#sedimentology — Public Fediverse posts

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...

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

#Interbedding #Petrology #Stratigraphy #Sedimentology

Late Quaternary Variations in the Level of Paleo-Lake Malheur, Eastern Oregon
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https://doi.org/10.1006/qres.1998.2005 <-- shared paper
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https://www.oregonencyclopedia.org/articles/pleistocene-pluvial-lakes/ <-- shared technical article, “Pleistocene Pluvial Lakes” [OR]
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https://en.wikipedia.org/wiki/Malheur_Lake <-- shared Wikipedia page
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#EasternOregon #water #hydrology #geology #surfacewater #paleolake #LakeMalheur #Oregon #SouthernOregon #USA #endorheicbasin #endorheic #quaternary #fluvial #pluvial #fluvial #lacustrine ##Quaternary #Pleistocene #Holocene #PaleoLake #sediment #sedimentary #beaches #gravel #geology #sedimentology #tephra #volcanism #spatialanalysis #spatiotemporal #geologichistory #spatial #mapping #sampling #stratigraphy #dating #radiocarbon #chronology

Conceptualizing River Floodplains
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https://doi.org/10.1029/2024EF005681 <-- shared paper/commentary
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"PLAIN LANGUAGE SUMMARY: River floodplains are integrative ecosystems in which diverse processes operate together to maintain river health. Floodplains are as critical to river health as the channel itself, yet floodplains lack the legal protections afforded to river channels in many countries.
KEY POINTS
• A river floodplain is an integrative physical, chemical, biological system and a key component of a river corridor
• Contemporary societal perceptions and regulatory frameworks do not reflect this scientific consensus...”
#water #hydrology #river #floodplain #surfacewater #geology #sedimentology #geomorphology #ecology #biogeochemical #policy #planning #interdisciplinary #model #modeling #management #monitoring #ecosystem #riverhealth #legal #regulations #humanimpacts #overview

Laterite (Pedology 🟤)

Laterite is a soil type rich in iron and aluminum that often forms in hot, wet areas; most such soil is found in the tropics. Nearly all laterites are of rusty-red coloration due to high iron oxide content. Laterite soils develop by intensive and prolonged weathering of the underlying parent rock, usually under conditions of high temperatures and heavy rainfall...

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

#Laterite #Pedology #Regolith #Weathering #OreDeposits #Sedimentology

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...

https://en.wikipedia.org/wiki/Lens_(geology)

#Lens #Petrology #Sedimentology

Leaching Of Legacy Paper Mill Sludge Induces Lithification By Cementation Of Fluvial Sediment
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https://doi.org/10.1016/j.ancene.2025.100523 <-- shared paper
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[For almost 300 years – from 1709 to 2004 – Penicuik and district was producing high-quality paper which went out all over the world; Walter Scott’s Waverley novels and Robert Louis Stevenson’s notebooks were printed on Penicuik paper, and Turner painted on it too.]
#Legacy #Papermill #Penicuik #Midlothian #scotland #Sludge #Anthropogenic #lithification #Conglomerate #Cementation #geology #water #hydrology #fluvial #sediment #calcium #leacging #river #stream #waterways #streambed #calciumcarbonate #CaCO3 #SEM #EDX #sampling #XRD #waste #wastemanagement #industrial #industry #industrialwaste #pollution #sedimentology #geochemistry #papermillsludge #PMS

Unravelling The Dance Of Earthquakes - Evidence Of Partial Synchronization Of The Northern San Andreas Fault And Cascadia Megathrust
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https://doi.org/10.1130/GES02857.1 <-- shared paper
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“Previous paleoseismic work has suggested a possible stress triggering relationship between the Cascadia subduction zone and the northern San Andreas fault based on similar event timings. Turbidite successions correlated to both systems may support this hypothesis. Historic earthquakes in 1980 and 1992 in the Cascadia subduction zone and the 1906 earthquake on the northern San Andreas fault left turbidite records that are temporally well constrained by bomb-carbon−supported age-depth models..."
#geology #USWest #Seattle #Washington #California #earthquake #engineeringeology #fault #faulting #SanAndreas #Cascadiasubductionzone #linked #Cascadia #research #sediment #sedimentology #Turbidite #paleoseismology #historic #spatial #spatialanalysis #spatiotemporal #model #modeling #stress #subduction #dating #radiocarbon #Holocene

Inter-Basin Groundwater Flow In West-Central Florida
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https://doi.org/10.1016/j.jhydrol.2025.133423 <-- shared paper
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https://fl.water.usgs.gov/floridan/intro.html <-- shared USGS overview page, Floridan Aquifer System Groundwater Availability
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“HIGHLIGHTS
• The regional pattern of IGF in west-central Florida is dominated by the characteristics of the Upper Floridan Aquifer.
• IGF plays a major role in the available water for partitioning and watershed aridity index.
• Groundwater pumping affects IGF, and the change in IGF counteracts the human impact on available water..."
#GIS #spatial #mapping #groundwater #spatialanalysis #spatiotemporal #Florida #USA #waterresources #waterquality #watersecurity #regional #model #modeling #HSPF #MODFLOW #geology #sedimentology #hydrogeology #aquifer #runoff #discharge #watershed #precipitation #climate #aridity #index #pumping #humanimpacts #anthropogenic #watersupply

REGIS II - The Hydrogeological Model [Nederlands]
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https://www.dinoloket.nl/en/regis-ii-the-hydrogeological-model <-- shared project/data overview 1
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https://www.dinoloket.nl/en/subsurface-models/map <-- shared web mapping site
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https://basisregistratieondergrond.nl/inhoud-bro/registratieobjecten/modellen/regis-ii-hydrogeologisch-model-hgm/#:~:text=REGIS%20II%20is%20een%203D,lagen%20in%20de%20ondergrond%20zijn <-- shared project/data overview 2
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#GIS #spatial #mapping #geology #hydrogeology #Nederland #Holland #Dutch #wells #boreholes #data #core #lithology #REGISII #hydrogeological #model #spatialanalysis #water #hydrology #aquifer #aquitard #opendata #digital #sedimentology #hydrologic #pumping #tests #hydraulic #conductivity #transmissivity #geophysics

#NewPaper #Sedimentology #Paleoenvironment

Stuart D. Burley, Jonathan D. Radley & Robert A. Coram (2023)
‘A hard rain's a-gonna fall’: torrential rain, flash floods and desert lakes in the Late Triassic Arden Sandstone of Central England
Geology Today 39(3): 90-98
doi: https://doi.org/10.1111/gto.12430

#NewPaper #Paleontology #Sedimentology #Ichnology #Paleoenvironment

Bordy, E., Lockley, M., Rampersadh, A., Mukaddam, R., & Head, H. (2022). Life and land engulfed in the late Early Jurassic Karoo lavas of southern Gondwana. Geological Magazine, 1-22. doi:10.1017/S0016756822001169