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Bibliographic Details
Main Author: Kaczmarska, Irena
Format: Dataset Open Access
Language:en
Published: PANGAEA 1990
Subjects:
116-717A; 116-717B; 116-717C; Achnanthes lanceolata; Actinocyclus ehrenbergii; Actinocyclus ehrenbergii sparsa; Actinocyclus ehrenbergii var. tenella; Actinocyclus ellipticus; Actinocyclus ellipticus forma lanceolata; Actinocyclus grinnensis; Actinocyclus normanii forma subsalsa; Actinoptychus senarius; Actinoptychus senarius minor; Actinoptychus splendens; Actinoptychus vulgaris; Azpeitia africana; Azpeitia nodulifera; Bacteriastrum comosum; Biddulphia tuomeyi; Cerataulina bicornis; Chaetoceros furcatus; Chaetoceros mitra; Coscinodiscus argus; Coscinodiscus curvatus; Coscinodiscus curvatus var. minor; Coscinodiscus fimbriatus; Coscinodiscus lineatus ellipticus; Coscinodiscus nitidus; Coscinodiscus symbolophorus; Coscinodiscus temperei; Cyclotella stylorum; Cymbella affinis; Diploneis bombus; Diploneis smithii; Diploneis sp.; Diploneis weissflogii; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epithemia adnata var. proboscioidea; Epithemia turgida; Ethmodiscus gazellae; Ethmodiscus rex; Event label; Gomphonema parvulum var. micropus; Grammatophora undulata; Hemidiscus cuneiformis; Hyalodiscus radiatus; Joides Resolution; Leg116; Leptocylindrus danicus; Melosira granulata; Navicula hennedyi; Nitzschia marina; Ocean Drilling Program; ODP; Paralia sulcata; Pinnularia borealis; Podosira stelliger; Pterotheca reticulata; Rhaphoneis amphiceros var. geminifera; Rhaphoneis surirella; Rhizosolenia bergonii; Rhizosolenia hebetata; Rhizosolenia hebetata forma subacuta; Rhizosolenia hebetata var. semispina; Rhizosolenia praebergonii robusta; Rhopalodia gibba; Roperia tesselata; Sample code/label; Schimperiella antarctica; South Indian Ridge, South Indian Ocean; Stephanodiscus turris; Synedra ulna; Thalassionema nitzschioides; Thalassionema nitzschioides var. parva; Thalassiosira eccentrica; Thalassiosira leptopus; Thalassiosira oestrupii; Thalassiosira oestrupii var. venrickae; Thalassiosira plicata; Thalassiothrix fraudenfeldii; Thalassiothrix longissima; Trachyneis aspera; Triceratium dubium; Triceratium favus; Xanthiopyxis bipolaris; Xanthiopyxis diaphana; Xanthiopyxis oblonga
Online Access:https://doi.org/10.1594/PANGAEA.728318
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Table of Contents:
  • Autochthonous marine pelagic and allochthonous coastal and freshwater diatoms were encountered in five samples from the Ocean Drilling Program (ODP) Leg 116 Holes 717A, 717B, and 717C. Allochthonous diatoms were transported to the equatorial Indian Ocean from inland locations and coastal waters, respectively. The pelagic diatom assemblage consists mainly of warm and/or tropical diatoms known from the Neogene to Holocene. A stratigraphic marker, Rhizosolenia praebergonii var. robusta, which indicates Pliocene-Pleistocene (2.4-1.55 Ma) age of the sediments, was present in the samples from Core 116-717C-27X. Species composition of the whole assemblage is most similar to the tropical Indian Ocean Diatom Zone 6 of Schrader and supports an estimated age of 1.8-2.1 Ma for the sediments.

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