Lmst

Why Is The Federal Government Spending Millions On Aerial Geological Mapping In Southern Colorado?
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https://www.cpr.org/2025/11/19/geological-survey-earth-mri-colorado-minerals/ <-- shared media article
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https://www.usgs.gov/earth-mapping-resources-initiative-earth-mri <-- shared (USGS) Earth Mapping Resources Initiative (Earth MRI) entry page
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https://ngmdb.usgs.gov/emri/#3/40/-96 <-- shared Earth MRI web map(s)
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https://www.usgs.gov/centers/gggsc <-- shared USGS Geology, Geophysics, and Geochemistry Science Center entry page
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https://mrdata.usgs.gov/earthmri/data-acquisition/project.php?f=html&pid=1071 <-- shared USGS Colorado Alkaline Igneous Belt Survey report
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https://www.usgs.gov/programs/mineral-resources-program/science/what-are-critical-minerals-0 <-- shared final 2025 #DOI / #USGS report on list of critical minerals
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#geophysics #remotesensing #earthobservation #airborne #mapping #spatial #criticalminerals #colorado #geology #structuralgeology #Colorado #USA #EarthMRI #SouthernColorado #geologicdata #geologicmapping #geochemistry #igneous #survey #geophysicalsurvey #economic #economy #mineral #mineralresources
@CPR @USGS @NV5

Two classes of #igneous rocks this week.

https://en.wikipedia.org/wiki/Igneous_rock

https://en.wikipedia.org/wiki/Igneous_rock#/media/File:Mineralogy_igneous_rocks_EN.svg

https://en.wikipedia.org/wiki/Intrusive_rock

https://en.wikipedia.org/wiki/Extrusive_rock

Attendance 75/109 and 72/109 #GL101

#ThinSectionThursday Here's a lovely starburst of dendritic plagioclase crystals in a basalt from the Rubha a' Chromain intrusion, near Carsaig on the south coast of Mull. Feathery/plant-like crystals like this are typical of fast crystal growth in magmas caused by rapid cooling. Field of view ca. 2mm wide. One of 5500 rock thin sections made by Alex Herriot at his home in East Kilbride, now in the Hunterian Museum, University of Glasgow.

#Geology #Mull #Microscopy #Igneous

A view of a rock thin section down a polarizing microscope. The rock is mostly mage of grey, black and white feathery, elongate crystals. At the lower left is a large starburst feature of white crystals.

@ark_brut Orbicular granites🤩 🤩 Finland has lots of these lovely rocks 🥰 #Geology #Igneous

📢 🤓 Ultra-niche book alert! 🤓 Not for everybody, but this is an absolutely *stunning* book: Stearns Morse's updated 2024 edition of Basalts and Phase Diagrams: https://link.springer.com/book/10.1007/978-3-030-97882-2 It is beautifully written (and often funny), comprehensive, wise and informative. This is the kind of thing you can only do using book format. If you work on igneous rocks, or in experimental petrology, read it! 🤩 🤩 🤩 #Geology #Igneous #IgneousPetrology #PhaseDiagrams #ExperimentalPetrology

The GEOROC Database (Geochemistry of Rocks of the Oceans and Continents)
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https://georoc.eu/georoc/new-start.asp <-- shared link to GEOROC resource
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H/T Paul Cleverley glasses curly blonde hair
“The GEOROC Database (Geochemistry of Rocks of the Oceans and Continents) is a comprehensive collection of published analyses of igneous and metamorphic rocks and minerals. It contains major and trace element concentrations, radiogenic and nonradiogenic isotope ratios as well as analytical ages for whole rocks, glasses, minerals and inclusions. Metadata include geospatial and other sample information, analytical details and references….
Current content of GEOROC:
• 22,750 papers
• 685,660 samples
• 2,680,100 analyses
• 39,334,100 single data values…”
#opendata #geology #geoscience #GEOROC #database #global #igneous #metamorphic #rocks #minerals #geochemistry #results #analyses #published #metadata #spatial #GIS #mapping #papers #samples #datavalues

