Accumulation of Organic Carbon in Marine Sediments: Results by Ruediger Stein

Posted by

By Ruediger Stein

This research of natural carbon accumulation in marine environments starts with a assessment of mechanisms controlling natural carbon deposition, focusing on effects from expeditions into Baffin Bay and the Labrador Sea, in addition to the ocean of Japan and the northwest coast of Africa. significant items of the learn have been the reconstruction of adjustments in palaeoceanic variables and the background of palaeoclimates in numerous environments. The participants additionally constructed extra basic types for natural carbon accumulation and in comparison organic-carbon features derived from varied analytical strategies that allows you to achieve the best-fitting interpretation version.

Show description

Read Online or Download Accumulation of Organic Carbon in Marine Sediments: Results from the Deep Sea Drilling Project/Ocean Drilling Program (DSDP/ODP) (Lecture Notes in Earth Sciences) PDF

Best organic books

Organic Solid-State Reactions

Such a lot natural reactions have lengthy been conducted in natural solvents with no drawback for his or her actual necessity, response potency, and pollutants difficulties. Very lately, we have now discovered that almost all natural reactions should be performed within the absence of a solvent, particularly, within the sturdy nation. in lots of situations, the solid-state response proceeds extra simply and successfully, or even extra selectively than answer response.

Organic Thin Films and Surfaces: Directions for The Nineties: Directions for the Nineties: 20

Physics of skinny motion pictures has been one of many longest operating carrying on with sequence in skinny movie technology which includes 20 volumes considering that 1963. The sequence includes many of the very best quality reports of the homes ofvarious skinny motion pictures fabrics and platforms. which will be capable to mirror the advance of todays technological know-how and to hide all sleek facets of skinny motion pictures, the sequence, starting with quantity 20, will stream past the elemental physics of skinny motion pictures.

Additional resources for Accumulation of Organic Carbon in Marine Sediments: Results from the Deep Sea Drilling Project/Ocean Drilling Program (DSDP/ODP) (Lecture Notes in Earth Sciences)

Example text

In this way, elevated quantities of (hydrogen-rich) organic matter can also be preserved in an oxygen-rich open-marine environment (cf. , 1984). 3. Supply of terrigenous organic carbon The annual supply of terrigenous organic carbon to the world ocean is small in comparison to the amount of organic carbon produced by marine organisms (Romankevich, 1984). , Degens and Mopper, 1976). Furthermore, about 35 % of the riverine organic matter (about 81 x 106t Corg y-l) belongs to the labile (metabolizable) fraction and may become oxidized already in estuaries and near-shore environments, whereas the other 65% (about 150 x 106t Corg y-l) appears to be highly refractory and may be transported further offshore (Ittekott, 1988).

6) Calculation of accumulation rates Since changes in organic carbon concentrations can result from changes in both mineral components and organic carbon content, the percentage values were transformed into mass accumulation rates, following van Andel et al. , organic carbon). , gC cm"2 ky'l), dilution effects by mineral components can be excluded. 2. Comparison of organic matter characteristics derived from different techniques The use of a single method for determining the organic carbon composition may yield results which can be interpreted in different ways.

MARINE ORGANIC MATTER (%) 100 1000 80 . 60 , 40 20 0 80 100 500 X ILl r~ _z z LU 100 0 rr Q >I 50 ! i = 1 I 101 0 20 I, 40 60 TERRIGENOUS ORGANIC MATTER Fig. , 1986). Data from Sites 645 and 658 are plotted into the correlation lines. /. % 200' w ,,,, ,,,,,,,,,,,,,,,,,, 100' O~ 0 [] SITE645 100 200 300 400 500 600 700 HYDROGENINDEX (BULK SEDIMENT) Fig. 24: Correlation between hydrogen indices measured on bulk sediment samples and hydrogen indices (mgHC/gC) measured on kerogen concentrates. T/. --ir~.

Download PDF sample

Rated 4.37 of 5 – based on 9 votes