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1000 results for “silicatefondue”
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When there is wind over water, the water's direction is normal to that of the wind. Whether it goes left or right is decided by the side of the mother ball we are on. Since the mother ball turns, the water closest to the middle goes the fastest. So when wind carries water further away from the middle, the water keeps its force, and that's why it doesn't move in the same direction as the wind. Continued....
[A. B.-K.]
[1/2]
#Ekman #UpGoer5 #McGillUniversity #SimpleWords -
Did you know that floors can move and dance? You can see it if you give it a chance. There are three ways the floor can move. The first is when two floors move close together. The second way the floor can move is when one floor is moving left and the other floor is moving right. This little dance can make points with hot red coming out. The final move a floor can do is rub close and shake, making a little dance for me, and you! [C.M.]
#plateTectonics #upgoer5 #McGillUniversity #simpleWords -
I asked my students to explain an Earth System Science concept using only the ten hundred most common English words. Inspired by a toot by Andy @revkin and enabled by Theo Sanderson's online editor: https://splasho.com/upgoer5/
There were some amazingly creative creations!
#upgoer5 #simplewords #Earth SystemScience -
#zircon is useful for fission-track cooling ages too -its closure temperature is ~220°C (the temperature when the fission tracks are annealed away). John Garver's group at Union college (@geo_garver) used ziron fission tracks to show that the same Adirondack rocks have been cooling since the late-Precambrian/Cambrian rifting of Rodinia.
#MinCup23 #zircon #Adirondack #UnionCollege -
Congratulations to Dr. Keavin Moore, who successfully defended his PhD thesis, "Coupled Models of Water on Terrestrial Planets Orbiting M-Dwarfs"
(supervised by Nic Cowan)Keavin's models predict that water dissolved in a magma ocean, combined with recycling hydrated crust back into the mantle, can both limit water loss during the early active phase of a red dwarf star.
#McGIllUniversity #Exoplanets #MagmaOcean #Atmosphere #WaterWorld #RedDwarf
#TerrestrialWater -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
I've seen sphene! (Sounds better than "the rock is tight with titanite")
Centimeter-size black sphene (titanite) with apatite (dark brown) and orthoclase feldspar (light brown). Folding pocket knife for scale.
From the Bancroft locality in Ontario, Canada. Grenville-aged (~1.2± billion years)
#MinCup24 #Titanite #Sphene #Bancroft #Ontario #Geology -
Vivianite! Phosphate bones plus dissolved iron equals blue #Vivianite.
https://www.alaskasnewssource.com/2023/10/28/rare-blue-tusked-mammoth-auction-anchorage/
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Congratulations to Shaunna Morrison (Earth & Planets Laboratory, Carnegie Science), the recipient of the 2023 Mineralogical Society of America award. The award was presented at the #GSAConnects meeting.
She studies crystal chemical behavior and bonding systematics in minerals, is part of the #MarsCuriosity science team and is a pioneer in #MineralInformatics.
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Congratulations to Shaunna Morrison (Earth & Planets Laboratory, Carnegie Science), the recipient of the 2023 Mineralogical Society of America award. The award was presented at the #GSAConnects meeting.
She studies crystal chemical behavior and bonding systematics in minerals, is part of the #MarsCuriosity science team and is a pioneer in #MineralInformatics.
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Congratulations to Shaunna Morrison (Earth & Planets Laboratory, Carnegie Science), the recipient of the 2023 Mineralogical Society of America award. The award was presented at the #GSAConnects meeting.
She studies crystal chemical behavior and bonding systematics in minerals, is part of the #MarsCuriosity science team and is a pioneer in #MineralInformatics.
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Congratulations to Shaunna Morrison (Earth & Planets Laboratory, Carnegie Science), the recipient of the 2023 Mineralogical Society of America award. The award was presented at the #GSAConnects meeting.
She studies crystal chemical behavior and bonding systematics in minerals, is part of the #MarsCuriosity science team and is a pioneer in #MineralInformatics.
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At high pressures, fluorine-free topaz is stable: Topaz-OH. It's likely present only on recent Earth in our solar system: water, aluminous sediments (shales; pelites) from continental crust and cold subduction zones are all required.
Given these, Topaz-OH can potentially transport water into the mantle transition zone (where it's stored in #ringwoodite ) Figure from Huang et al (2020).
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At high pressures, fluorine-free topaz is stable: Topaz-OH. It's likely present only on recent Earth in our solar system: water, aluminous sediments (shales; pelites) from continental crust and cold subduction zones are all required.
Given these, Topaz-OH can potentially transport water into the mantle transition zone (where it's stored in #ringwoodite ) Figure from Huang et al (2020).
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At high pressures, fluorine-free topaz is stable: Topaz-OH. It's likely present only on recent Earth in our solar system: water, aluminous sediments (shales; pelites) from continental crust and cold subduction zones are all required.
Given these, Topaz-OH can potentially transport water into the mantle transition zone (where it's stored in #ringwoodite ) Figure from Huang et al (2020).
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At high pressures, fluorine-free topaz is stable: Topaz-OH. It's likely present only on recent Earth in our solar system: water, aluminous sediments (shales; pelites) from continental crust and cold subduction zones are all required.
Given these, Topaz-OH can potentially transport water into the mantle transition zone (where it's stored in #ringwoodite ) Figure from Huang et al (2020).
