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EGU TS
EGU TS
@ts.egu.eu
2 months ago
Post image

#ecsmonday

#Density or #viscosity – which matters more? Desiderio et al. (UK/CH) systematically vary recycled oceanic crust properties to understand #primordial material preservation in Earth's #lowermantle:

doi.org/10.5194/se-17-55-2026

#geodynamics #parameterstudy #mantleheterogeneity

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Bill Minarik
Bill Minarik
@silicatefondue.fosstodon.org.ap.brid.gy
6 months ago
An image of the globe of the Earth (from NASA), a sphere representing the volume of perovskite-structured minerals within the Earth (large), and a sphere representing the volume of stibnite in the Earth (a tiny dot).

An image of the globe of the Earth (from NASA), a sphere representing the volume of perovskite-structured minerals within the Earth (large), and a sphere representing the volume of stibnite in the Earth (a tiny dot).

Repost: A comparison of volumes occupied within the Earth.

Case closed.

#MinCup25 #Perovskite #Stibnite #LowerMantle #Bridgmanite

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@ivojuri.bsky.social
@ivojuri.bsky.social
@ivojuri.bsky.social
1 year ago
https://university.pressbooks.pub/geology/part/chapter-9-earths-interior/

https://university.pressbooks.pub/geology/part/chapter-9-earths-interior/

Figure 9.0.2 Earth’s layers: crust is pink, mantle is green, core is blue. Figure 9.0.2 image description: Layers of the earth

Figure 9.0.2 Earth’s layers: crust is pink, mantle is green, core is blue. Figure 9.0.2 image description: Layers of the earth

Figure 9.1.4 P wave (red) and S wave (blue) velocity variations with depth in Earth. The diagram on the right shows an expanded view of the upper 660 kilometres of the curves in the diagram on the left.

Figure 9.1.4 P wave (red) and S wave (blue) velocity variations with depth in Earth. The diagram on the right shows an expanded view of the upper 660 kilometres of the curves in the diagram on the left.

Figure 9.2.1 Right: generalized rate of temperature increase with depth within Earth. Temperature increases to the right, so the flatter the line, the steeper the temperature gradient. Our understanding of the temperature gradient comes from seismic wave information and knowledge of the melting points of Earth’s materials. Left: Rate of temperature increase with depth in Earth’s upper 500 kilometres, compared with the dry mantle rock melting curve (red dashed line). LVZ= low-velocity zone.

Figure 9.2.1 Right: generalized rate of temperature increase with depth within Earth. Temperature increases to the right, so the flatter the line, the steeper the temperature gradient. Our understanding of the temperature gradient comes from seismic wave information and knowledge of the melting points of Earth’s materials. Left: Rate of temperature increase with depth in Earth’s upper 500 kilometres, compared with the dry mantle rock melting curve (red dashed line). LVZ= low-velocity zone.

Unveiling Earth's hidden layers! 🌍🔎 This study dives into the Earth's interior, exploring its structure and composition through the lens of physical geology. 📉 Discover what lies beneath our feet! 🌐🧭

#Geology #EarthsInterior #InnerSolidCore #OuterLiquidCore #DLayer #LowerMantle #UpperMantle

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Bill Minarik
Bill Minarik
@silicatefondue.fosstodon.org.ap.brid.gy
1 year ago
An image of the globe of the Earth (from NASA), a sphere representing the volume of perovskite-structured minerals in the Earth (large), and a sphere representing the volume of stibnite in the Earth (a tiny dot).

An image of the globe of the Earth (from NASA), a sphere representing the volume of perovskite-structured minerals in the Earth (large), and a sphere representing the volume of stibnite in the Earth (a tiny dot).

A comparison of volumes occupied within the Earth.

Case closed.

#MinCup24 #Perovskite #Stibnite #LowerMantle #Earth #MineralPhysics

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