I'll keep an eye out for that review. Do you not consider any of the late-paleoproterozoi to Mesoproterozoic multicellular fossils as complex? E.g. the 2024 algae from China. My interest comes from working on mid-proterozoic fossils, + trying to fit them into a wider context.
October 8, 2026 at 5:57 PM
I'll keep an eye out for that review. Do you not consider any of the late-paleoproterozoi to Mesoproterozoic multicellular fossils as complex? E.g. the 2024 algae from China. My interest comes from working on mid-proterozoic fossils, + trying to fit them into a wider context.
Cranberry Gneiss, Mesoproterozoic, 1.05 Ga; Appalachian Mt.s, North Carolina Museum of Natural Sciences
Gneiss is a metamorphic rock that high temp & pressure have caused the minerals in granite to separate into light & dark bands. The light bands are quartz.
#MinCup26 #QuartzDeservesToWin
Gneiss is a metamorphic rock that high temp & pressure have caused the minerals in granite to separate into light & dark bands. The light bands are quartz.
#MinCup26 #QuartzDeservesToWin
October 1, 2026 at 2:39 AM
Cranberry Gneiss, Mesoproterozoic, 1.05 Ga; Appalachian Mt.s, North Carolina Museum of Natural Sciences
Gneiss is a metamorphic rock that high temp & pressure have caused the minerals in granite to separate into light & dark bands. The light bands are quartz.
#MinCup26 #QuartzDeservesToWin
Gneiss is a metamorphic rock that high temp & pressure have caused the minerals in granite to separate into light & dark bands. The light bands are quartz.
#MinCup26 #QuartzDeservesToWin
🌍 Grand Canyon rocks preserve clues to Earth–Moon history from ~1.2 billion years ago. Sedimentary rhythms help reconstruct ancient orbital cycles, though interpretations are model-dependent. doi.org/10.1038/s415... #EarthScience #Education
Earth–Moon and Solar System history recorded in Mesoproterozoic Grand Canyon strata - Nature Geoscience
Cyclostratigraphic analysis of a ~1.2 billion-year-old rhythmically bedded mudstone formation in the Grand Canyon shows that the frequency and amplitude of Milanković cycles were markedly different th...
doi.org
September 21, 2026 at 11:28 AM
🌍 Grand Canyon rocks preserve clues to Earth–Moon history from ~1.2 billion years ago. Sedimentary rhythms help reconstruct ancient orbital cycles, though interpretations are model-dependent. doi.org/10.1038/s415... #EarthScience #Education
I’m here in the land of anorthite (the Mesoproterozoic Laramie anorthosite complex) so I guess I know who I’m pulling for.
Oooh, a bracket!
www.mineralcup.org/2026/bracket
www.mineralcup.org/2026/bracket
August 31, 2026 at 1:20 PM
I’m here in the land of anorthite (the Mesoproterozoic Laramie anorthosite complex) so I guess I know who I’m pulling for.
New in #GSABulletin: What do ancient volcanic ash layers reveal about the Mesoproterozoic evolution of Laurentia?
Isenburg et al. investigate the tectonic and volcanic processes that shaped the Picuris orogeny nearly 1.5 billion years ago: geosociety.co/Isenburg_et_al
Image: Fig. 11
Isenburg et al. investigate the tectonic and volcanic processes that shaped the Picuris orogeny nearly 1.5 billion years ago: geosociety.co/Isenburg_et_al
Image: Fig. 11
August 30, 2026 at 2:00 PM
New in #GSABulletin: What do ancient volcanic ash layers reveal about the Mesoproterozoic evolution of Laurentia?
Isenburg et al. investigate the tectonic and volcanic processes that shaped the Picuris orogeny nearly 1.5 billion years ago: geosociety.co/Isenburg_et_al
Image: Fig. 11
Isenburg et al. investigate the tectonic and volcanic processes that shaped the Picuris orogeny nearly 1.5 billion years ago: geosociety.co/Isenburg_et_al
Image: Fig. 11
Finally, this large piece of Belt Supergroup mudstone was right on the trail. My foot tramped on something created during the Mesoproterozoic 14.7 to 13.8 billion years ago, “a world of gigantic sheetflood alluvial aprons & shallow seas or lakes, for which there are no modern counterparts."
August 17, 2026 at 12:12 PM
Finally, this large piece of Belt Supergroup mudstone was right on the trail. My foot tramped on something created during the Mesoproterozoic 14.7 to 13.8 billion years ago, “a world of gigantic sheetflood alluvial aprons & shallow seas or lakes, for which there are no modern counterparts."
