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  • AGE; DEPTH, sediment/rock; GC; Gravity corer; Lakshadweep Sea; MALSTROM; Sample ID; Silt, mean; SO236; SO236_52-4; Sonne  (1)
  • Abditodentrix rhomboidalis; Acostinella sp.; Adelosina cf. longirostra; Adelosina mediterranensis; Adelosina sp.; Allomorphina pacifica; Ammobaculites sp.; Amphicoryna papillosa; Amphicoryna proxima; Amphicoryna scalaris; Amphicoryna separans var. hirsuta; Amphicoryna sp.; Amphicoryna substriatula; Amphistegina lessonii; Anomalinella rostrata; Astacolus insolitus; Astrononion stelligerum; Astrononion tumidum; Bigenerina nodosaria; Bolivina earlandi; Bolivina pacifica; Bolivina spathulata; Bolivina subspinescens; Bolivina variabilis; Bolivinella elegans; Bulimina aculeata; Bulimina alazanensis; Bulimina elongata; Bulimina exilis; Bulimina marginata; Bulimina striata; Cancris auriculus; Cancris cf. oblongus; Cassidulina laevigata; Cassidulina obtusa; Cassidulinoides bradyi; Ceratocancris scaber; Chilostomella oolina; Cibicides cf. wuellerstorfi; Cibicides mabahethi; Cibicides sp.; Cibicides tabaensis; Cibicides tenuimargo; Cibicidoides bradyi; Cibicidoides cf. guazumalensis; Cibicidoides cf. robertsonianus; Cibicidoides cicatricosus; Cibicidoides mundulus; Cibicidoides sp.; Cibicidoides subhaidingerii; Cornuloculina inconstans; Cornuspira carinata; Cornuspira planorbis; Counting 〉125 µm fraction; Cribrononion kerguelenense; Cushmanina feildeniana; Cushmanina plumigera; Cylindroclavulina bradyi; Cymbaloporetta bradyi; Cymbaloporetta sp.; Cymbaloporetta squammosa; Cymbaloporetta tabellaeformis; Dentalina albatrossi; Dentalina bradyensis; Dentalina catenulata; Dentalina cf. flintii; DEPTH, sediment/rock; Dimorphina cf. tuberosa; Discanomalina coronata; Discorbinella araucana; Discorbinella bertheloti; Discorbis sp.; Dorothia bradyana; Dorothia goesi; Dry mass; Eggerella bradyi; Ellipsoglandulina laevigata; Ellipsoglandulina sp.; Elphidium cf. incertum; Elphidium cf. marcellum; Elphidium sp.; Epistominella vitrea; Eponides repandus; Eponides sp.; Evolvocassidulina tenuis; Favulina squamosa; Fijiella simplex; Fissurina bradii; Fissurina cf. clathrata; Fissurina cf. radiata; Fissurina circularis; Fissurina incomposita; Fissurina lacunata; Fissurina pacifica; Fissurina sp.; Foraminifera, benthic; Foraminifera, benthic indeterminata; Fursenkoina mexicana; Gaudryina arenaria; Gavelinopsis lobatulus; Gavelinopsis translucens; GC; Globobulimina affinis; Globobulimina pacifica; Globobulimina pseudospinescens; Globocassidulina oblonga; Globocassidulina pacifica; Globocassidulina subglobosa; Globulina sp.; Gravity corer; Grigelis guttifera; Guttulina cf. ovata; Gyroidina umbonata; Gyroidinoides cf. globosus; Gyroidinoides neosoldanii; Heterolepa dutemplei; Heterolepa praecincta; Hoeglundina elegans; Hoeglundina neocarinata; Hyalinea inflata; Laevidentalina ariena; Laevidentalina filiformis; Laevidentalina sp.; Laevidentalina subsoluta; Lagena aspera var. crispata; Lagena cf. semistriata; Lagena hispida; Lagena meridionalis; Lagena semistriata; Lagena sp.; Lagena striata; Lagena sulcata; Lakshadweep Sea; Lenticulina calcar; Lenticulina cf. formosa; Lenticulina cf. gibba; Lenticulina cf. vortex; Lenticulina echinata; Lenticulina formosa; Lenticulina gibba; Lenticulina pliocaena; Lenticulina serpens; Lenticulina sp.; Lenticulina