Organic carbon and nitrogen, sediment composition, and clay mineralogy of Deep Sea Drilling Project Site 603, western Atlantic Ocean

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Bibliographische Detailangaben
Hauptverfasser:	Emeis, Kay-Christian, Mycke, Bernd, Richnow, H-H, Spitzy, Alejandro, Degens, Egon T
Format:	Dataset Open Access
Sprache:	en
Veröffentlicht:	PANGAEA 1987
Schlagworte:	Deep Sea Drilling Project; DSDP
Online-Zugang:	Acceder al recurso
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author	Emeis, Kay-Christian Mycke, Bernd Richnow, H-H Spitzy, Alejandro Degens, Egon T
author_facet	Emeis, Kay-Christian Mycke, Bernd Richnow, H-H Spitzy, Alejandro Degens, Egon T
collection	Datos científicos de ciencias marinas y ambientales
contents	Sediment and interstitial water samples recovered during DSDP Leg 93 at Site 603 (lower continental rise off Cape Hatteras) were analyzed for a series of geochemical facies indicators to elucidate the nature and origin of the sedimentary material. Special emphasis was given to middle Cretaceous organic-matter-rich turbidite sequences of Aptian to Turanian age. Organic carbon content ranges from nil in pelagic claystone samples to 4.2% (total rock) in middle Cretaceous carbonaceous mudstones of turbiditic origin. The organic matter is of marine algal origin with significant contributions of terrigenous matter via turbidites. Maturation indices (vitrinite reflectance) reveal that the terrestrial humic material is reworked. Maturity of autochthonous material (i.e., primary vitrinite) falls in the range of 0.3 to 0.6% Carbohydrate, hydrocarbon, and microscopic investigations reveal moderate to high microbial degradation. Unlike deep-basin black shales of the South and North Atlantic, organic-carbon-rich members of the Hatteras Formation lack trace metal enrichment. Dissolved organic carbon (DOC) in interstitial water samples ranges from 34.4 ppm in a sandstone sample to 126.2 ppm in an organic-matter-rich carbonaceous claystone sample. One to two percent of DOC is carbohydratecarbon.
format	Dataset Open Access
id	pangaea_https___doi_org_10_1594_PANGAEA_789311
institution	PANGAEA
language	en
publishDate	1987
publisher	PANGAEA
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spellingShingle	Organic carbon and nitrogen, sediment composition, and clay mineralogy of Deep Sea Drilling Project Site 603, western Atlantic Ocean Emeis, Kay-Christian Mycke, Bernd Richnow, H-H Spitzy, Alejandro Degens, Egon T Deep Sea Drilling Project; DSDP Sediment and interstitial water samples recovered during DSDP Leg 93 at Site 603 (lower continental rise off Cape Hatteras) were analyzed for a series of geochemical facies indicators to elucidate the nature and origin of the sedimentary material. Special emphasis was given to middle Cretaceous organic-matter-rich turbidite sequences of Aptian to Turanian age. Organic carbon content ranges from nil in pelagic claystone samples to 4.2% (total rock) in middle Cretaceous carbonaceous mudstones of turbiditic origin. The organic matter is of marine algal origin with significant contributions of terrigenous matter via turbidites. Maturation indices (vitrinite reflectance) reveal that the terrestrial humic material is reworked. Maturity of autochthonous material (i.e., primary vitrinite) falls in the range of 0.3 to 0.6% Carbohydrate, hydrocarbon, and microscopic investigations reveal moderate to high microbial degradation. Unlike deep-basin black shales of the South and North Atlantic, organic-carbon-rich members of the Hatteras Formation lack trace metal enrichment. Dissolved organic carbon (DOC) in interstitial water samples ranges from 34.4 ppm in a sandstone sample to 126.2 ppm in an organic-matter-rich carbonaceous claystone sample. One to two percent of DOC is carbohydratecarbon.
title	Organic carbon and nitrogen, sediment composition, and clay mineralogy of Deep Sea Drilling Project Site 603, western Atlantic Ocean
topic	Deep Sea Drilling Project; DSDP
url	https://doi.org/10.1594/PANGAEA.789311

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