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Why study and synthesize #Ringwoodite? Experiments (below, a diamond anvil pressure device that's transparent to visible light; Schmandt et al, 2014) and natural samples from the Earth's mantle (see ksircombe's posts: https://aus.social/@ksircombe/113124213223248687) suggest that there's an ocean or two worth of water stored in Earth's Ringwoodite. It's likely kept the planet habitable for the last 4.5 billion years.
Plus Ringwoodite is more Blue than #Kyanite !
#MinCup24 #Mantle #PlateTectonics #BlueMinerals -
Why study and synthesize #Ringwoodite? Experiments (below, a diamond anvil pressure device that's transparent to visible light; Schmandt et al, 2014) and natural samples from the Earth's mantle (see ksircombe's posts: https://aus.social/@ksircombe/113124213223248687) suggest that there's an ocean or two worth of water stored in Earth's Ringwoodite. It's likely kept the planet habitable for the last 4.5 billion years.
Plus Ringwoodite is more Blue than #Kyanite !
#MinCup24 #Mantle #PlateTectonics #BlueMinerals -
Why study and synthesize #Ringwoodite? Experiments (below, a diamond anvil pressure device that's transparent to visible light; Schmandt et al, 2014) and natural samples from the Earth's mantle (see ksircombe's posts: https://aus.social/@ksircombe/113124213223248687) suggest that there's an ocean or two worth of water stored in Earth's Ringwoodite. It's likely kept the planet habitable for the last 4.5 billion years.
Plus Ringwoodite is more Blue than #Kyanite !
#MinCup24 #Mantle #PlateTectonics #BlueMinerals -
Why study and synthesize #Ringwoodite? Experiments (below, a diamond anvil pressure device that's transparent to visible light; Schmandt et al, 2014) and natural samples from the Earth's mantle (see ksircombe's posts: https://aus.social/@ksircombe/113124213223248687) suggest that there's an ocean or two worth of water stored in Earth's Ringwoodite. It's likely kept the planet habitable for the last 4.5 billion years.
Plus Ringwoodite is more Blue than #Kyanite !
#MinCup24 #Mantle #PlateTectonics #BlueMinerals -
Why study and synthesize #Ringwoodite? Experiments (below, a diamond anvil pressure device that's transparent to visible light; Schmandt et al, 2014) and natural samples from the Earth's mantle (see ksircombe's posts: https://aus.social/@ksircombe/113124213223248687) suggest that there's an ocean or two worth of water stored in Earth's Ringwoodite. It's likely kept the planet habitable for the last 4.5 billion years.
Plus Ringwoodite is more Blue than #Kyanite !
#MinCup24 #Mantle #PlateTectonics #BlueMinerals -
We can make #Ringwoodite but measuring the pressure is hard. Yingwei Fei (CIW, Fei et al, 2004) pioneered combining the experiment with simple cubic crystals with well known volume changes with pressure. The volume of these cubic crystals is measured with synchrotron x-rays at the same time as the Ringwoodite is forming.
#MinCup24 #Synchrotron #Mantle -
We can make #Ringwoodite but measuring the pressure is hard. Yingwei Fei (CIW, Fei et al, 2004) pioneered combining the experiment with simple cubic crystals with well known volume changes with pressure. The volume of these cubic crystals is measured with synchrotron x-rays at the same time as the Ringwoodite is forming.
#MinCup24 #Synchrotron #Mantle -
We can make #Ringwoodite but measuring the pressure is hard. Yingwei Fei (CIW, Fei et al, 2004) pioneered combining the experiment with simple cubic crystals with well known volume changes with pressure. The volume of these cubic crystals is measured with synchrotron x-rays at the same time as the Ringwoodite is forming.
#MinCup24 #Synchrotron #Mantle -
We can make #Ringwoodite but measuring the pressure is hard. Yingwei Fei (CIW, Fei et al, 2004) pioneered combining the experiment with simple cubic crystals with well known volume changes with pressure. The volume of these cubic crystals is measured with synchrotron x-rays at the same time as the Ringwoodite is forming.
#MinCup24 #Synchrotron #Mantle -
We can make #Ringwoodite but measuring the pressure is hard. Yingwei Fei (CIW, Fei et al, 2004) pioneered combining the experiment with simple cubic crystals with well known volume changes with pressure. The volume of these cubic crystals is measured with synchrotron x-rays at the same time as the Ringwoodite is forming.
#MinCup24 #Synchrotron #Mantle -
The Earth has a tremendous amount of #Ringwoodite, it's just difficult to get it to the surface unless encapsulated within another mineral. Making Ringwoodite big enough to see just requires a big press!
This is a 1500 ton press located at #Spring-8 in #Japan. It's bigger than it needs to be because it has a small gap in the WC anvils that allow synchrotron x-rays (intense, narrow beam) to penetrate the experiment, and because it's on actuators that position it to the micron.
#MinCup24 #Mantle -
The Earth has a tremendous amount of #Ringwoodite, it's just difficult to get it to the surface unless encapsulated within another mineral. Making Ringwoodite big enough to see just requires a big press!
This is a 1500 ton press located at #Spring-8 in #Japan. It's bigger than it needs to be because it has a small gap in the WC anvils that allow synchrotron x-rays (intense, narrow beam) to penetrate the experiment, and because it's on actuators that position it to the micron.
#MinCup24 #Mantle