Carbon and nitrogen composition and isotope ratios of bulk and decarbonated sediments from ODP Leg 207 sites

Organic carbon, total nitrogen, carbonate carbon, and carbonate oxygen isotopic compositions were measured for 95 samples selected from the black shale sequences drilled during Ocean Drilling Program Leg 207 on the Demerara Rise. Most samples have organic d13C values smaller than -27 per mil, with t...

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Bibliographic Details
Main Authors: Meyers, Philip A, Bernasconi, Stefano M
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2006
Subjects:
207-1257
207-1257C
207-1258
207-1258B
207-1258C
207-1259
207-1260
207-1260B
207-1261
COMPCORE
Composite Core
DRILL
Drilling/drill rig
Joides Resolution
Leg207
North Atlantic Ocean
Ocean Drilling Program
ODP
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.776016
https://doi.org/10.1594/PANGAEA.776016
Description
Summary:Organic carbon, total nitrogen, carbonate carbon, and carbonate oxygen isotopic compositions were measured for 95 samples selected from the black shale sequences drilled during Ocean Drilling Program Leg 207 on the Demerara Rise. Most samples have organic d13C values smaller than -27 per mil, with the exception of several samples that have values between -24.9 per mil and -23.9 per mil that may correspond to oceanic anoxic events. Bulk d15N values range between -4.2 per mi and +4.4 per mil and become smaller as organic carbon concentrations increase. Comparison of the d15N values of nondecarbonated samples to their decarbonated analogs reveals no systematic effect of the acid treatment used in the decarbonation.

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