Mineralogy and Petrology Study rocks and minerals Do geological field work A Little Bit About Me …...
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![Page 1: Mineralogy and Petrology Study rocks and minerals Do geological field work A Little Bit About Me … Professor Bob Dymek.](https://reader036.fdocuments.in/reader036/viewer/2022062805/5697bfbb1a28abf838ca0fae/html5/thumbnails/1.jpg)
• Mineralogy and Petrology
• Study rocks and minerals
• Do geological field work
A Little Bit About Me …
Professor Bob Dymek
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Central Kansas
SE Missouri Virginia
Adirondacks
Labrador
NW Territories
Québec
West Greenland
Where Have I Done Field Work ???
World’s Oldest Rocks
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3.8 billion-year-old Metamorphic Rocks at Isua, West Greenland
The rocks on the left are older thanmost of the dark lavas that fill the
Mare Basins on the moon !
![Page 4: Mineralogy and Petrology Study rocks and minerals Do geological field work A Little Bit About Me … Professor Bob Dymek.](https://reader036.fdocuments.in/reader036/viewer/2022062805/5697bfbb1a28abf838ca0fae/html5/thumbnails/4.jpg)
EPSc118 “Geology of National Parks”
EPSc201 “Earth & the Environment”
EPSc437 “Igneous & Metamorphic
Petrology”
EPSc542 “Chemical Petrology”
For 12 years, I was the Senior Editor for this research journal
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“Secular Magmagenesis”
4.55-3.8 Ga Hadean ???
3.8-2.5 Ga Archaean• Granite-Greenstone Belts• Komatiites• Tonalite-Trondjhemite-Granodiorite (TTG) Suite
<0.6 Ga Phanerozoic• Magmatic arcs • Calc-alkaline (CA) batholiths
Earth History and Igneous Petrology
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Archaean TTG suites:Direct Slab Melting
Phanerozoic CA Suites:Melting of Mantle Wedge
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Secular Magmagenesis – Earth History and Igneous Petrology
4.55-3.8 Ga Hadean ???
3.8-2.5 Ga Archaean• Granite-Greenstone Belts• Komatiites• Tonalite-Trondjhemite-Granodiorite (TTG) Suite
2.5-0.6 Ga Proterozoic• Massif Anorthosites (~1.0-2.1)• Jotunite-Mangerite (AJM) Suite
<0.6 Ga Phanerozoic• Magmatic arcs • Calc-alkaline batholiths
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• Rocks consisting mostly of intermediate plagioclase feldspar (An40-60)
• Plutons ranging from ~10 to >1,000 km2
• Associated cogenetic/comagmatic plutons Jotunite – mafic to intermediate, green, opx-bearing monzodiorite Mangerite – intermediate to felsic, green, opx-bearing granodiorite
• Elongate “belts” across Laurentia and Gondwana
• Continental rifts, continent-continent collision, continental margin arcs
• Approximaely half of global occurrences are found in Québec
Massif Anorthosites
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Distribution of Anorthosite Massifs, NE North America
Forêt Montmorency
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Jotunites and Mangerites
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J-M
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Summary
Compared with Phanerozoic Calc-Alkaline plutonic rocks,
the Proterozoic Jotunite-Mangerite suite – found only in
association with massif anorthosites – is enriched in Fe-Ti-P,
as well as high-field-strength elements (Ga, Ce, Y, Zr, Nb, Zn),
but is depleted in transition-metal trace elements (V, Cr, Ni),
and large-ion-lithophile trace elements (Rb, Th, U).
Should you join our Department, you can learn more about acquiring,
interpreting, and understanding such data in
“Chemical Petrology.”
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Prof. Jill Pasteris
Apatite Bone
Raman Spectroscopy
Ocean floor3.6 km
Modernhorsetooth
Applied Mineralogy & Spectroscopy
Geology Biomineralization
Graduate Classes Offered Environmental MineralogyIdeas & Controversies in the Geosciences
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500 1000 1500 2000 2500 3000 3500 4000 500 1000 1500 2000 2500 3000 3500 4000
Raman shift ( cm-1)
OH(CO3)2-
synthesizedby ClaudeYoder, F&M
Cross-section of bone
(Sub-)Micrometer Analysis of Bone Mineral
Bone crystallites:few nm X 10s nm
850 900 950 1000 1050 1100 1150 1200
Whale
Bison
Halibut
Enamel
OH-Ap synth.
40 um
SyntheticCarbonatedApatite
DifferentBiologicalApatites
Microscopy: optical electron AFM
Raman MicroprobeSpectroscopy
Size, shape, distribution, and composition of bone mineral crystallites
Apatite: Ca10(PO4)6(OH)2
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Unexpected hydratednature of bone apatite
Mineralogy and propertiesof beaver teeth
Hypermineralized bone – betterinsights into composition and other properties of bone mineral
Mineralization and mechanicsof the rotator cuff
Ferrihydrite: orange coating
Amorphous Ca-phosphate
Rostrum:hypermineralized
Tendon-to-bone insertion:gradational properties inmineral composition andconcentration
Beaked whale
Mouse
OH
PCaOOH
Some Current Apatite Projects
Ca8.3 1.7(PO4)4.3(CO3)1.7(OH)0.3 1.7 nH2OBone apatite: