(Table 1) Total organic carbon, calcium carbonate and nitrogen at DSDP Holes 80-559 and 80-550B

Concentrations of organic and inorganic nitrogen have been measured on Leg 80 sediments. The inorganic nitrogen content is relatively constant, 0.02-0.03 wt.%. Because most of the inorganic nitrogen occurs as NH3 or (NH4)+ fixed on clays, clay-poor sediments have lower inorganic nitrogen contents. O...

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Bibliographic Details
Main Author: Waples, Douglas W
Format: Dataset
Language:English
Published: PANGAEA 1985
Subjects:
80-549
80-550B
Calcium carbonate
Calculated
Carbon
organic
total
Carbonate bomb (Müller & Gastner
1971)
Deep Sea Drilling Project
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Element analyzer CHN (Hewlett-Packard 185-B)
Event label
Glomar Challenger
Leg80
Nitrogen
inorganic
North Atlantic/PLAIN
North Atlantic/SPUR
Sample code/label
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.808054
https://doi.org/10.1594/PANGAEA.808054
Description
Summary:Concentrations of organic and inorganic nitrogen have been measured on Leg 80 sediments. The inorganic nitrogen content is relatively constant, 0.02-0.03 wt.%. Because most of the inorganic nitrogen occurs as NH3 or (NH4)+ fixed on clays, clay-poor sediments have lower inorganic nitrogen contents. Organic nitrogen content depends upon both the type and the quantity of organic matter present. In Leg 80 sediments, woody kerogens contain much less organic nitrogen than do kerogens of algal origin. Furthermore, pelagic samples of low organic carbon content have less organic nitrogen than predicted, because of loss during diagenesis. DSDP shipboard analytical procedures do not distinguish between organic and inorganic nitrogen. Great caution must therefore be exercised in interpreting C/N ratios.

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