Lmst

#sediment

Large Drainage Systems Produced Half Of Mars’ Ancient River Sediment
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https://doi.org/10.1073/pnas.2514527122 <-- shared paper
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https://www.thebrighterside.news/post/scientists-discover-16-giant-river-networks-on-ancient-mars-where-life-could-have-thrived/ <-- shared technical media article
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#water ##hydrology #dynamic #planet #Mars #extraterrestrial #ecosystems #drainage #landform
#drainageways #drainagesystems #Martian #terrain #geomorphology #geomorphometry #catchments #fluvia #pluvial #river #sediment #solarsystem #sedimentarybasins #life #habitable #sedimenttransport #topography #erosion #impact #crater #GIS #spatial #mapping #remotesensing #spacecraft #MRO #marsobservation #exploration #martian #MarsAttack

Ancient microbe DNA as a record of climate change 🦠🧬: mountain lake sedaDNA from the past 430 years reveals major microbial shifts since 1960, following climate shifts.
https://doi.org/10.1007/s00248-025-02612-2
#MetagenomicsMonday #SPAAM #aDNA #climate #change #metagenomics #sediment #sedaDNA #mountain #lake

Nordsee: Wattenmeer verliert seine Substanz. Sedimentablagerung im deutschen Wattenmeer hat stärker abgenommen als gedacht. #Nordsee #Wattenmeer #Meeresspiegel #Tidenbecken #Sediment #Ozean
https://www.scinexx.de/news/geowissen/nordsee-wattenmeer-verliert-seine-substanz/

The abstract submission deadline for the @EuroGeosciences meeting is coming up soon, and if you are thinking about submitting anything on #diagensis or reactions in the #sediment, consider our session (SSP3.9) where we ask:
What if the most important setting for carbonate diagenesis is the first few meters below the seafloor?

What if the most important setting for carbonate diagenesis is the upper few meters of the sediment pile, in marine pore waters, not the deeper burial or meteoric realms? If correct, this is a paradigm shift in how we understand marine chemical fluxes, limestone formation, the marine fossil record, and sediment budgets. We invite contributions from all disciplines, from modern to ancient carbonates, laboratory, and modelling approaches, focusing on understanding this under-appreciated geochemical setting and also the broader impacts for Earth system studies.

#WeekenadReading: Dunlea et al., about the #sediment at the bottom of the Pacific #Ocean, and how they might be an important sink for the potassium and magnesium cycles.

Link: https://www.sciencedirect.com/science/article/abs/pii/S0016703725006295

#throwbackThursday Templin Highway, April 2023

#photography #geology #sediment #sedimentation #rocks

a compacted geologic formation, slightly more shaded, with layers of rock running diagonally upper left to lower right

a compacted geologic formation, slightly lighter, with layers of rock running diagonally upper left to lower right

a hypnotic pattern of liquid flowing dirt, left behind as sediment by a slow-moving creek

a patch of sand with a number of flowing lines weaving across it, almost like a child's finger painting, but most likely left by snakes

Building Damage Risk In Sinking Indian Megacities
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https://doi.org/10.1038/s41893-025-01663-0 <-- shared paper
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https://doi.org/10.5194/isprs-annals-X-G-2025-613-2025 <-- shared paper
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https://www.downtoearth.org.in/urbanisation/writing-on-the-wall-groundwater-exploitation-is-triggering-subsidence-in-indo-gangetic-plain-90523 <-- shared media article
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#GIS #spatial #mapping #spatialanalysis #India #subsidence #risk #hazard #groundwater #depletion #exploitation #pumping #sinking #overpumping #aquifer #watermanagement #structural #damage #infrastructure #cost #residential #publicsafety #economics #engineering #construction #buildingcodes #remotesensing #model #modeling #satellite #earthobservation #elevation #megacities #city #cities #urban #differential #settlement #planning #policy #mitigation #maintainence #inSAR #verticallandmovement #VLM #engineeringgeology #geostatistics #flood #flooding #sediment

A graded bed and the start of the next one in a Silurian greywacke, Appalachians. The mostly quartz and plagioclase grains get finer to the left, indicating that 'up' was to the left as the grains settled in the water column.

#ThinSectionThursday #Geology #Sediment #Quebec

A thin section imaged in plan-polarized light. The big clear grains are quartz, and get finer to the left, before abruply coarsening again. The original 'up' was to the left.