thalmanni; MALSTROM; Marginulinopsis striatulus; Marginulinopsis tenuis; Martinottiella communis; Massilina amygdaloides; Melonis barleeanus; Miliolinella subrotunda; Neoconorbina terquemi; Neoeponides schreibersii; Neolenticulina occidentalis; Neolenticulina variabilis; Neouvigerina interrupta; Neouvigerina porrecta; Neouvigerina proboscidea; Nonionella sp.; Nonionoides grateloupii; Oolina globosa; Oolina stelligera; Oridorsalis umbonatus; Patellinella inconspicua; Planularia cf. australis; Plotnikovina timorea; Polymorphina spp.; Procerolagena gracillima; Procerolagena sp.; Proemassilina arenaria; Pseudoclavulina serventyi; Pseudonodosaria discreta; Pseudotriloculina cf. granulocostata; Pullenia bulloides; Pullenia cf. quinqueloba; Pullenia salisburyi; Pullenia subcarinata; Pyrgo cf. denticulata; Pyrgoella sphaera; Pyrgo inornata; Pyrgo laevis; Pyrgo lucernula; Pyrgo murrhina; Pyrgo oblonga; Quinqueloculina cf. pseudobuchiana; Quinqueloculina cf. tropicalis; Quinqueloculina cf. viennensis; Quinqueloculina padana; Quinqueloculina pygmaea; Quinqueloculina seminulum; Quinqueloculina spp.; Reophax cf. agglutinatus; Reophax sp.; Reussella sp.; Reussella spinulosa; Rhizammina sp.; Robertina subcylindrica; Robertina tasmanica; Robertinoides bradyi; Rosalina globularis; Rosalina vilardeboana; Sahulia kerimbaensis; Saracenaria altifrons; Saracenaria italica; Saracenaria sp.; Sigmavirgulina tortuosa; Sigmoilina obesa; Sigmoilina sigmoidea; Siphogenerina columellaris; Siphogenerina pacifica; Siphonina bradyana; Siphotextularia cf. mestayerae; Siphotextularia flintii; Siphotextularia foliosa; Siphotextularia rolshauseni; Siphouvigerina ampullacea; SO236; SO236_52-4; Sonne; Sphaeroidina bulloides; Spiroloculina cf. communis; Spiroloculina rotunda; Spiroloculina sp.; Spiroloculina tenuiseptata; Spirophthalmidium acutimargo; Spiroplectinella sagittula; Spiroplectinella sp.; Spirosigmoilina bradyi; Spirosigmoilina tenuis; Spirotextularia floridana; Split; Testulosiphon indivisus; Textularia calva; Textularia pala; Textularia pseudogramen; Tretomphaloides concinnus; Trifarina angulosa; Trifarina bradyi; Trifarina carinata; Trifarina lepida; Triloculina sp.; Triloculina tricarinata; Triloculina trigonula; Trochamminella sp.; Uvigerina aculeata; Uvigerina cf. flinti; Uvigerina schwageri; Uvigerina semiornata; Vaginulina bradyi; Vaginulina legumen; Vaginulinopsis sp.; Vaginulinopsis sublegumen; Vaginulinopsis tasmanica; Valvulineria laevigata; Valvulineria minuta; Valvulineria rugosa  (1)
  • Alkalinity, total; DATE/TIME; Fluorescence; Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; MASACARA; MASCARA; Oxygen; Oxygen optode, Aanderaa type 3835; RV Sonne cruise SO270; Salinity; Saya de Malha Bank; SO270; SO270_0_Underway; Sonne_2; SUNDANS; Temperature, water; UMS; Underway, multiple sensors; VINDTA 3C for AT and Dissolved Inorganic Carbon measurement  (1)
  • GC; Gravity corer; Lakshadweep Sea; MALSTROM; SO236; SO236_52-4; Sonne  (1)
  • Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP  (1)
Document type
Keywords
Publisher
Years
  • 1
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    Non-destructive core scanning Composition of lithogenic fraction Orbital cycles Indian-Asian history of aridity Mid Pleistocene transition from IODP Hole359-U1467 (2019)
    PANGAEA