Geology is just another way of saying “rock-based double entendres”

Also yes my masters project was looking at hot dykes down a lens (oceanic crust alteration veins, behave)

#geology #meme #cat #igneous #hot

Attention-Worthy Links for November 29th, 2024

https://bit.ly/awl112924

#Sulfur #Cooling #dimethyl sulphide #biofuels #aggregate environmental costs #Brazil #Vietnam #Drought #Robusta #Arabica #microplastics #Tires #28% #zinc oxide #6PPD #salmon #tidal power #Eco Wave #CO2 #mass extinctions #igneous #magma #CycloRotor #Voith Schneider propeller #Hailin impact crater #Northeast China ##West Iceland #Sundhnúkur #Grindavík #western Iceland ##San Geronimo III ##1541 #Sobaipuri O’odham #haakbus

Scientists Unveil Mysterious Origins Of Earth’s Largest Igneous Rocks
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https://scitechdaily.com/scientists-unveil-mysterious-origins-of-earths-largest-igneous-rocks/ <-- shared technical article
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https://doi.org/10.1126/sciadv.adn3976 <-- shared paper
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#GIS #spatial #mapping #spatialanalysis #spatiotemporal #geology #structuralgeology #earth #global #igneous #vulcanism #massif #anorthosite #origin #formation #morphology #platetectonics #subduction #crust #mantle #Grenvilleorogen #orogeny #geochemistry #mineralogy #magma #oceaniccrust #model #modeling #petrogensis

schematic / cross-section - Proposed model for the formation of the Marcy and Morin massif-type anorthosites.

charts - Marcy and Morin Nd-Sr-O systematics compared to Magma Chamber Simulator model results.

charts - Boron isotope systematics of the Marcy and Morin anorthosites

photo and think-section images - Anorthosites and leucogabbros in outcrop and thin section.

The crystallization of large replenished magma bodies is amazingly complex. The photos of layered rocks from the Bushveld Complex in this new #OpenAccess paper are mind-bogglingly wonderful 🤩 🤯 🤓 . The wider applicability of their conclusions might be disputed by some, but good stuff though! https://doi.org/10.1016/j.lithos.2024.107621 #Geology #Igneous #LayeredIntrusions

Image of a page from a scientific paper about layering within the Bushveld Intrusion in South Africa. Most of the rocks are white anorthosite, and pale grey norite , with spectacular planar and folded dark layers of chromitite within them.

My two minor obsessions captured at the same moment. Here are pictures of my favourite bicycle, an old school build using a custom #DaveYates frame, resting against my favourite rock, a beautifully smooth #glacial erratic composed of a very hard, fine grained, mid grey #igneous rock with pale mm-cm sized plagioclase phenocrysts. Generations of bottoms have enhanced the glacial smoothing 🙂. Located in #MaxwellPark #Glasgow #geology #cycling

Blue drop bar bicycle resting against a smooth boulder about 1.5 x 0.8m x 0.8m

Blue drop bar bicycle resting against a smooth boulder about 1.5 x 0.8m x 0.8m. The frame maker's name Dave Yates visible.

Close of of phenocrystic igneous rock with light grey crystal inclusions (phenocrysts) of plagioclase

Magma And Mountain Building At The Columbia River Gorge
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https://www.earthscope.org/news/magma-and-mountain-building-at-the-columbia-river-gorge/ <-- shared technical article
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https://doi.org/10.1126/sciadv.adj3357 <-- shared paper
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#GIS #spatial #mapping #remotesensing #GPS #geophysics #subductionzone #plateboundary #PNW #Oregon #columbiariver #geology #structuralgeology #model #modeling #vulcanism #volcanic #magma #fieldwork #igneous #platetectonics #uplift #compression #extension #geologicmapping #geologic #orogeny #mountains #mountainbuilding

photo - Palouse Falls, Scablands, Eastern Washington

charts and geologic cross sections - inference of the transcrustal magmatic structure

maps, geologic cross sections, graphics and charts - overview of the columbia river gorge

