: a dust (loess) deposit with raindrop imprints (largest ~5 mm diameter). Permian Maroon Fm (CO), recording a light (afternoon?) shower of some 300 million yrs ago.
A purchase that made my day; thank you USPS
August 21, 2025 at 6:06 PM
A purchase that made my day; thank you USPS
Who else longs to live in a house of mud? Earth is such a superior building material.
August 14, 2025 at 4:38 PM
Who else longs to live in a house of mud? Earth is such a superior building material.
Finally out... giant grains in eolian dust from Earth's deep-time record...
pubs.geoscienceworld.org/sepm/jsedres...
pubs.geoscienceworld.org/sepm/jsedres...
July 30, 2025 at 3:31 PM
Finally out... giant grains in eolian dust from Earth's deep-time record...
pubs.geoscienceworld.org/sepm/jsedres...
pubs.geoscienceworld.org/sepm/jsedres...
@lilzrockz.bsky.social
Our new work out-- a preliminary test of the impact of volcanic aerosols on biogeochemical cycling in deep time... #dust #LPIA #volcanoes doi.org/10.1016/j.gl...
Our new work out-- a preliminary test of the impact of volcanic aerosols on biogeochemical cycling in deep time... #dust #LPIA #volcanoes doi.org/10.1016/j.gl...
March 26, 2025 at 2:07 AM
@lilzrockz.bsky.social
Our new work out-- a preliminary test of the impact of volcanic aerosols on biogeochemical cycling in deep time... #dust #LPIA #volcanoes doi.org/10.1016/j.gl...
Our new work out-- a preliminary test of the impact of volcanic aerosols on biogeochemical cycling in deep time... #dust #LPIA #volcanoes doi.org/10.1016/j.gl...
Oklahoma living up to its reputation this late-winter afternoon...
March 14, 2025 at 5:28 PM
Oklahoma living up to its reputation this late-winter afternoon...
Microbial crusts: helping resist (erosion) for billions of years. [Negev Loess, Israel]
March 3, 2025 at 1:45 PM
Microbial crusts: helping resist (erosion) for billions of years. [Negev Loess, Israel]
African dust trapped in beach rock, Puerto Rico.
February 25, 2025 at 3:59 AM
African dust trapped in beach rock, Puerto Rico.
Some robust taproots developed in Permian loessite of the lower Cutler Beds (Utah). Imagine the Permian vegetation, desperately seeking what they needed to survive; in trying times, remember the resiliency of the primary producers.
February 17, 2025 at 3:58 PM
Some robust taproots developed in Permian loessite of the lower Cutler Beds (Utah). Imagine the Permian vegetation, desperately seeking what they needed to survive; in trying times, remember the resiliency of the primary producers.
The Loess Plateau in early spring
February 3, 2025 at 1:45 PM
The Loess Plateau in early spring
Loess (wind-blown silt) accumulates from suspension and thus is typically massive (structureless). This example of loessite (lithified loess) demonstrates this property particularly well-- it fractures like a giant piece of obsidian. From the Permian Maroon Formation, Colorado.
January 20, 2025 at 10:08 PM
Loess (wind-blown silt) accumulates from suspension and thus is typically massive (structureless). This example of loessite (lithified loess) demonstrates this property particularly well-- it fractures like a giant piece of obsidian. From the Permian Maroon Formation, Colorado.
Sand-filled cracks in muddy inter-dune sediment, Miocene Río Negro Formation.
January 13, 2025 at 3:31 PM
Sand-filled cracks in muddy inter-dune sediment, Miocene Río Negro Formation.
A pyroclast plopped into rippled, volcaniclastic lake deposits. (Carboniferous, France)
January 6, 2025 at 2:38 PM
A pyroclast plopped into rippled, volcaniclastic lake deposits. (Carboniferous, France)