#petrology — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #petrology, aggregated by home.social.
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Ventifact (Petrology 💎)
A ventifact is a rock that has been abraded, pitted, etched, grooved, or polished by wind-driven sand or ice crystals. The word "Ventifact" is derived from the Latin word "Ventus" meaning 'wind'. These geomorphic features are most typically found in arid environments where there is little vegetation to interfere with aeolian particle transport, where there are frequently strong wi...
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McGill: Assistant Professor in Earth and Planetary Sciences, Solid Earth Processes (Tenure Track)
We seek a colleague who investigates the chemical, mineralogical, and physical composition of the solid Earth and its interactions with other Earth systems.
Review of applications will begin Oct. 1, 2026.
Enquiries: Chair of the Search Committee, Jeffrey McKenzie ([email protected]).
Apply through Workday:
https://mcgill.wd3.myworkdayjobs.com/en-US/McGill_Careers/job/Adams-Building/Assistant-Professor-in-Earth-and-Planetary-Sciences--Solid-Earth-Processes_JR0000078451 -
Interbedding (Petrology 💎)
In geology, interbedding occurs when beds of a particular lithology lie between or alternate with beds of a different lithology. For example, sedimentary rocks may be interbedded if there were sea level variations in their sedimentary depositional environment. Intercalation is a special case of interbedding where a layer is variably inserted into an already existing s...
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Symplectite (Petrology 💎)
A symplectite is a material texture: a micrometre-scale or submicrometre-scale intergrowth of two or more crystals. Symplectites form from the breakdown of unstable phases, and may be composed of minerals, ceramics, or metals. Fundamentally, their formation is the result of slow grain-boundary diffusion relative to interface propagation rate. If a ...
https://en.wikipedia.org/wiki/Symplectite
#Symplectite #Petrology #Mineralogy #PhaseTransitions #MetamorphicPetrology
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🚨Job Alert‼️🚨
5 year PostDoc, Technical University Berlin. #Mineralogy, #petrology, #geochemistry
Responsible for laser/solution-ICP-MS laboratory; research and teaching.
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🚨Job Alert !!🚨 Institute of Earth Sciences, Heidelberg University, Germany
🔬 Electron microprobe analysis (EPMA)
🔬 Scanning electron microscopy, including SEM–EBSD
🔬 Raman spectroscopy
🌋 Method development in metamorphic and magmatic #petrology 🧪⚒️ #geologyhttps://adb.zuv.uni-heidelberg.de/info/INFO_FDB$.startup?MODUL=LS
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Recent laboratory findings reveal that Mercury's magmas stay molten at significantly lower temperatures than Earth's due to the planet's unique chemical composition, which is highly reduced, iron-poor, and sulfur-rich.
#PlanetaryScience #Geochemistry #Petrology #sflorg
https://www.sflorg.com/2026/04/ps04132601.html -
Are you looking for a PhD position in the field of experimental planetary science? Do you have a background in Geochemistry, Mineralogy, Petrology, or Earth and Planetary Sciences in general?
The ERC Starting Grant group ELMO led by Christian Renggli @bsky.app.profile.renggli.bsky.social is looking for a doctoral researcher to join them: https://www.mps.mpg.de/phd/experimental-laboratory-magma-ocean
Application deadline is 1 June 2026.
#PhDPosition #MPSGoettingen #JobAd #Planetology #PlanetaryScience #EarthScience #Geochemistry #Mineralogy #Petrology #MagmaOcean #Planets #RockyPlanets #Space #Astrodon #SolarSystem #Goettingen #Germany
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Facies (Petrology 💎)
In geology, a facies is a body of rock with distinctive characteristics. The characteristics can be any observable attribute of rocks and the changes that may occur in those attributes over a geographic area. A facies encompasses all the characteristics of a rock including its chemical, physical, and biological features that distinguish it from adjacent rock. The term "facies" was i...
