Sediment and pore water chemistry and physical oceanography of samples obtained during Baltic Sea research cruises


Autoria(s): Hartmann, Martin
Cobertura

MEDIAN LATITUDE: 56.630463 * MEDIAN LONGITUDE: 16.636887 * SOUTH-BOUND LATITUDE: 54.245044 * WEST-BOUND LONGITUDE: 10.024701 * NORTH-BOUND LATITUDE: 58.965489 * EAST-BOUND LONGITUDE: 21.155783 * DATE/TIME START: 1963-05-06T00:00:00 * DATE/TIME END: 1964-08-15T00:00:00

Data(s)

15/05/1964

Resumo

Sediment samples from approximately 40 stations in the Western, middle and eastern Baltic Sea were investigated for manganese and iron content. In a series of interstitial water samples and numerous deep and surface water samples, the manganese content was likewise determined. A strong enrichment of these elements in the basin sediments was shown. In many instances, several percent manganese were present. As a maximum value, 13% was found in a 1 mm thick layer. Furthermore, a distinct decrease in manganese content with increasing sediment depth was shown in the upper 10 to 20 cm of the Sediment at almost all stations. Both phenomena may be explained by the release of manganese from the Sediment through diffusion. In the flat parts of the Baltic and those parts having good bottom water circulation, this diffusion progresses especially vigorously as a result of a steep gradient of the Mn++ concentration in the interstitial water-deep water interface. The manganese which hereby passes into the water overlying the bottom (manganese contents between 10 and 100 y Mn/l were determined in numerous deep water samples) is partly reprecipitated on the Sediment surface, and partly carried by currents into the deeper basins where it is finallv deposited. It is bound there as a manganese-rich mixed carbonate, the composition of which can be proved chemically and by x-ray methods. Iron is likewise of higher content in the basinal sediments, however, the extent of its enrichment is far less since it is less soluble than manganese under the reducing conditions in the sediments. The fine bands of manganese- and iron-rich layers in the basin sediments may likewise be explained as a result of diffusion.

Formato

application/zip, 3 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.782536

doi:10.1594/PANGAEA.782536

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Hartmann, Martin (1964): Zur Geochemie von Mangan und Eisen in der Ostsee. Meyniana, 14, 3-20, doi:10.2312/meyniana.1964.14.3

Palavras-Chave #AD_01_1963; AD_01_1963_308; AD_01_1963_319; AD_01_1963_333; AD_01_1963_346; AD_01_1963_349; AD_01_1963_350; AD_01_1963_351; AD_01_1963_354; AD_01_1963_355; AD_01_1963_357; AD_01_1963_372; Anton Dohrn; Baltic Sea; BC; Box corer; Ca2+; Calcium; Calcium oxide; CaO; Carbon, organic, total; Chloride; Cl-; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DEPTH, water; Depth bot; Depth top; Depth water; Description; Ems1963_E10; Ems1963_E11; Ems1963_E12; Ems1963_E13; Ems1963_E14; Ems1963_E15; Ems1963_E16; Ems1963_E17; Ems1963_E18; Ems1963_E19; Ems1963_E2; Ems1963_E20; Ems1963_E21; Ems1963_E22; Ems1963_E23; Ems1963_E25; Ems1963_E26; Ems1963_E27; Ems1963_E28; Ems1963_E29; Ems1963_E3; Ems1963_E30; Ems1963_E31; Ems1963_E32; Ems1963_E33; Ems1963_E34; Ems1963_E35; Ems1963_E36; Ems1963_E4; Ems1963_E5; Ems1963_E6; Ems1963_E7; Ems1963_E8; Ems1963_E9; Event; Fe; GIK_1964_021; GIK_1964_134; Hermann Wattenberg; Iron; Label; LOI; Loss on ignition; Manganese; Manganese 2+; Mn; Mn2+; MULT; Multiple investigations; on drying (Trockenverlust); originally given in gamma/l; originally given in per mil, recaculated to %; originally given in ppm; Oste1963_16LS; Oste1963_29; Oste1963_30St; Oste1963_31St; Oste1963_32St; Oste1963_33LS; Oste1963_38; Oste1963_39; pH; Sample code/label; Titration; TOC; WA1964; WO = Oberflächenwasser (surface water), WB = Bodenwasser (bottom water); X-ray fluorescence (XRF)
Tipo

Dataset