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#stratigraphy

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💧🌏 Greg Cocks

Seismometers Reveal Earth's Longest-Runout Undersea Sediment Flows In Unprecedented Detail
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phys.org/news/2025-02-seismome <-- shared technical article
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doi.org/10.1038/s43247-025-021 <-- shared paper
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doi.org/10.1016/j.geomorph.202 <-- shared paper
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doi.org/10.1038/s41561-022-010 <-- shared paper
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#GIS #spatial #mapping #remotesensing #Congo #CongoChannel #bathymetry #seismometers #monitoring #sediment #flow #submarine #massmovement #canyon #infrastructure #pipes #cables #engineeringgeology #geology #model #current #debrisflow #bathymetric #Africa #offshore #coast #coastal #river #WestAfrica #instrumentation #acoustic #doppler #moorings #turbidity #thalweg #morphology #landslides #stratigraphy #seismic #turbiditycurrent #flow #gradient #slope #erosion #risk #hazard #spatialanalysis #spatiotemporal #seabed

cross section / schematic - Surge dynamics of canyon-flushing turbidity currents
Difference maps showing seabed changes (in metres) in the upper Congo Canyon between 2019 and 2020... The grey shaded base map shows seabed gradients in 2020. Shades of red correspond to areas of erosion, and blue to areas of deposition.
Bathymetric map of the Congo Canyon-Channel system and instrument placement
schematics - Schematic summary of the categories for types of seabed erosion observed in the Congo Canyon-channel between 2019 and 2020, and their relative volumetric importance
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💧🌏 Greg Cocks

Edge Of Mars’ Great Dichotomy Eroded Back By Hundreds Of Kilometres
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arstechnica.com/science/2025/0 <-- shared technical article
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dx.doi.org/10.1038/s41561-024- <-- shared paper
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#GIS #spatial #mapping #planet #Mars #remotesensing #imagery #landsurface #geology #topography #astrogeology #elevation #morphology #martian #geography #marsdichotomy #plateau #lowlands #model #3dmodel #basin #highlands #shoreline #ocean #crust #structuralgeology #chemostratigraphy #morphostratigraphy #geomorphometry #geomorphology #water #hydrology #CaSSIS #HiRISE #stratigraphy #strata #MOLA #laser #LiDAR #MawrthVallis #crater #mound #profile #crosssection #geochemistry #mineralogy #CRISM #CTX #HRSC #DTM #erosion #weathering #spatialanalysis #spatiotemporal

images - Morphological similarities between the stratigraphy in the mounds and the Mawrth Vallis plateau region
3D model, map, images and charts - Chemostratigraphy and morphostratigraphy of a well-exposed mound
3D map and cross section - Three-dimensional view of study area with stacked elevation profiles
image/map - the topography of Mars by the Mars Orbital Laser Altimeter (MOLA)
Public
Planetary Ecologist

Strike-slip fault (Geology terminology ⛰️)

In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, suc...

en.wikipedia.org/wiki/Strike-s

#StrikeSlipFault#EarthSCrust#Stratigraphy
Public
PostSapiens

#PostSapiens
The earliest unambiguous Neanderthal engravings on cave walls: La Roche-Cotard, Loire Valley, France | PLOS ONE
journals.plos.org/plosone/arti

#Sediment #Neanderthals #Paleoanthropology #Radioactive carbon dating #Caves #Optically stimulated luminescence #Stratigraphy #Lithic technology

journals.plos.orgThe earliest unambiguous Neanderthal engravings on cave walls: La Roche-Cotard, Loire Valley, FranceHere we report on Neanderthal engravings on a cave wall at La Roche-Cotard (LRC) in central France, made more than 57±3 thousand years ago. Following human occupation, the cave was completely sealed by cold-period sediments, which prevented access until its discovery in the 19th century and first excavation in the early 20th century. The timing of the closure of the cave is based on 50 optically stimulated luminescence ages derived from sediment collected inside and from around the cave. The anthropogenic origin of the spatially-structured, non-figurative marks found within the cave is confirmed using taphonomic, traceological and experimental evidence. Cave closure occurred significantly before the regional arrival of H. sapiens, and all artefacts from within the cave are typical Mousterian lithics; in Western Europe these are uniquely attributed to H. neanderthalensis. We conclude that the LRC engravings are unambiguous examples of Neanderthal abstract design.
Public
💧🌏 Greg Cocks

New Zealand Has A Unique [Open Data] Fossil Record [Online Database] Named FRED
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eos.org/articles/new-zealand-h <-- shared technical article
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doi.org/10.1080/00288306.2020. <-- shared paper
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fred.org.nz/ <-- FRED’s open data online portal
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[my ‘minor’ in my MSc Geology at the University of Auckland, NZ was in palæontology, and I have had an interest ever since; total aside – <fred.*> is what I call my temp/junk/working files, anyone else?]
#GIS #spatial #mapping #NewZealand #fossil #fossils #database #opendata #FRED #palæontology #paleontology #palaeontology #onlineportal #standards #records #publicrecords #geology #stratigraphy #sedimentology #scientifichistory #fossilrecord #samples #sampling
@gnsscience

maps - Example maps of New Zealand mainland (>73,000 localities), Raukumara Peninsula (>13,000 localities), and detail of Mahia Peninsula (212 localities), to illustrate the density and distribution of fossil localities recorded in the Fossil Record File.
screen shot - Several different query facilities are provided by the FRED interface into the FRF, the most comprehensive of which is the ‘Advanced Query’. The figure depicts a partially populated Advanced Query search screen. Search fields are grouped into various categories (locality, stratigraphy, taxonomic, etc.) and a selection of operators (equals, contains, numeric inequalities, etc.) to allow a series of Boolean statements to be constructed. Full instructions are provided in the on-line user manual.
graphic - reconstruction of an example of a New Zealand marine reptiles as seen in the fossil record
photos - Left – Two of the most common fossil taxa recorded in the Fossil Record File, a rimu pollen grain, Dacrydium cupressinum (top; scale bar = 20 μm) and the foraminifer Globoquadrina dehiscens (bottom; scale bar = 200 μm). Right (stereo pair) – One of the rarest taxa recorded, the mosasaur Rikisaurus tehoensis (V19/f0068; scale bar = 200 mm). The microfossils have each been recorded more than 5000 times; the mosasaur only once.
Public
Emilia Jarochowska 🇺🇦🌱

Do you hear #stratigraphy and think 🥱? Physics-based modelling, increased understanding of astronomical forcing, self organization and improvements in dating precision and accuracy are turning this field upside down. Consider joining us in stirring this field at the Geological Society event
"Stratigraphy in Modern Geoscience: methodologies, application and future relevance" geolsoc.org.uk/01-EG-Stratigra

Deadline for abstract submission 1 September 2023

Composite image showing from left to right: a cliff outcrop of geological strata, a top (plane) view of an output of a sedimentary model, a model output representing a cross section through several depositional sequences on a continental shelf
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