    In:  Supplement to: Kunkelova, Tereza; Jung, Simon J A; de Leau, Erica S; Odling, Nick; Thomas, Alex L; Betzler, Christian; Eberli, Gregor P; Alvarez-Zarikian, Carlos A; Alonso-Garcia, Montserrat; Bialik, Or M; Blättler, Clara L; Guo, Junhua Adam; Haffen, Sébastien; Horozal, Senay; Mee, Laurence; Inoue, Mayuri; Jovane, Luigi; Lanci, Luca; Laya, Juan Carlos; Lüdmann, Thomas; Bejugam, Nagender N; Nakakuni, Masatoshi; Niino, Hiroshi; Petruny, Loren M; Pratiwi, Santi D; Reijmer, John J G; Reolid, Jesus; Slagle, Angela L; Sloss, Craig; Su, Xiang; Swart, Peter K; Wright, James D; Yao, Zhengquan; Young, J R; Lindhorst, Sebastian; Stainbank, Stephanie; Rueggeberg, Andres; Spezzaferri, Silvia; Carrasqueira, Igor; Yu, Siyao M; Kroon, Dick (2018): A two million year record of low-latitude aridity linked to continental weathering from the Maldives. Progress in Earth and Planetary Science, 5(1), https://doi.org/10.1186/s40645-018-0238-x
    Details
    Publication Date: 2024-04-26
    Description: Indian-Asian monsoon has oscillated between warm/wet interglacial periods and cool/dry glacial periods with periodicities closely linked to variations in Earth's orbital parameters. However, processes that control wet versus dry, i.e. aridity cyclical periods on the orbital time-scale in the low latitudes of the Indian-Asian continent remain poorly understood because records over millions of years are scarce. The sedimentary record from International Ocean Discovery Program (IODP) Expedition 359 provides a well-preserved, high-resolution, continuous archive of lithogenic input from the Maldives reflecting on low-latitude aridity cycles. Variability within the lithogenic component of sedimentary deposits of the Maldives results from changes in monsoon-controlled sedimentary sources. Here, we present X-ray fluorescence (XRF) core-scanning results from IODP Site U1467 for the past two million years, allowing full investigation of orbital periodicities. We specifically use the Fe/K as a terrestrial climate proxy reflecting on wet versus dry conditions in the source areas of the Indian-Asian landmass, or from further afield. The Fe/K record shows orbitally forced cycles reflecting on changes in the relative importance of aeolian (stronger winter monsoon) during glacial periods versus fluvial supply (stronger summer monsoon) during interglacial periods. For our chronology, we tuned the Fe/K cycles to precessional insolation changes, linking Fe/K maxima/minima to insolation minima/maxima with zero phase lag. Wavelet and spectral analyses of the Fe/K record show increased dominance of the 100 kyr cycles after the Mid Pleistocene Transition (MPT) at 1.25 Ma in tandem with the global ice volume benthic δ18O data (LR04 record). In contrast to the LR04 record, the Fe/K profile resolves 100-kyr-like cycles around the 130 kyr frequency band in the interval from 1.25 to 2 million years. These 100-kyr-like cycles likely form by bundling of two or three obliquity cycles, indicating that low-latitude Indian-Asian climate variability reflects on increased tilt sensitivity to regional eccentricity insolation changes (pacing tilt cycles) prior to the MPT. The implication of appearance of the 100 kyr cycles in the LR04 and the Fe/K records since the MPT suggests strengthening of a climate link between the low and high latitudes during this period of climate transition.
