On rocks, from Mineral Cup’s admin, @mikamckinnon
She writes:
#Hematite is a key mineral in banded iron formations. And BIFs are my BFFs
Very well done! BIFs make their appearance around minute five.
https://www.ted.com/talks/mika_mckinnon_do_you_have_a_rock
Thanks for the heads up
@vickyveritas
@vickyveritas.bsky.social
#MinCup25 #BandedIronFormation #GreatOxidationEvent #Stromatolites #EarthHistory #EarthSystemScience
Today, molybdenum is one of the most common trace elements in the ocean due to oxidative weathering of #Molybdenite. But in the Archean the oceans were reducing, and molybdenum was scarce.
Other nitrogenases evolved to use other transition elements, but Mo-nitrogenase was first, and best.
Molybdenite enables the Earth's biosphere!
#MinCup25 #NitrogenFixation #Nitrogenase #Archean #GreatOxidationEvent #OreCup #OreCup25
👉Man & machine occupy the same #EcologicalNiche👈
(2/n)
... species that has so far globally deprived itself of the basis for its life:
#Cyanobacteria in the #GreatOxidationEvent...
3-Apr-2025
#MolecularClock analysis shows #bacteria used #oxygen long before widespread photosynthesis
Scientists use the #GreatOxidationEvent and how organisms adapted to it to map bacterial #evolution
https://www.eurekalert.org/news-releases/1078069 #science #astrobiology
In a new study published in Science, researchers from the Model-Based Evolutionary Genomics Unit at the Okinawa Institute of Science and Technology (OIST) and their international collaborators have constructed a detailed timeline for bacterial evolution and oxygen adaptation. Their findings suggest some bacteria could use trace oxygen long before evolving the ability to produce it through photosynthesis.
#Treibhausgase #GlobaleErwärmung
#Wissenschaftskommunikation
(7/n)
...arbeite ich gerne mit dem #GreatOxidationEvent (dt.: #GroßeSauerstoffkatastrophe, #GOE) der #CyanoBakterien.1)/--Die haben den Sauerstoff auch nie wieder aus der Atmosphäre entfernen können. :(
Mann müsste vermutlich einen Zeichentrickfilm à la "Es war einmal...der Mensch" kreieren um die "Massen überhaupt erreichen zu können.
s/: Von wegen "Schwarm-Intelligenz"--...
There is nothing so special about this time, seen from the perspective of an immortal. Anything has happened before. Earth doesn't need us.
The only new thing us that humans, in contrast to the #cyanobacteria of the #GreatOxidationEvent, were conscious:
[Now public repost]
#ClimateCatastrophe
#ExtinctionLevelEvent
Yes, the only other species known to me to have ever been so stupid as to have destroyed their whole biosphere on a global level, are #cyanobacteria in the #GreatOxidationEvent in the #Paleoproterozoic Era.
2.4 billion years and #humanity collectively has an #IQ of these ancient bacteria.
Maybe, it deserves to become extinct?
Cheers!
Watch:
https://documentaryuniverse.com/how-bad-was-the-great-oxidation-event/
https://en.wikipedia.org/wiki/Great_Oxidation_Event
Image source:
https://documentaryuniverse.com/wp-content/uploads/2023/07/maxresdefault-778.jpg
Spannend. Weshalb führt ein hermetisch abgeschlossenes System nicht zu einem Überangebot an Sauerstoff wie seinerzeit bei den Cyano-Bakterien im #GreatOxidationEvent?
Vielleicht eine blöde Frage, aber Biounterricht ist lange her...
Dr Erica Barlow picked up a rock by chance 10 years ago. It might hold the oldest form of complex life on Earth https://news.unsw.edu.au/en/erica-picked-up-a-rock-10-years-ago-it-might-hold-the-oldest-form-of-complex-life-on-earth
Distinctive #microfossil supports early #Paleoproterozoic rise in complex cellular organisation https://onlinelibrary.wiley.com/doi/10.1111/gbi.12576
"the age estimate coincides with the #GreatOxidationEvent... The sharp rise of oxygen has been linked to the development of complex life on Earth, but we haven’t had the fossil record to demonstrate this – until now."
Onset of coupled atmosphere–ocean oxygenation 2.3 billion years ago
#GreatOxidationEvent #GOE #science
Bill Minarik
HistoPol (#HP) 🏴 🇺🇸 🏴
michael
Lukas VFN 🇪🇺
Brian Wade