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1000 results for “silicatefondue”
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#Zircon and #Perovskite are worthy adversaries. Congratulations!
Next year is the year of #sapphirine. Momentum is building -it received 100's of more votes than last year.
Go Blue! Go Sapphirine!
#MInCup23 #Granulite -
#Zircon and #Perovskite are worthy adversaries. Congratulations!
Next year is the year of #sapphirine. Momentum is building -it received 100's of more votes than last year.
Go Blue! Go Sapphirine!
#MInCup23 #Granulite -
#Zircon and #Perovskite are worthy adversaries. Congratulations!
Next year is the year of #sapphirine. Momentum is building -it received 100's of more votes than last year.
Go Blue! Go Sapphirine!
#MInCup23 #Granulite -
#Zircon and #Perovskite are worthy adversaries. Congratulations!
Next year is the year of #sapphirine. Momentum is building -it received 100's of more votes than last year.
Go Blue! Go Sapphirine!
#MInCup23 #Granulite -
#Zircon and #Perovskite are worthy adversaries. Congratulations!
Next year is the year of #sapphirine. Momentum is building -it received 100's of more votes than last year.
Go Blue! Go Sapphirine!
#MInCup23 #Granulite -
An amazing month of mineral facts, photos, and fun. The organizers of #MinCup23, @MineralCup have done an astounding job of keeping everything straight and maintaining the enthusiasm. Thank you!
Thanks also to www.MinDat.org for their support and resources.
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An amazing month of mineral facts, photos, and fun. The organizers of #MinCup23, @MineralCup have done an astounding job of keeping everything straight and maintaining the enthusiasm. Thank you!
Thanks also to www.MinDat.org for their support and resources.
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An amazing month of mineral facts, photos, and fun. The organizers of #MinCup23, @MineralCup have done an astounding job of keeping everything straight and maintaining the enthusiasm. Thank you!
Thanks also to www.MinDat.org for their support and resources.
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An amazing month of mineral facts, photos, and fun. The organizers of #MinCup23, @MineralCup have done an astounding job of keeping everything straight and maintaining the enthusiasm. Thank you!
Thanks also to www.MinDat.org for their support and resources.
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An amazing month of mineral facts, photos, and fun. The organizers of #MinCup23, @MineralCup have done an astounding job of keeping everything straight and maintaining the enthusiasm. Thank you!
Thanks also to www.MinDat.org for their support and resources.
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#UtrechtUniversity #EarthSystemScience #Geology
One more Friday early-career presenter at the #Goldschmidt2023 conference #Lyon:*Alissa J Kotowski* (Utrecht University)
Low-temperature plate boundary serpentinization post-dates subduction initiation and facilitates obduction of an Appalachian ophioliteSession 4fO2 09:30 CEST
Field work at Mont Albert, Gaspé Peninsula, #Quebec done while at #McGillUniversity. #Ordovician #TaconicOrogeny
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#McGillUniversity #EarthSystemScience #Geology
Friday's early-career presenters at the #Goldschmidt2023 conference #Lyon:*Matthew Tarling*
Deciphering the combined structural and mineralogical record of serpentinite fault rocks
Session 4fO2 09:15 CEST*Jillian Kendrick*
Field observations, petrography, geochemistry, and phase equilibrium modelling: The four pillars of petrological investigations of crustal differentiation
Session 4dO1 11:15 CEST -
#McGillUniversity #EarthSystemScience #Geology
Monday & Tuesday's early-career presenters at the #Goldschmidt2023 conference #Lyon (late notice):*Kathryn Rico* now at Arizona State U
Combining trace metal geochemistry and experimental microbiology to explore the role of dissimilatory Fe(III) reducing bacteria in precursor Banded Iron Formations*Maxwell Lechte*
Palaeoredox and environmental constraints on early eukaryote ecosystems: insights from the Greater McArthur Basin, northern Australia -
Repost from Adriana Guatame
(@adriguatame.bsky.social):
With #kyanite I always remember this video created by Stacey Phillips via the Mineralogical Society (the LEGO stop motion science videos) -
New Year's Eve sadness, part 2:
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The trail of color leading up to the #MinCup24 Grand Final...
#BlueMinerals #PinkMinerals #MineralsArrangedByColor #Minerals #Geology
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A mantle xenolith (dunite) infiltrated by mafic melt on the left side. The melt has crystallized clinopyroxene, as shown by this electron backscattered diffraction image. Each pixel's data is a diffraction pattern that can determine mineral type and crystallographic orientation.
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Katie Maloney spoke about the 950 million year old algae fossils from the Wernecke Mountains, Yukon Territory, Canada. She's reconstructing the biosphere and the spread of eukaryotes at a time before shells or any other hard parts evolved.
