Macerals in surface sediments of the Laptev Sea (Arctic Ocean), supplement to: Boucsein, Bettina; Stein, Ruediger (2000): Particulate organic matter in surface sediments of the Laptev Sea (Arctic Ocean): application of maceral analysis as organic-carbon-source indicator. Marine Geology, 162(2-4), 573-586

Surface sediments from the Laptev Sea and adjacent continental slope were studied for their composition of particulate organic matter (OM) by means of maceral analysis. The composition of macerals in sediments gives information about the environment, terrigenous supply from the hinterland, and marin...

Full description

Bibliographic Details
Main Authors: Boucsein, Bettina, Stein, Ruediger
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 1999
Subjects:
Event label
Latitude of event
Longitude of event
Elevation of event
DEPTH, sediment/rock
Huminite
Textinite
Vitrinite
Inertinite
Terrigenous
Sporinite
Cutinite
Liptinite, terrigenous
Liptinite
Coal clasts or fragments
Alginite, freshwater
Liptodetrinite
Alginite
Dinoflagellate cyst
Maceral, terrigenous
Maceral, mixed
Maceral, marine
Box corer Reineck
Giant box corer
Fluorescent microscope
Transdrift-I
ARK-IX/4
Ivan Kireyev
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Quaternary Environment of the Eurasian North QUEEN
Arctic
Arctic Ocean
Laptev Sea
New Siberian Islands
laptev
Phytoplankton
Online Access:https://dx.doi.org/10.1594/pangaea.55417
https://doi.pangaea.de/10.1594/PANGAEA.55417
Description
Summary:Surface sediments from the Laptev Sea and adjacent continental slope were studied for their composition of particulate organic matter (OM) by means of maceral analysis. The composition of macerals in sediments gives information about the environment, terrigenous supply from the hinterland, and marine OM. With reference to their biological sources, we distinguish between terrigenous and marine macerals. We found that the particulate OM in the surface sediments of the Laptev Sea is predominantly of terrigenous origin (mean: 78%). However, distinct variations exist when looking in detail. In the shelf area, sediments may contain up to 99% terrigenous OM. Freshwater algae occur directly north of the river mouths, reflecting the strong fluvial influence. Relatively high amounts of marine OM (20-40%) are restricted to the upper continental slope, the Vilkitsky Strait and west of the New Siberian Islands, explained by increased surface-water productivity due to increased fluvial nutrient supply, open-water conditions, and phytoplankton blooms at the ice-edge.

Similar Items