    Keywords: Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Benthic foraminifera census counts and compilation of the isotope, grain size, TOC, CaCO3 and XRF data records of sediment core SO236_052-4 (2017)
    PANGAEA
    In:  Supplement to: Bunzel, Dorothea; Schmiedl, Gerhard; Lindhorst, Sebastian; Mackensen, Andreas; Reolid, Jesus; Romahn, Sarah; Betzler, Christian (2017): A multi-proxy analysis of Late Quaternary ocean and climate variability for the Maldives, Inner Sea. Climate of the Past, 13(12), 1791-1813, https://doi.org/10.5194/cp-13-1791-2017
    Details
    Publication Date: 2024-06-26
    Description: As a natural sediment trap, marine sediments of the sheltered central part of the Maldives Inner Sea represent an exceptional archive for paleoenvironmental and climate changes of the equatorial Indian Ocean. To evaluate the complex interplay between high-latitude and monsoonal climate variability, related dust fluxes, and regional oceanographic responses, we focused on Fe/Al, Ti/Al and Si/Ca ratios as proxies for terrigenous sediment delivery, and total organic carbon (TOC) and Br XRF counts as proxies for marine productivity. Benthic foraminiferal fauna distributions, grain size, and stable d18O and d13C data were used for evaluating changes in the benthic ecosystem, as well as changes in the intermediate water circulation, bottom water current velocity and oxygenation. Our multi-proxy data record reveals an enhanced dust supply during the glacial intervals, causing elevated Fe/Al and Si/Ca ratios, an overall coarsening of the sediment and an increasing amount of agglutinated benthic foraminifera. The enhanced dust fluxes can be attributed to higher dust availability in the Asian desert and loess areas and its transport by intensified winter monsoon winds during glacial conditions. These combined effects of wind-induced mixing of surface waters and dust fertilisation during the cold phases resulted in an increased surface-water productivity and related organic carbon fluxes. Thus, the development of highly diverse benthic foraminiferal faunas with certain detritus and suspension feeders were fostered. The difference in the d13C signal between epifaunal and deep infaunal benthic foraminifera reveals intermediate water oxygen concentrations between approximately 40 and 100 µmol kg-1 during this time. The precessional fluctuation pattern of oxygen changes resembles that from the deep Arabian Sea, suggesting an expansion of the Oxygen Minimum Zone (OMZ) from the Arabian Sea into the tropical Indian Ocean with a probable regional signal of strengthened winter-monsoon-induced organic matter fluxes and oxygen consumption, and further controlled by the varying inflow intensity of the Antarctic Intermediate Water (AAIW). In addition, the bottom water oxygenation pattern of the Maldives Inner Sea reveals a long phase of reduced ventilation during the last glacial period. This process is likely linked to the combined effects of generally enhanced oxygen consumption rates during high-productivity phases, reduced AAIW production, and the restriction of upper bathyal environments of the Inner Sea during sea-level lowstands. Thus, our multi-proxy record reflects a close linkage between the Indian monsoon oscillation, intermediate water circulation, productivity and sea-level changes on orbital time-scale.
