C1-C5 hydrocarbons from core gas pockets at DSDP Leg 56 Holes


Autoria(s): Whelan, Jean K; Sato, S
Cobertura

MEDIAN LATITUDE: 39.737049 * MEDIAN LONGITUDE: 143.847702 * SOUTH-BOUND LATITUDE: 39.734800 * WEST-BOUND LONGITUDE: 143.792200 * NORTH-BOUND LATITUDE: 39.747800 * EAST-BOUND LONGITUDE: 144.102000 * DATE/TIME START: 1977-09-12T00:00:00 * DATE/TIME END: 1977-09-18T00:00:00

Data(s)

20/11/1980

Resumo

C1-C5 hydrocarbons from DSDP Legs 56 and 57 sediment gas pockets were analyzed on board ship. Results suggest that the C2-C5 hydrocarbons accompanied biogenic methane and were generated at low temperatures - less than 50° C - either by microorganisms or by low-temperature chemical reactions. Neopentane, a rare constituent of petroleum, is the major C5 component (about 80%) in much of the sediment at Site 438. This compound, which appeared in smaller amounts at Sites 434, 439, 440, and 441, seems to correlate with either fractured or coarse-grained sediments. Scatter in C4 and C5 isomer ratios and generally good correlation between C3, C4 and C5 components suggest local sources for these molecules.

Formato

application/zip, 3 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.823108

doi:10.1594/PANGAEA.823108

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Whelan, Jean K; Sato, S (1980): C1-C5 hydrocarbons from core gas pockets, Deep Sea Drilling Project Legs 56 and 57, Japan Trench transect. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57, Initial Reports of the Deep Sea Drilling Project, 56/57, U.S. Government Printing Office, 56-57, 1335-1347, doi:10.2973/dsdp.proc.5657.168.1980

Palavras-Chave #56-434; 56-434B; 56-435; 56-435A; Abund; Abundance; Behaviour; CH4; d13C CH4; Deep Sea Drilling Project; delta 13C, methane; Depth; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Event; Gas quantity; Glomar Challenger; Label; Leg56; mbsf; Methane; North Pacific/TRENCH; ODP sample designation; Of gas (log C2-C4 ); Sample code/label; Type
Tipo

Dataset