Fluor and opal in surface sediment from the Bransfield Strait (Table 1)

• Main Authors: Matthies, Dietmar, Troll, Georg
• Format: Dataset
• Language: English
• Published: PANGAEA 1987
• Subjects: ANT-II/3; AWI_Paleo; Bransfield Strait; DEPTH; sediment/rock; Elephant Island; Elevation of event; Event label; Fluorine; Giant box corer; GKG; Gravity corer (Kiel type); Joinville Island; KAL; Kasten corer; King George Island; Antarctic Peninsula; Latitude of event; Lithogenic material; Longitude of event; Low Island; Opal; biogenic silica; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Powell Basin; PS04; PS04/225; PS04/228; PS04/234; PS04/235; PS04/236; PS04/254; PS04/255; PS04/256; PS04/257; PS04/258; PS04/260; PS04/261; PS04/263; PS04/264; PS04/265; PS04/266; PS04/267; PS04/268; PS04/269; PS04/270; PS04/271; PS04/273; PS04/274; Antarctic; The Antarctic; Weddell Sea; Weddell; Joinville; South Orkney Plateau; Antarc*; Polarforschung
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.51463; https://doi.org/10.1594/PANGAEA.51463

The influence of biogenic opal sediment input (mainly diatom skeletons) on the fluorine budget of marine sediments will be shown for 24 sampling stations of the antarctic regions of Bransfield Strait, Powell Basin, South Orkney Plateau and northwestern Weddell Sea. 4 bulk samples, one from each sedimentation area, contain 9 to 28 wt.-% of biogenic opal , the clay fraction of the 24 samples investigated have 2 to 82 wt.-%. The fluorine concentration in the amorphous biogenic component is 15 ppm. 300 to 800 ppm of fluorine were measured in the clay fractions, 330 to 920 ppm in their lithogenic components. Biogenic opal causes a decrease in fluorine concentration of the sediment by a considerable amount: 6 to 56 % relative to the clay fraction, due to the proportions involved. Biogenic opal is therefore taken into account as a 'diluting' factor for the fluorine budget in marine sediments.