ORIGIN, DISTRIBUTION AND ACCUMULATION OF ORGANIC-CARBON IN THE SKAGERRAK

被引:32
作者
ANTON, KK [1 ]
LIEBEZEIT, G [1 ]
RUDOLPH, C [1 ]
WIRTH, H [1 ]
机构
[1] INST BOGEOCHEM,W-2000 HAMBURG 13,GERMANY
关键词
D O I
10.1016/0025-3227(93)90136-J
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Organic carbon contents have been determined in grain-size fractions of sediments from the Skagerrak southern slope and basin. C(ORG) concentrations were generally inversely related to grain size. The > 63 mum fraction in surface sediments from deeper waters had higher contents attributable to agglutination of fine material by tube forming benthic organisms. Especially in the clay and fine silt fractions C(ORG) increased with increasing fraction content presumably as a result of higher ''grazing pressure'' on fine material in coarse sediments. A comparison of high resolution age (Pb-210), porosity and grain-size composition profiles indicates that deviations in the Pb-210 curves are due both to bioturbation and sedimentation events. Porosity profiles also show high regional variability on a small scale. When primary production, C(ORG) vertical fluxes and accumulation rates are compared an excess of organic carbon stored in Skagerrak sediments becomes apparent. Potential sources for this carbon such as river input, dumping or sea-floor erosion are examined.
引用
收藏
页码:287 / 297
页数:11
相关论文
共 40 条
  • [1] AERTJEBERGNIELS, 1981, BELT PROJECT EVALUAT
  • [2] ANTON KK, 1988, THESIS U HAMBURG
  • [3] SKAGERRAK (NORTHEASTERN NORTH-SEA) OXYGEN MICROPROFILES AND POREWATER CHEMISTRY IN SEDIMENTS
    BAKKER, JF
    HELDER, W
    [J]. MARINE GEOLOGY, 1993, 111 (3-4) : 299 - 321
  • [4] PRIMARY PRODUCTIVITY AND PARTICLE FLUXES ON A TRANSECT OF THE EQUATOR AT 153-DEGREES-W IN THE PACIFIC-OCEAN
    BETZER, PR
    SHOWERS, WJ
    LAWS, EA
    WINN, CD
    DITULLIO, GR
    KROOPNICK, PM
    [J]. DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1984, 31 (01): : 1 - 11
  • [5] COMBAZ A, 1907, GEOCHIMIE ORGANIQUE, P139
  • [6] EISMA D, 1982, MITTEILUNGEN GEOLOGI, V52, P483
  • [7] Eisma D., 1981, SPEC, V5, P415
  • [8] PARTICULATE ORGANIC-MATTER FLUX AND PLANKTONIC NEW PRODUCTION IN THE DEEP OCEAN
    EPPLEY, RW
    PETERSON, BJ
    [J]. NATURE, 1979, 282 (5740) : 677 - 680
  • [9] RAPID METHOD FOR SOURCE ROCKS CHARACTERIZATION AND FOR DETERMINATION OF PETROLEUM POTENTIAL AND DEGREE OF EVOLUTION
    ESPITALIE, J
    LAPORTE, JL
    MADEC, M
    MARQUIS, F
    LEPLAT, P
    PAULET, J
    BOUTEFEU, A
    [J]. REVUE DE L INSTITUT FRANCAIS DU PETROLE, 1977, 32 (01): : 23 - 42
  • [10] FENGLER G, 1989, HUMINSTOFFE HOLOZANE