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  • 117-722B; Accumulation rate, mass; After Bordiga et al. (2015); Age; AGE; Arabian Sea; Biogenic fragments; Braarudosphaera bigelowii; Calcidiscus leptoporus; Calcidiscus macintyrei; Calcidiscus pataecus; Calcidiscus thiersteinii; Calcidiscus tropicus; Calculated, based on the MAD dry bulk density; Calculated according to Bialik et al. (2020); Catinaster calyculus; Catinaster coalitus; Catinaster virginianus; Coccolithus miopelagicus; Coccolithus pelagicus; Coronocyclus baileyi; Coronocyclus nitescens; Cyclicargolithus floridanus; DEPTH, sediment/rock; Diatoms, centrales indeterminata; Diatoms, colonial indeterminata; Diatoms, pennales indeterminata; Diatoms, total; Discoaster bellus; Discoaster bollii; Discoaster braarudii; Discoaster brouweri; Discoaster calcaris; Discoaster challengeri; Discoaster deflandrei; Discoaster exilis; Discoaster hamatus; Discoaster kugleri; Discoaster pentaradiatus; Discoaster prepentaradiatus; Discoaster sp.; Discoaster surculus; Discoaster variabilis; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Helicosphaera ampliaperta; Helicosphaera carteri; Helicosphaera intermedia; IODP Depth Scale Terminology; Joides Resolution; Leg117; Miocene; Monsoon; Nannofossils, calcareous; Pontosphaera discopora; Pontosphaera multipora; Reticulofenestra antarctica; Reticulofenestra haqii; Reticulofenestra minuta; Reticulofenestra pseudoumbilicus; Rhabdosphaera sp.; Sample code/label; Siliceous organisms and fragments; Silicoflagellates; Sphenolithus heteromorphus; Sphenolithus moriformis; Syracosphaera sp.; Umbellosphaera sp.; Umbilicosphaera jafari; Umbilicosphaera rotula; Upwelling  (1)
  • Indian winter monsoon  (1)
Document type
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  • 1
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    Unknown
    Coastal landscape evolution in the Wilpattu National Park (NW Sri Lanka) linked to changes in sediment supply and rainfall across the Pleistocene–Holocene transition (2021)
    Details
    Publication Date: 2021-10-01
    Description: Coastal sand dunes are sediment archives which can be used to reconstruct periods of aridity and humidity, past wind strength and variations in the sediment supply related to sea-level changes. In this manner, the sedimentary record of fossil coastal dunes in Sri Lanka provides evidence for environmental and climatic changes during the late Pleistocene and Holocene. As yet, these environmental shifts are poorly resolved because the sedimentary facies and their depositional architecture have not been studied and only very few age constraints are available. Facies analysis of a lithological section at the Point Kurdimalai sea cliff in the Wilpattu National Park (NW Sri Lanka) reveals a striking resemblance to the stratigraphic succession associated with the Teri Sands in southeastern India, which is better dated. The reason is that deposition occurred under the same geological, climatic and geomorphological conditions in the two regions. This special situation allows for litho- and climate stratigraphic correlations across the Gulf of Mannar and links the landscape evolution at Point Kudrimalai to late Quaternary climatic events and sea-level changes. Our results show that the formation of red coastal dunes (Red Beds) in Sri Lanka was a multi-phase process across the Pleistocene–Holocene boundary and hence the differentiation between an Older Group of Plio-Pleistocene age (including the Red Beds) and a Younger Group of Holocene age in the Quaternary stratigraphic chart for Sri Lanka is not justified.
    Keywords: 555 ; Gulf of Mannar ; Indian winter monsoon ; palaeo-environment ; post-glacial transgression ; red coastal dunes ; sea level ; stratigraphy
    Language: English
    Type: map
    Location Call Number Limitation Availability
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    CITATION GEO-LEO
  • 2
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    Unknown
    Nannofossil abundance of ODP Hole 117-722B (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-26
    Keywords: 117-722B; Accumulation rate, mass; After Bordiga et al. (2015); Age; AGE; Arabian Sea; Biogenic fragments; Braarudosphaera bigelowii; Calcidiscus leptoporus; Calcidiscus macintyrei; Calcidiscus pataecus; Calcidiscus thiersteinii; Calcidiscus tropicus; Calculated, based on the MAD dry bulk density; Calculated according to Bialik et al. (2020); Catinaster calyculus; Catinaster coalitus; Catinaster virginianus; Coccolithus miopelagicus; Coccolithus pelagicus; Coronocyclus baileyi; Coronocyclus nitescens; Cyclicargolithus floridanus; DEPTH, sediment/rock; Diatoms, centrales indeterminata; Diatoms, colonial indeterminata; Diatoms, pennales indeterminata; Diatoms, total; Discoaster bellus; Discoaster bollii; Discoaster braarudii; Discoaster brouweri; Discoaster calcaris; Discoaster challengeri; Discoaster deflandrei; Discoaster exilis; Discoaster hamatus; Discoaster kugleri; Discoaster pentaradiatus; Discoaster prepentaradiatus; Discoaster sp.; Discoaster surculus; Discoaster variabilis; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Helicosphaera ampliaperta; Helicosphaera carteri; Helicosphaera intermedia; IODP Depth Scale Terminology; Joides Resolution; Leg117; Miocene; Monsoon; Nannofossils, calcareous; Pontosphaera discopora; Pontosphaera multipora; Reticulofenestra antarctica; Reticulofenestra haqii; Reticulofenestra minuta; Reticulofenestra pseudoumbilicus; Rhabdosphaera sp.; Sample code/label; Siliceous organisms and fragments; Silicoflagellates; Sphenolithus heteromorphus; Sphenolithus moriformis; Syracosphaera sp.; Umbellosphaera sp.; Umbilicosphaera jafari; Umbilicosphaera rotula; Upwelling
    Type: Dataset
    Format: text/tab-separated-values, 3976 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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