Geology Wiki
Don't have an account?
Register
Geology Wiki
Register
in: Blog posts

Internal structure of Earth

Granpa
Granpa • 15 May 2019 • User blog:Granpa
Mineral assemblages of common igneous rocks and their relation to the interior structure of the Earth
  Type Structure Density Bowen's series Type Water Ocean   1.0 1.0 0 0.0606   6371 0 3.688   1.0
  Pelagic Amorphous Silica
(SiO2) 		Diatomite Chert
  Calcareous 2.7/2.95
2.85 		Calcite/Aragonite
Dolomite 		Limestone
Dolostone 		Karst Marble
Tremolite
Diopside 		Calc–silicate Hornfel Skarn 2.3 - 2.7 - 0.000023 0.0023 6371 0 0.1
  Evaporite Gypsum
(CaSO4)
  Evaporite Halite
(NaCl)
Organic Organic matter Peat (1)Oil
(1)Natural gas
(1)Lignite
(1)Bituminous coal
(2)Anthracite
(4)Graphite
Clastic Quartz Sand Sandstone
Quartz arenite
Quartzite
  Argillaceous Tectosilicates 2.65 Quartz Quartz
(SiO2) 		↘ Granodiorite(>20%)
(Dacite)
 KREEP Continental Crust (0)Mudstone
(0)Argillite (Pelite)
(1)Shale
(2)Slate
(2)Phyllite
(3)Schist
(4)Gneiss (banded)
(4)Migmatite
(4)Granite (>20%)
 (Rhyolite) 		biotite hornfel Greisen 2.7 2.7 0.0033 0.3369 6371 0 36 1.0
  Phyllosilicates 2.8 Muscovite White Mica
(OH)
  Felsic Tectosilicates 2.75 Orthoclase(K)
 Microcline

Anorthoclase 		Alkali feldspar
(Al) 		↗
  → Syenite(<5%)
 (trachyte)
Nepheline syenite
 Phonolite
Nepheline 		Quartz Syenite (>5%) Sanidine
  Plagioclase
Albite(Na)
 → Monzonite (<5%)
(Latite)
 Adamellite (>5%) High Albite
 
Oligoclase
Andesine
 Feldspar
(Al) 		→ Diorite (<5%)
(Andesite)
 Quartz diorite (>5%)
Trondhjemite
Tonalite (>20%) 		2.8-3.0
 
Labradorite
Bytownite
Anorthite(Ca)
 → Anorthosite Anorthosite
↘ Gabbro
(Basalt)
 Norite
Troctolite 		Upper Mantle (3)Blueschist
(4)Eclogite 		(1)Greenstone
(2)Greenschist
(3)Amphibolite
(4)Granulite 		Hornfel Norite
Troctolite 		2.95 3.05 0.152 13.82 6367.3 3.688 662.3
  Mafic Phyllosilicates 2.7–3.3 Biotite Black Mica
(Mg, Fe, OH)
  Inosilicates
(Double chain)
 3.35 Monoclinic
Hornblende
(K-Ca-Na)

Orthorhombic

Amphibole
(Mg-Fe-OH)
  Inosilicates
(Single chain)
 3.35 Clinopyroxene
Jadeite(Na)
Augite(Ca)

Orthopyroxene

Ferrosilite(Fe)
Enstatite(Mg)
 Pyroxene
(Al) 		↗
→ Pyroxenite
  ↘  
Peridotite
(Komatiite)
 Lower Mantle Serpentine
Tremolite/Talc
Peridotite 		3.55 3.65 0.3581 26.67 5705 666 2127 1.05582
  Ultramafic Orthosilicates
(Nesosilicates)
(Isosilicates)
 3.65
(70/30) 		Fayalite(Fe) Olivine ↗
  Forsterite(Mg) ↘ Dunite D" Layer Serpentinite 3.65 3.75 0.0096 0.697 3578 2793 98
 

Bridgmanite
(SiO3)

 
  Spinel
Ferropericlase
Ilmenite 		  Iron Outer Core 6.3 6.5 0.184 7.69 3480 2891 2260 1.60631
  Density of moon = 3.346 g/cm3  
  Average density of uncompressed mantle = 3.34668620323
 (3*13.82 + 3.65*26.67)/(13.82*3/2.95+26.67*3.65/3.55)
Average density of continental crust + uncompressed d" Layer = 3.346053
 (2.7*0.3369+3.75*0.697)/(0.3369+0.697*3.75/3.65)
Pressure at center of moon ≈ 50,000 bar.
Transition zone begins at 124,643 bar
 3.0 g/cm3 * 1 g's * 410 km in bar
Mass of continental crust + d" Layer = 1.055 Moon masses
Mass of continental crust + d" Layer + Ocean = 1.073 Moon masses
 Mass of Theia?
Olivine = Hexagonal, close-packed array of oxygen ions.
half of the octahedral sites are occupied with magnesium or iron ions.
one-eighth of the tetrahedral sites are occupied by silicon ions.

