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#lithology — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #lithology, aggregated by home.social.

  1. Result of a Principal Component Analysis (PCA) created from combined median composites of Sentinel-1 and Sentinel-2 imagery — somewhere in the Sudanese desert.

    This PCA composite brings out contrasts between lithologies, structural domains, drainage patterns, and surface materials, highlighting features that are nearly invisible in standard RGB representations.

    And yes — it also happens to look stunning.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #SAR #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt #Sudan #Copernicus #CopernicusSentinel

  2. Exploring large-scale landscape structures with a simple Principal Component Analysis (PCA) applied to a MODIS composite.

    The PCA reveals striking contrasts in surface materials, vegetation patterns, and terrain transitions across western Canada — from the Rocky Mountains into the prairies and the Canadian Shield.
    Even with moderate-resolution MODIS data, spectral variability produces a surprisingly rich view of regional geography and geomorphology.

    #RemoteSensing #EarthObservation #Geology #PCA #MODIS #OpenData #GIS #QGIS #Geomorphology #Geoscience #RStats #Lithology #GeoDataArt #GeoSpectralArt #BorealForest #Taiga #Canada #Alberta

  3. Result of a Principal Component Analysis (PCA) based on combined median composites of Sentinel-1 and Sentinel-2 satellite imagery — somewhere in the desert of Sudan.

    The PCA highlights contrasts between different lithologies, structural domains, and surface materials, revealing subtle geological features that are hard to distinguish in standard RGB composites.

    And yes — it also looks simply beautiful.

    #RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAR #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt

  4. 🚨 Attn #UK #Conservation, #History, #Geology, #StoneMason, #Architecture, & #Surveyor peeps!

    Together w #BritishGeologicalSurvey, #HistoricEngland has launched a #BuildingStones #database for #England, the country's first online searchable tool featuring over 4,000 types of building stone, their uses & sources, with 45 illustrated guides to the distinctive stone buildings, geology, & #quarries that define local areas.

    #BGS #GIS #England #Heritage #Lithology #Histodon

    historicengland.org.uk/advice/

  5. Food for thought #Samples from higher #paleolatitudes were on average smaller, but contained #outliers with the largest #sizes, highlighting the need to analyze entire #distributions. #Lithology and #collection differences need to be accounted for when evaluating #size differences across #space (#polar #gigantism) and #time (#Lilliput #effect). Similarly, differences in #facies may affect #species #determination

    doi.org/10.2110/palo.2021.063

    #Paleobiology #Paleontology #Ecology #EvolutionaryBiology

  6. The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

    doi.org/10.2110/palo.2021.063

  7. The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

    doi.org/10.2110/palo.2021.063

  8. The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

    doi.org/10.2110/palo.2021.063

  9. The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

    doi.org/10.2110/palo.2021.063

  10. The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

    doi.org/10.2110/palo.2021.063