It started like 1.2Bya so mesoproterozoic
August 13, 2026 at 8:25 PM
It started like 1.2Bya so mesoproterozoic
One of the most-viewed PNAS articles in the last week is “The evolution of the Earth’s surface iron cycle.” Explore the article here: https://ow.ly/uzhl50ZztQ2
For more trending articles, visit https://ow.ly/4iGx50ZztQ1.
For more trending articles, visit https://ow.ly/4iGx50ZztQ1.
August 13, 2026 at 11:00 PM
One of the most-viewed PNAS articles in the last week is “The evolution of the Earth’s surface iron cycle.” Explore the article here: https://ow.ly/uzhl50ZztQ2
For more trending articles, visit https://ow.ly/4iGx50ZztQ1.
For more trending articles, visit https://ow.ly/4iGx50ZztQ1.
Calymmian (Geological periods 🌍)
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
Original post on mastodon.social
mastodon.social
August 9, 2026 at 7:53 AM
Calymmian (Geological periods 🌍)
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
This isn't an erratic. It (& many others that are similar) is lodged firmly within the Mesoproterozoic mafic intrusive complex.
August 6, 2026 at 10:59 PM
This isn't an erratic. It (& many others that are similar) is lodged firmly within the Mesoproterozoic mafic intrusive complex.
Basaltic dike (feeder dike for the Mesoproterozoic Mid-continent Rift LIP) cutting through Paleoproterozoic Animikie Group turbidites at Thomson Dam, Minnesota. ⚒️
August 6, 2026 at 8:09 PM
Basaltic dike (feeder dike for the Mesoproterozoic Mid-continent Rift LIP) cutting through Paleoproterozoic Animikie Group turbidites at Thomson Dam, Minnesota. ⚒️
You have the Great Unconformity in New York too, for instance on the flanks of the Adirondack massif. Not sure how well exposed it is, but there's a similar magnitude discrepancy between the ages of the Mesoproterozoic anorthosites there and the overlaying Cambrian sandstones. ⚒️
August 3, 2026 at 5:12 PM
You have the Great Unconformity in New York too, for instance on the flanks of the Adirondack massif. Not sure how well exposed it is, but there's a similar magnitude discrepancy between the ages of the Mesoproterozoic anorthosites there and the overlaying Cambrian sandstones. ⚒️
Windy day in the Pioneer Mountains of Montana. Good views and workout (and plants, see the Lewisia pygmaea photo) before my last week of teaching ecosystem science out here. Bonus rip-up clasts in quartzite of the Mesoproterozoic Missoula Group.
July 22, 2026 at 1:40 AM
Windy day in the Pioneer Mountains of Montana. Good views and workout (and plants, see the Lewisia pygmaea photo) before my last week of teaching ecosystem science out here. Bonus rip-up clasts in quartzite of the Mesoproterozoic Missoula Group.
Calymmian (Geological periods 🌍)
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
Original post on mastodon.social
mastodon.social
July 21, 2026 at 9:26 AM
Calymmian (Geological periods 🌍)
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
The Calymmian is the first geologic period in the Mesoproterozoic Era, lasting from 1600 to 1400 million years ago and spanning 200 million years. It follows the Statherian Period from the Paleoproterozoic Era, and precedes the Ectasian Period. Instead of being […]
‼️guessing approx location 48.7156231, -113.6205236? and a good number for mesoproterozoic = 1.3 billion years ago?
July 19, 2026 at 6:04 PM
‼️guessing approx location 48.7156231, -113.6205236? and a good number for mesoproterozoic = 1.3 billion years ago?
Amazing cover image, Dec 30 issue @pnas.org : #fluidinclusions in #1.4-billion-year-old #halite - repository of atmospheric oxygen and CO2 levels during the #Mesoproterozoic extracted by Justin Park et al.
In this issue: Tropical cyclone activity in the 17th century, vitamin C deficiency and protection from parasitic worms, and sand accumulation by rolling raindrops. In PNAS: https://ow.ly/7SJA50XQGkH
January 5, 2026 at 9:23 PM
Amazing cover image, Dec 30 issue @pnas.org : #fluidinclusions in #1.4-billion-year-old #halite - repository of atmospheric oxygen and CO2 levels during the #Mesoproterozoic extracted by Justin Park et al.