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🚨Job Alert! 🚨 Professorship (W 2) for #Petrology at #Geosciences, Uni Potsdam. 🧪⚒️
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Iron–nickel alloy (Petrology 💎)
An iron–nickel alloy or nickel–iron alloy, abbreviated FeNi or NiFe, is a group of alloys consisting primarily of the elements nickel and iron. It is the main constituent of the "iron" planetary cores and iron meteorites. In chemistry, the acronym NiFe refers to an iron–nickel catalyst or component involved in various chemical reactions...
https://en.wikipedia.org/wiki/Iron–nickel_alloy
#IronNickelAlloy #Petrology #Meteorites #FerrousAlloys #StructureOfTheEarth
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Lens (geology) (Petrology 💎)
In geology, a lens or lentil is a body of ore or rock that is thick in the middle and thin at the edges, resembling a convex lens in cross-section. To thin out in all directions is to "lens out", also known as "lensing". The adjectives "lenticular" and "lentiform" are used to describe lens-like formations. Lenticle is a synonym for lentil, but may also refer to a fragment of rock that...
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K-U ratio (Volcanology 🌋)
The K/U Ratio is the ratio of a slightly volatile element, potassium, to a highly refractory element, uranium. It is a useful way to measure the presence of volatile elements on planetary surfaces. The K/U ratio helps explain the evolution of the planetary system and the origin of Earth's Moon.
https://en.wikipedia.org/wiki/K-U_ratio
#KURatio #Origins #Petrology #Volcanology #Astrobiology #PlanetaryGeology
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Joint (geology) (Geology terminology ⛰️)
In geology, and more specifically in structural geology, a joint is a break of natural origin in a layer or body of rock that lacks visible or measurable movement parallel to the surface of the fracture. Although joints can occur singly, they most frequently appear as joint sets and systems. A joint set is a family of parallel, evenly spaced joints...
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🚨Job Alert!🚨TT Position at Binghamton University, New York.
Relevant specializations include #mineralogy, #petrology, #planetary #geology, clay mineralogy, carbon sequestration, economic geology. ⚒️🧪http://binghamton.interviewexchange.com/jobofferdetails.jsp?JOBID=193860
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@oldclumsy_nowmad @mineralsocamerica.bsky.social @FaithfullJohn
This EBSD scan was part of an M.Sc. thesis by Arvid Gonzalez -we're working getting it published, but in the meantime, his unpublished thesis can be downloaded from:
https://escholarship.mcgill.ca/concern/theses/cf95jh65k?locale=en
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Macrocrystalline (Petrology 💎)
In geology, macrocrystalline rocks have crystals large enough to easily be identified by sight with the naked eye. Macrocrystalline rocks can be further subdivided into fine-grained, medium-grained, large-grained, and coarse-grained rock, where fine-grained rocks have a grain size of less than 1 mm, medium-grained rocks have a grain size of 1 to 5 mm, large-grained rocks ...
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Fluid inclusion (Petrology 💎)
A fluid inclusion is a bubble of liquid and/or gas that is trapped within a crystal. As minerals often form from a liquid or aqueous medium, tiny bubbles of that liquid can become trapped within the crystal, or along healed crystal fractures. These inclusions usually range in size from 0.01 mm to 1 mm and are only visible in detail by microscopic study, however s...
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Euhedral and anhedral (Petrology 💎)
Euhedral and anhedral are terms used to describe opposite properties in the formation of crystals. Euhedral crystals are those that are well-formed, with sharp, easily recognised faces. The opposite is anhedral, which describes rock with a microstructure composed of mineral grains that have no well-formed crystal faces or cross-section shap...
https://en.wikipedia.org/wiki/Euhedral_and_anhedral
#EuhedralAndAnhedral #Petrology #MineralHabits #Crystallography
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Point counting (geology) (Geology ⛰️)
In geology, point counting is a method to determine the proportion of an area that is covered by some objects of interest. In most cases the area is a thin section or a polished slab. The objects of interest vary between subdisciplines and can for example be quartz or feldspar grains in sedimentology, any type...