Reconnaissance Basement Geology and Tectonics of South Zealandia
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https://doi.org/10.1029/2018TC005116 <-- shared paper
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#GIS #spatial #mapping #geology #structuralgeology #geologicmapping #NewZealand #Zealandia #remotesensing #magnetic #reconnaissance #basement #tectonics #SouthZealandia #igneous #batholith #magneticanomaly #continent #seafloor #bathymetry #orogeny #gondwana ##gondwanaland #sampling #hikurangi #forearcbasin #forearc #boreholes #dredging #faulting #faults #gravity #seismic #seismology #renunitegondwanaland #geophysics

Geological map ~1:25 M scale showing offshore South Zealandia and the West Antarctic conjugate margin.

map / graphic - Topography of Zealandia, outlined in pink. The linear ridges running north-northeast (Colville to the west and Kermadec to the east, separated by the Havre Trough and Lau Basin) and southwest (the Resolution Ridge System) away from New Zealand are not considered part of Zealandia, nor are Australia (left), Vanuatu, or Fiji (top centre).

Seismic sections from locations in western South Zealandia.

Devils Postpile National Monument Volcanic Columnar Basalt buy here:

https://pixels.com/featured/devils-postpile-columnar-basalt-norma-brandsberg.html?newartwork=true

#devilspostpile #nationalmonuments #columnarbasalt #volcanicrocks #california #blackandwhitelandscapes #igneous #fedigiftshop #MastoArt #AYearForArt #wallart #gifts #giftideas #interiordecor #interiordesign #homedecor #homedecoration #interiordesigner #creativetoots #artbooster #nature #BuyIntoArt #elegantfinephotography #normabrandsberg

Devils Postpile National Monument Volcanic Columnar Basalt buy here:

https://pixels.com/featured/devils-postpile-columnar-basalt-norma-brandsberg.html?newartwork=true

Twinned #feldspar crystals
In a paving stone in #Exeter, United Kingdom, pound coin for scale.
Must have cooled slowly, allowing large crystals to grow, so #intrusive, not #extrusive / #volcanic.
My #photo of an #igneous #mineral because I like #geology

This digital photo from a compact camera shows a phenocryst of intergrown feldspar crystals (star-shaped lighter material) in a darker, finer grained but still not aphantic ground mass. There is a pound coin at the bottom for scale.

Geoscientists Discover Massive Undersea Water Reservoir Off New Zealand’s Coast
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https://www.sci.news/othersciences/geophysics/hikurangi-water-reservoir-12323.html <-- shared technical article
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https://doi.org/10.1126/sciadv.adh0150 <-- shared paper
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#GIS #spatial #mapping #remotesensing #geology #structuralgeology #NewZealand #model #modeling #megathrust #fault #faulting #subduction #water #groundwater #Hikurangi #hydrogeology #igneous #vulcanism #volcaniclastic #seamounts #marine #bathymetry #seafloor #volcanicplateau #subductionzone #seismicimaging #seismic #earthquake #slowslip #tectonics #geoscience

Attendance 88/142 in GL101.

Finished #igneous rocks.

Giant's Causeway http://gigapan.com/gigapans/188355 & https://goo.gl/okVBNo

Positively weathered dykes https://goo.gl/R6KQZ5

Attendance 78/143 in GL101.

Did not take long to get below 100 students showing up.

More #igneous rocks.

#granite https://www.mindat.org/min-48141.html

#rhyolite https://www.mindat.org/min-48451.html

CO2 was quickly over 1000ppm again and averaged 1160ppm. Not sure what the difference is today.

Several students coughing and sneezing.

Attendance 106/149 in GL101.

Started #igneous rocks.

Bowen's reaction series https://en.wikipedia.org/wiki/Bowen%27s_reaction_series

CO2 in the classroom was better than previously and again average 780ppm. Seems the air exchange rate has improved.

Several students coughing a lot.

Some #DogWalkingGeology from last week. Spud is pointing out some nice layered gabbro-melatroctolite from the Ben Buie Complex in SE Mull. 😊 #Geology #Igneous

#igneous

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