@KateShaw has made a new episode, featuring goblet-shaped Diskagma of the Paleoproterozoic, and Horodyskia of the Mesoproterozoic and Neoproterozoic.
https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/
#fossils
#precambrian
#proterozoic
#paleoproterozoic […]
https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/
#fossils
#precambrian
#proterozoic
#paleoproterozoic […]
Original post on sauropods.win
sauropods.win
August 4, 2025 at 11:58 AM
@KateShaw has made a new episode, featuring goblet-shaped Diskagma of the Paleoproterozoic, and Horodyskia of the Mesoproterozoic and Neoproterozoic.
https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/
#fossils
#precambrian
#proterozoic
#paleoproterozoic […]
https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/
#fossils
#precambrian
#proterozoic
#paleoproterozoic […]
Isabelle Price (SUNY Fredonia) researches the redox state in Mesoproterozoic orogenic lower crust with perspective from the Grenville Province, 13 IDE, Oct 2025.
November 17, 2025 at 4:02 PM
Isabelle Price (SUNY Fredonia) researches the redox state in Mesoproterozoic orogenic lower crust with perspective from the Grenville Province, 13 IDE, Oct 2025.
Wentao Cao and Isabelle Price (SUNY Fredonia) investigate the redox state in Mesoproterozoic orogenic lower crust: perspective from the Grenville Province, 13 IDE, Sept 2025.
October 2, 2025 at 1:59 PM
Wentao Cao and Isabelle Price (SUNY Fredonia) investigate the redox state in Mesoproterozoic orogenic lower crust: perspective from the Grenville Province, 13 IDE, Sept 2025.
After decades (!), there is finally a permanent nuclear waste storage site, in Finland.
Deep in Mesoproterozoic rocks (migmatite-gneiss for those who care ⚒️), hundreds of meters below ground, there is finally a safe resting place for these radioactive byproducts. 🧪
www.pbs.org/newshour/sci...
Deep in Mesoproterozoic rocks (migmatite-gneiss for those who care ⚒️), hundreds of meters below ground, there is finally a safe resting place for these radioactive byproducts. 🧪
www.pbs.org/newshour/sci...
This 1.9 billion-year-old bedrock will soon house the world's 1st permanent nuclear waste site
After decades of construction, the world's first facility for permanently disposing spent nuclear fuel is set to begin operations in Finland, becoming a final resting place for tons of dangerous radio...
www.pbs.org
April 13, 2026 at 2:01 PM
After decades (!), there is finally a permanent nuclear waste storage site, in Finland.
Deep in Mesoproterozoic rocks (migmatite-gneiss for those who care ⚒️), hundreds of meters below ground, there is finally a safe resting place for these radioactive byproducts. 🧪
www.pbs.org/newshour/sci...
Deep in Mesoproterozoic rocks (migmatite-gneiss for those who care ⚒️), hundreds of meters below ground, there is finally a safe resting place for these radioactive byproducts. 🧪
www.pbs.org/newshour/sci...
Mesoproterozoic, Paleoproterozoic, what's an era in either direction?
February 24, 2025 at 9:24 PM
Mesoproterozoic, Paleoproterozoic, what's an era in either direction?
That somehow doesn't make sense to me with the Faint Young Sun. If atmospheric carbon would be constant at the heating effect of the mesoproterozoic we would be cooking www.nature.com/articles/nat...
High CO2 levels in the Proterozoic atmosphere estimated from analyses of individual microfossils - Nature
Nature - High CO2 levels in the Proterozoic atmosphere estimated from analyses of individual microfossils
www.nature.com
October 4, 2024 at 4:50 PM
That somehow doesn't make sense to me with the Faint Young Sun. If atmospheric carbon would be constant at the heating effect of the mesoproterozoic we would be cooking www.nature.com/articles/nat...
Way back in Earth's history, low oxygen levels helped ancient structures called stromatolites thrive. In a specific region of China, these formations show diverse shapes and reveal how changes in oxygen and microbial life were linked. This study unveils essential clues about how early life evolve...
Stromatolites and pulsed oxygenation events in the Mesoproterozoic Longjiayuan formation of western Henan: evidence for life-environment co-evolution.
Published in Scientific reports
doi.org
July 30, 2025 at 1:00 PM
Way back in Earth's history, low oxygen levels helped ancient structures called stromatolites thrive. In a specific region of China, these formations show diverse shapes and reveal how changes in oxygen and microbial life were linked. This study unveils essential clues about how early life evolve...
Aerobic nitrogen cycling in a molybdenum-limited, redox-stratified Mesoproterozoic epeiric sea #stableisotopes www.sciencedirect.com/science/arti...
Aerobic nitrogen cycling in a molybdenum-limited, redox-stratified Mesoproterozoic epeiric sea
Nitrogen is a critically important element for life on Earth, and its cycling through the ocean-atmosphere system is a biologically mediated process t…
www.sciencedirect.com
May 5, 2025 at 1:38 PM
Aerobic nitrogen cycling in a molybdenum-limited, redox-stratified Mesoproterozoic epeiric sea #stableisotopes www.sciencedirect.com/science/arti...