    Keywords: GC; Gravity corer; Lakshadweep Sea; MALSTROM; SO236; SO236_52-4; Sonne
    Type: Dataset
    Format: application/zip, 8 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Benthic foraminifera counts of sediment core SO236_52-4 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Keywords: Abditodentrix rhomboidalis; Acostinella sp.; Adelosina cf. longirostra; Adelosina mediterranensis; Adelosina sp.; Allomorphina pacifica; Ammobaculites sp.; Amphicoryna papillosa; Amphicoryna proxima; Amphicoryna scalaris; Amphicoryna separans var. hirsuta; Amphicoryna sp.; Amphicoryna substriatula; Amphistegina lessonii; Anomalinella rostrata; Astacolus insolitus; Astrononion stelligerum; Astrononion tumidum; Bigenerina nodosaria; Bolivina earlandi; Bolivina pacifica; Bolivina spathulata; Bolivina subspinescens; Bolivina variabilis; Bolivinella elegans; Bulimina aculeata; Bulimina alazanensis; Bulimina elongata; Bulimina exilis; Bulimina marginata; Bulimina striata; Cancris auriculus; Cancris cf. oblongus; Cassidulina laevigata; Cassidulina obtusa; Cassidulinoides bradyi; Ceratocancris scaber; Chilostomella oolina; Cibicides cf. wuellerstorfi; Cibicides mabahethi; Cibicides sp.; Cibicides tabaensis; Cibicides tenuimargo; Cibicidoides bradyi; Cibicidoides cf. guazumalensis; Cibicidoides cf. robertsonianus; Cibicidoides cicatricosus; Cibicidoides mundulus; Cibicidoides sp.; Cibicidoides subhaidingerii; Cornuloculina inconstans; Cornuspira carinata; Cornuspira planorbis; Counting 〉125 µm fraction; Cribrononion kerguelenense; Cushmanina feildeniana; Cushmanina plumigera; Cylindroclavulina bradyi; Cymbaloporetta bradyi; Cymbaloporetta sp.; Cymbaloporetta squammosa; Cymbaloporetta tabellaeformis; Dentalina albatrossi; Dentalina bradyensis; Dentalina catenulata; Dentalina cf. flintii; DEPTH, sediment/rock; Dimorphina cf. tuberosa; Discanomalina coronata; Discorbinella araucana; Discorbinella bertheloti; Discorbis sp.; Dorothia bradyana; Dorothia goesi; Dry mass; Eggerella bradyi; Ellipsoglandulina laevigata; Ellipsoglandulina sp.; Elphidium cf. incertum; Elphidium cf. marcellum; Elphidium sp.; Epistominella vitrea; Eponides repandus; Eponides sp.; Evolvocassidulina tenuis; Favulina squamosa; Fijiella simplex; Fissurina bradii; Fissurina cf. clathrata; Fissurina cf. radiata; Fissurina circularis; Fissurina incomposita; Fissurina lacunata; Fissurina pacifica; Fissurina sp.; Foraminifera, benthic; Foraminifera, benthic indeterminata; Fursenkoina mexicana; Gaudryina arenaria; Gavelinopsis lobatulus; Gavelinopsis translucens; GC; Globobulimina affinis; Globobulimina pacifica; Globobulimina pseudospinescens; Globocassidulina oblonga; Globocassidulina pacifica; Globocassidulina subglobosa; Globulina sp.; Gravity corer; Grigelis guttifera; Guttulina cf. ovata; Gyroidina umbonata; Gyroidinoides cf. globosus; Gyroidinoides neosoldanii; Heterolepa dutemplei; Heterolepa praecincta; Hoeglundina elegans; Hoeglundina neocarinata; Hyalinea inflata; Laevidentalina ariena; Laevidentalina filiformis; Laevidentalina sp.; Laevidentalina subsoluta; Lagena aspera var. crispata; Lagena cf. semistriata; Lagena hispida; Lagena meridionalis; Lagena semistriata; Lagena sp.; Lagena striata; Lagena sulcata; Lakshadweep Sea; Lenticulina calcar; Lenticulina cf. formosa; Lenticulina cf. gibba; Lenticulina cf. vortex; Lenticulina echinata; Lenticulina formosa; Lenticulina gibba; Lenticulina pliocaena; Lenticulina serpens; Lenticulina sp.; Lenticulina thalmanni; MALSTROM; Marginulinopsis striatulus; Marginulinopsis tenuis; Martinottiella