Silica is amorphous because its a geopolymer.

Iron Inner core 231.85 231.85 0.2953 0.3462 1220 5151 1220
 
uranium 10^17 kg 3?
 
Ions
Huge O, K
Large Na, Ca
Medium Fe++, Mg
Small Al, Fe+++, C
Franciscan
(Pressure) 		Barrovian
(Heat&Pressure) 		Buchan
(Heat) 		Metasomatism Density Mass Volume Radius Depth Width Gravity
(1)Zeolite
(2)PP
(3)Blueschist
(4)Eclogite 		(1)Zeolite
(2)Greenschist
(3)Amphibolite
(4)Granulite 		(1)Zeolite
(2)Albite-epidote-Horn
(3)Hornblende-Horn
(4)Pyroxene-Horn
(5)Sanidinite 		  1st density is at the surface. 2nd is at depth.
Volume of Moon = 1
Density of liquid iron = 6.3 g/cm3 at 6000 C
Density of solid iron (fcc) = 8.6 g/cm3
Density of Inner core = 8.587 * 27 = 231.85

Meneral assemblages[]

Mineral assemblages
slate Zeolite facies: illite/phengite + chlorite + quartz
(kaolinite, paragonite)
 Zeolite facies: illite/phengite + chlorite + quartz
(kaolinite, paragonite)
Prehnite-pumpellyite facies: phengite + chlorite + quartz
(pyrophyllite, paragonite, alkali feldspar, stilpnomelane, lawsonite)
 Greenschist facies: muscovite + chlorite + quartz
(biotite, alkali feldspar, chloritoid, paragonite, albite, spessartine)
Blueschist facies: phengite + chlorite + quartz
(albite, jadeite, lawsonite, garnet, chloritoid, paragonite)
 Amphibolite facies: muscovite + biotite + quartz
(garnet, staurolite, kyanite, sillimanite, andalusite, cordierite, chlorite, plagioclase, alkali feldspar)
Eclogite facies: phengite + garnet + quartz Granulite facies: alkali feldspar + plagioclase + sillimanite + quartz
(biotite, garnet, kyanite, cordierite, orthopyroxene, spinel, corundum, sapphirine)
 
Mafic Zeolite facies: zeolite + chlorite + albite + quartz
(prehnite, analcime, pumpellyite)
 Zeolite facies: zeolite + chlorite + albite + quartz
(prehnite, analcime, pumpellyite)
Prehnite-pumpellyite facies: prehnite + pumpellyite + chlorite + albite + quartz
(actinolite, stilpnomelane, lawsonite)
 Greenschist facies: chlorite + epidote + albite
(actinolite, biotite)
Blueschist facies: glaucophane/crossite + lawsonite/epidote
(pumpellyite, chlorite, garnet, albite, aragonite, phengite, chloritoid, paragonite)
 Amphibolite facies: plagioclase + hornblende
(epidote, garnet, orthoamphibole, cummingtonite)
Eclogite facies: omphacite + garnet + rutile Granulite facies: orthopyroxene + plagioclase
(clinopyroxene, hornblende, garnet)
 
Ultramafic Zeolite facies: lizardite/chrysotile + brucite + magnetite
(chlorite, carbonate)
 Zeolite facies: lizardite/chrysotile + brucite + magnetite
(chlorite, carbonate)
Prehnite-pumpellyite facies: lizardite/chrysotile + brucite + magnetite
(antigorite, chlorite, carbonate, talc, diopside)
 Greenschist facies: antigorite + diopside + magnetite
(chlorite, brucite, olivine, talc, carbonate)
Blueschist facies: antigorite + olivine + magnetite
(chlorite, brucite, talc, diopside)
 Amphibolite facies: olivine + tremolite
(antigorite, talc, anthopyllite, cummingtonite, enstatite)
Eclogite facies: olivine Granulite facies: olivine + diopside + enstatite
(spinel, plagioclase)

Links[]

purge

Community content is available under CC-BY-SA unless otherwise noted.