https://en.wikipedia.org/wiki/Point_counting_(geology)
#PointCounting #Geology #Petrology #Geostatistics #IgneousPetrology #GeologicalTechniques
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🚨Job Alert!!🚨Assistant Professor - Mineral Science - University of Houston, Texas. High-temperature #geochemistry, #Mineralogy, igneous #petrology, and/or #metamorphic petrology #geology ⚒️
https://careers.uh.edu/jobs/assistant-professor-mineral-science-houston-texas-united-states
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Diamond inclusions (Mineralogy 💎)
Diamond inclusions are the non-diamond materials that get encapsulated inside diamond during its formation process in the mantle. The trapped materials can be other minerals or fluids like water. Since diamonds have high strength and low reactivity with either the inclusion or the volcanic host rocks which carry the diamond to the Earth's surface, ...
https://en.wikipedia.org/wiki/Diamond_inclusions
#DiamondInclusions #Diamond #Gemology #Petrology #Mineralogy
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Microcracks in rock (Petrology 💎)
Microcracks in rock, also known as microfractures and cracks, are spaces in rock with the longest length of 1000 μm and the other two dimensions of 10 μm. In general, the ratio of width to length of microcracks is between 10−3 to 10−5. Due to the scale, microcracks are observed using microscope to obtain their basic characteristics. Microcrack ...
https://en.wikipedia.org/wiki/Microcracks_in_rock
#MicrocracksInRock #Petrology #RockMechanics #FractureMechanics
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'Sandige Angelegenheit' #FotoVorschlag
#photography #petrology -
Rosemarie and Dietrich Klemm Collection (Petrology 💎)
The Rosemarie and Dietrich Klemm Collection, deposited in the British Museum in London, consists of thousands of rock samples from the sites of Egyptian quarries. The collection was formed by the Egyptologist Rosemarie Klemm and the geologist Dietrich D. Klemm, both at Ludwig-Maximilians-Universität, Munich...
https://en.wikipedia.org/wiki/Rosemarie_and_Dietrich_Klemm_Collection
#RosemarieAndDietrichKlemmCollection #Petrology #AncientEgypt
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Vug (Geology terminology ⛰️)
A vug, vugh, or vugg is a small- to medium-sized cavity inside rock. It may be formed through a variety of processes. Most commonly, cracks and fissures opened by tectonic activity are partially filled by quartz, calcite, and other secondary minerals. Open spaces within breccias formed by an ancient collapse are another important source of vugs. Vugs may also form when...
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Refractory (planetary science) (Volcanology 🌋)
In planetary science, any material that has a relatively high equilibrium condensation temperature is called refractory. The opposite of refractory is volatile. The refractory group includes elements and compounds like metals and silicates which make up the bulk of the mass of the terrestrial planets and ast...
https://en.wikipedia.org/wiki/Refractory_(planetary_science)
#Refractory #Origins #Petrology #Volcanology #Astrobiology #PlanetaryGeology
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🚨Job alert 🚨 Position in #mineralogy and #petrology at Uni Fribourg, Switzerland
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Are you in #EarthScience and interested in improving #AcademicPublishing options in your field? I am preparing a proposal for a PCI Eart Sciences, which would be part of https://peercommunityin.org/ family of journals. The digital infrastructure and brand are there, i have benefited as an author and as an editor from PCI Paleo and I can attest to the high quality and robustness of this platform and process. Being involved doesn’t actually require committing a lot of your time, as it takes years to establish a new journal. At this point it is more about launching it and making it visible, so I am primarily looking for mid-to senior-career collaborators who can help steer publications towards this venue. Especially if you’re in the field of #EnvironmentalScience, #Tectonics, #Petrology, #Mineralogy, #PhysicalGeography, #Hydrogeology, #EarthSystemScience and #Climate you are most welcome as these fields are underrepresented in my network. You can contribute by becoming an editor, pledging a submission, or helping recruit a BigName in your field (maybe that’s you?). Please have a look at https://peercommunityin.org/ or get in touch. #OpenAccess #OpenScience #geoscience #OpenPeerReview
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She was unhelpfully limited in her library & classroom access to shield her from the “rougher influences” of the young men; in her isolation she decided to focus on #petrology. Her thesis “A Contribution to the Geology of South Mountain, Pennsylvania” is regarded as a major contribution to Appalachian geology & she published it in the 1st volume of Journal of Geology in 1893. She furthered understanding of the east coast of the US & redefined the recognized cycles of erosion in Pennsylvania. 🧵3