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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 -
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 -
#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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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 -
@geologymull An excellent photo of basaltic quench glass (tachylite). I've not seen tachylite in person... It does look like the rock is leaking tar.
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An ad for a new Quebec sitcom that takes place in a skating rink.
Colorful characters mean hijinks ensue.
Picture taken at a hockey arena.
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Not only was #ammineite recently discovered, it's only been present for a short part of Earth history; it needs copper and guano in dry areas.
Base figure from John et al. (2010) Porphyry Copper Deposit Model, USGS SIR. Ammineite photo by Germano Fretti hosted on MinDat.org
Inspired by @llewelly
#Mincup24 #MinCup #EarthSystemScience #copper #bats #lizards
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Joshua Davies spoke today on linking the Central Atlantic magmatic province (CAMP) with the end of the Triassic extinction. Isotopes and trace elements suggest that it wasn't the lava directly but the cooked carbon-rich sediments that did the damage.
#UQAM #GEOTOP #McGillUniversity #Extinction #Magma #ClimateChange #EarthSystemScience #GeoScience -
Le réseau est complet !
48 géophones collectent des données, enregistrant le pouls de la ville et les tremblements agités de la planète.#Montreal #Seismology #UrbanSeismology #CItizenScience #GEOTOP #McGillUniversity
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The deployment is complete!
48 geophones are collecting data, recording the pulse of the city and the restless trembles of the planet.
#Montreal #Seismology #UrbanSeismology #CItizenScience #McGillUniversity #GEOTOP -
Intéressé par l'installation d'un sismomètre dans votre jardin?
joindre le réseau de surveillance des tremblements de terre de Montréal!
Recherche jusqu'à 48 sites pour un déploiement en décembre 2023!Complétez:
https://docs.google.com/forms/d/e/1FAIpQLSeXQd0QJcR4QH9lNYGYaDt5eIjLes9ibm74-Uzx8ZbEqa7Z5A/viewformYajing Liu, McGill University
ou
Fiona Darbyshire, University of Québec at Montréal#montreal #quebec #McGillUniversity #UQAM #GEOTOP #sismologie