Unknown
PANGAEA
In:
Supplement to: Larrasoaña, Juan C; Gràcia, Eulàlia; Garcés, Miguel; Musgrave, Robert J; Piñero, Elena; Martinez-Ruiz, Francisca C; Vega, Marta (2006): Rock magnetic identification of magnetic iron sulfides and its bearing on the occurrence of gas hydrates, ODP Leg 204 (Hydrate Ridge). In: Tréhu, AM; Bohrmann, G; Torres, ME; Colwell, FS (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 204, 1-33, https://doi.org/10.2973/odp.proc.sr.204.111.2006
Publication Date:
2024-01-09
Description:
In this paper, we present a rock magnetic data set produced for sediments from Hydrate Ridge recovered during Ocean Drilling Program Leg 204. Our data set is based on several artificially induced magnetic properties that can be used as a diagnostic for the presence of magnetic iron sulfides. The occurrence of magnetic iron sulfides within the gas hydrate stability zone in locations where gas hydrates are present seems to confirm previous interpretations linking formation of such minerals with generation of gas hydrate. Magnetic iron sulfides are also found at positions deeper than the gas hydrate stability zone. We suggest that these positions, which include intervals located just below the bottom-simulating reflector and also at deeper positions, may mark the former presence of gas hydrates that have been later dissociated as the gas hydrate stability zone moved upward through time. Detailed characterization of the magnetic iron sulfide mineralogy and comparison with sedimentological and geochemical data will be attempted for better determining the significance of magnetic iron sulfides in Hydrate Ridge sediments and their possible applications in the study of gas hydrates.
Keywords:
204-1244E; 204-1245B; 204-1246B; 204-1247B; 204-1248C; 204-1249; 204-1250C; 204-1251B; 204-1252A; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg204; North Pacific Ocean; Ocean Drilling Program; ODP
Type:
Dataset
Format:
application/zip, 9 datasets
Permalink
|
Location |
Call Number |
Expected |
Availability |