#McGillUniversity #EarthSystemScience #FossilFriday #Proterozoic #Yukon -
From Barb Dutrow, LSU:
...we announce the passing of a metamorphic petrology legend, Michael J. Holdaway on March 21, 2025, at 89 years.Mike is perhaps best known for his meticulous experiments on the Al2SiO5 system and for developing the andalusite weight loss method for determining reaction direction. At Southern Methodist University his work provided experimental constraints on the triple point of the polymorphs for the first time.
#Metamorphic #ExperimentalPetrology #Geoscience #Mineralogy -
#Neptunite is one of a few calcium-free titanium silicates (incl. benitoite). Seems like an obscure fact but:
#Zircon includes titanium in its structure, as a function of temperature; this can be a #geothermometer.
To standardize a microbeam analysis (like laser ablation ICPMS), we need a mineral with a known composition, lots of titanium and silica and no calcium, which has an isotope at mass 48. Neptunite and benitoite are perfect for this.
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#Neptunite is one of a few calcium-free titanium silicates (incl. benitoite). Seems like an obscure fact but:
#Zircon includes titanium in its structure, as a function of temperature; this can be a #geothermometer.
To standardize a microbeam analysis (like laser ablation ICPMS), we need a mineral with a known composition, lots of titanium and silica and no calcium, which has an isotope at mass 48. Neptunite and benitoite are perfect for this.
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#Neptunite is one of a few calcium-free titanium silicates (incl. benitoite). Seems like an obscure fact but:
#Zircon includes titanium in its structure, as a function of temperature; this can be a #geothermometer.
To standardize a microbeam analysis (like laser ablation ICPMS), we need a mineral with a known composition, lots of titanium and silica and no calcium, which has an isotope at mass 48. Neptunite and benitoite are perfect for this.
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#Neptunite is one of a few calcium-free titanium silicates (incl. benitoite). Seems like an obscure fact but:
#Zircon includes titanium in its structure, as a function of temperature; this can be a #geothermometer.
To standardize a microbeam analysis (like laser ablation ICPMS), we need a mineral with a known composition, lots of titanium and silica and no calcium, which has an isotope at mass 48. Neptunite and benitoite are perfect for this.
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A well-illustrated and -paced talk yesterday by Dr. Stephan Kolzenburg of the University of Buffalo. Even the biologists in back commented that they understood why rocks sometimes break and other times flow.
#UBuffalo #McGillUniversity #StructuralGeology #BrittleDuctileTransition
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‘We’re All Asgardians’ a talk on the origins of Eukaryotes (us) with implications for our present-day immune systems by Brett Baker, University of Texas, Austin. Dr. Baker inaugurated the EPS Wares Distinguished Public Lecture series.
Eukaryotic cells are most closely related to the 'Hod' branch of the Asgard branch of the Archaea.
#Eukaryote #Archaea #Evolution #UTAustin #McGillIUniversity #EarthSystemScience #WaresLecture
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The National Research Council of Canada is making great advances in linking laboratory measurements to satellite measurements by using hyperspectral sensors on uncrewed aerial platforms. Dr. Pablo Arroyo presented some of their research today characterizing wetland vegetation and water levels.
#NationalResearchCouncil #Ottawa #McGillUniversity #Drones #HyperspectralImage #WetlandEcosystems #Wetland #EarthSystemScience
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Early career presenters at AGU Wednesday:
William Fajzel
Constraining the role of human economic activity across the Great Acceleration
(Eric Galbraith's group)
Wednesday morning posters, GC31W-0138Robert Bogue
Ground Truthing a Novel Remote Sensing Method for Satellite Detection of Volcanic CO2 Emissions Using Tree Ring Isotopic Data
(John Stix and Peter Douglas' groups)
Wednesday afternoon posters, V33B-3099#AGU24 #McGillUniversity #EarthSystemScience #Volcano #CarbonDioxide #CO2
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A list of persons interested in Earth Science on Mastodon:
https://all-geo.org/mastodon-earthsci/
Select who you're interested in, click to create a .csv file, and upload to your Mastodon account to follow. Maintained by @allochthonous -
An amazing talk by Max Lloyd of Penn State University. He used clumped isotopes to separate the effects of CO2 abundance, water availability, and temperature on plant stress. The plot shows the clumped signal in lignin from recent trees but he has analyzed samples from the last glacial maximum. An implication is that even in a high-CO2 world, water and heat stress reduce the ability of plants to produce biomass.
https://doi.org/10.1073/pnas.2306736120
#PSU #McGillUniversity #Photosynthesis #EarthSystemScience -
@FaithfullJohn I've the first edition (published 1980) that was the textbook for learning igneous petrology back sometime in the 1980's...
#IgneousPetrology #PhaseDiagrams #Basalts #ExperimentalPetrology