communis; Massilina amygdaloides; Melonis barleeanus; Miliolinella subrotunda; Neoconorbina terquemi; Neoeponides schreibersii; Neolenticulina occidentalis; Neolenticulina variabilis; Neouvigerina interrupta; Neouvigerina porrecta; Neouvigerina proboscidea; Nonionella sp.; Nonionoides grateloupii; Oolina globosa; Oolina stelligera; Oridorsalis umbonatus; Patellinella inconspicua; Planularia cf. australis; Plotnikovina timorea; Polymorphina spp.; Procerolagena gracillima; Procerolagena sp.; Proemassilina arenaria; Pseudoclavulina serventyi; Pseudonodosaria discreta; Pseudotriloculina cf. granulocostata; Pullenia bulloides; Pullenia cf. quinqueloba; Pullenia salisburyi; Pullenia subcarinata; Pyrgo cf. denticulata; Pyrgoella sphaera; Pyrgo inornata; Pyrgo laevis; Pyrgo lucernula; Pyrgo murrhina; Pyrgo oblonga; Quinqueloculina cf. pseudobuchiana; Quinqueloculina cf. tropicalis; Quinqueloculina cf. viennensis; Quinqueloculina padana; Quinqueloculina pygmaea; Quinqueloculina seminulum; Quinqueloculina spp.; Reophax cf. agglutinatus; Reophax sp.; Reussella sp.; Reussella spinulosa; Rhizammina sp.; Robertina subcylindrica; Robertina tasmanica; Robertinoides bradyi; Rosalina globularis; Rosalina vilardeboana; Sahulia kerimbaensis; Saracenaria altifrons; Saracenaria italica; Saracenaria sp.; Sigmavirgulina tortuosa; Sigmoilina obesa; Sigmoilina sigmoidea; Siphogenerina columellaris; Siphogenerina pacifica; Siphonina bradyana; Siphotextularia cf. mestayerae; Siphotextularia flintii; Siphotextularia foliosa; Siphotextularia rolshauseni; Siphouvigerina ampullacea; SO236; SO236_52-4; Sonne; Sphaeroidina bulloides; Spiroloculina cf. communis; Spiroloculina rotunda; Spiroloculina sp.; Spiroloculina tenuiseptata; Spirophthalmidium acutimargo; Spiroplectinella sagittula; Spiroplectinella sp.; Spirosigmoilina bradyi; Spirosigmoilina tenuis; Spirotextularia floridana; Split; Testulosiphon indivisus; Textularia calva; Textularia pala; Textularia pseudogramen; Tretomphaloides concinnus; Trifarina angulosa; Trifarina bradyi; Trifarina carinata; Trifarina lepida; Triloculina sp.; Triloculina tricarinata; Triloculina trigonula; Trochamminella sp.; Uvigerina aculeata; Uvigerina cf. flinti; Uvigerina schwageri; Uvigerina semiornata; Vaginulina bradyi; Vaginulina legumen; Vaginulinopsis sp.; Vaginulinopsis sublegumen; Vaginulinopsis tasmanica; Valvulineria laevigata; Valvulineria minuta; Valvulineria rugosa
    Type: Dataset
    Format: text/tab-separated-values, 15137 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    SUNDANS underway data from SONNE cruise SO270 (2022)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Keywords: Alkalinity, total; DATE/TIME; Fluorescence; Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; MASACARA; MASCARA; Oxygen; Oxygen optode, Aanderaa type 3835; RV Sonne cruise SO270; Salinity; Saya de Malha Bank; SO270; SO270_0_Underway; Sonne_2; SUNDANS; Temperature, water; UMS; Underway, multiple sensors; VINDTA 3C for AT and Dissolved Inorganic Carbon measurement
    Type: Dataset
    Format: text/tab-separated-values, 247218 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Sortable silt of sediment core SO236_52-4 (2017)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Keywords: AGE; DEPTH, sediment/rock; GC; Gravity corer; Lakshadweep Sea; MALSTROM; Sample ID; Silt, mean; SO236; SO236_52-4; Sonne
    Type: Dataset
    Format: text/tab-separated-values, 234 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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