Frozen No More - A Case Study Of Arctic Permafrost Impacts Of Oil And Gas Withdrawal
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https://doi.org/10.1038/s41598-024-76292-2 <-- shared paper
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#GIS #spatial #mapping #remotesening #earthobservation #oil #gas #oilandgas #O&G #energy #extraction #drilling #exploration #subsurface #permafrost #melting #humanimpacts #climatechange #oilextraction #risk #hazard #riskassessment #water #hydrology #sediment #tundra #oilwellpads #NorthSlope #Alaska #arctic #spatialanalysis #spatiotemporal #remediation #drillpad #oilpad #lease #industry #habitat #ecosystem #fieldwork #sampling #geology #engineeringgeology #impact

In this new paper, researchers extended the sedaDNA analysis beyond cave sediments: bone-adhered deposits preserved human, microbial, plant & animal sequences. #MetagenomicsMonday #SPAAM #aDNA #sedaDNA #metagenomics #cave #sediment
https://doi.org/10.1093/molbev/msaf202

Fossil Footprints Reveal Two Species Of Human Ancestors Lived Side-By-Side, A Scientific First
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https://www.earth.com/news/hominin-footprints-show-two-extinct-species-of-early-humans-lived-side-by-side/ <-- shared technical article
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https://doi.org/10.1126/science.ado5275 <-- shared paper
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https://doi.org/10.1016/j.jglr.2022.10.007 <-- shared paper
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[not my usual ‘general’ subject matter to post – but who amazing and impressive to find/recognise and then decipher this!]
#fieldwork #3Dvisualisation #spatialanalysis #anthropology #tracefossils #hominid #homoerectus #paranthropusboilei #africa #fossil #footprint #human #evolution #ancestor #dating #TurkanaBasin #kenya #africa #sediment #sedimentology #water #hydrology #LakeTurkana #shoreline #geology #soil #stratigraphy #palaeontology #paleontology #model #modeling #remotesensing

Wer die #Elbe immer weiter skupellos vertieft und deshalb immer mehr #Sediment provoziert, der Fahrrinnen, Schleusentore und Hafen verschlickt, der hat offenkundig auch keine Skrupel, den ausgebaggerten, schadstoffbelasteten #Schlick am #Naturschutzgebiet zu verklappen.

Es ist ein Trauerspiel in vielen Akten, hier in #Hamburg.

https://www.bund-hamburg.de/service/presse/detail/news/hamburg-ignoriert-vereinbarungen-schadstoffbelasteter-hafenschlick-wird-trotz-alternativen-am-weltnaturerbe-wattenmeer-verklappt/

Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
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https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
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https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
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https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
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"KEY POINTS
• Basalts and pebbly to cobbly sandstones have been dredged from the Fairway Ridge, Coral Sea
• Dating of the rocks and interpretation of magnetic anomalies allow mapping of major geological units across North Zealandia
• This work completes offshore reconnaissance geological mapping of the entire 5 million square km Zealandia continent…”
#geology #doggerland #Zealandia #TeRiuaMaui #godwana #godwanaland #cretaceous #mapping #geologicmapping #spatialanalysis #model #modeling #NewZealand #SouthPacific #continent #sampling #sediment #dredging #petrography #geochemistry #isotope #analyses #research #cenozoic #intraplate #platetectonics #tectonics #eocene #remotesensing #geophysics #geomagnetism

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

The Disappearance of Lac [Lake] Rouge [remote sensing]
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https://www.earthobservatory.nasa.gov/images/154526/the-disappearance-of-lac-rouge <-- Shared NASA Earth Observatory Images Of The Day
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https://www.cbc.ca/news/canada/north/lake-drainage-land-collapse-waswanipi-lake-rouge-lake-doda-1.7539994 <-- shared media article
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“A landscape in central Quebec transformed suddenly in spring 2025 when a lake burst its banks and drained. Members of the nearby community of Waswanipi who use the area for hunting, fishing, and trapping learned of the curious incident in early May, after reports of a washed-out road. Further air- and ground-based investigations revealed that land around the lake had collapsed and that Lac Rouge had emptied..."
#GIS #spatial #mapping #spatiotemporal #water #hydrology #lake #LacRouge #Quebec #Canada #Waswanipi #Cree #FirstNation #wildfire #geomorphometry #outflow #OLI2 #Landsat #Landsat9 #earthobservation #remotesensing #wildlife #habitat #change #ecology #sediment # #snowmelt #rainfall

Applied to samples from a Neolithic settlement, a recent study evaluated two methods, CT-scanning (and CBCT-scanning) and micromorphological sediment screening, for prioritization in excavations.

Learn more about the authors' findings in AAP’s newest issue:

https://doi.org/10.1017/aap.2025.5

#archaeology #excavation #sediment

New USGS Map Offers An Interactive Look At The Rocks Beneath Our Feet
The Cooperative National Geologic Map is an interactive tool that builds on both cutting-edge technology and decades of mapping by geoscientists.
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https://eos.org/articles/new-usgs-map-offers-an-interactive-look-at-the-rocks-beneath-our-feet <-- shared EOS-source technical article
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https://ngmdb.usgs.gov/nationalgeology/#lat=37.0000&lng=-97.5000&zoom=5&theme=esurf&symbology=synthesis <-- shared @USGS resource
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[recognising that I posted something similar earlier ~smile~]
#GIS #spatial #mapping #data #fedopendata #fedscience #geologicmap #geology #webmap #geologicdata #energy #minerals #mining #waterresources #hydrology #risk #hazard #landuse #infrastructure #planning #realestate #insurance #rock #sediment #mapunits #compilation #criticalminerals #economicgeology #nation #mobile #fieldwork #interactivewebtool #publicgood #online #state #federal #map #usecase #energy #resources #CooperativeNationalGeologicMap #USGS #mainland #CONUS
@USGS