Bulk geochemistry, mass change and alteration intensity of basalts from ODP Leg 187 sites and survey dredges
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
2004
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867168560443293696 |
|---|---|
| author | Miller, D Jay Kelley, J |
| author_facet | Miller, D Jay Kelley, J |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Shipboard studies during Ocean Drilling Program Leg 187 (Australian Antarctic Discordance, AAD) suggested that there was no discernible coincidence between the interpreted age of rocks recovered and the intensity of alteration observed. Samples from the oldest sites occupied appeared to exhibit the least overall effects of alteration, and the intensity of alteration varied from site to site. Previous investigations of low-temperature alteration in oceanic basement samples have been restricted by the myopic perspective provided by single drill holes or dredge collections. Combining core samples from Leg 187 and dredge samples from the AAD collection at Oregon State University (USA) offers the unique opportunity to investigate mineral and bulk chemical changes attending alteration of basalt over a range of ages from 0 to 28 Ma. Results of this research indicate that there is a general increase in the intensity of alteration as the basalts age and mosve off axis, but that this relationship is somewhat veiled by the dominating control on alteration intensity dictated by variations in permeability. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_780737 |
| institution | PANGAEA |
| language | en |
| publishDate | 2004 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Bulk geochemistry, mass change and alteration intensity of basalts from ODP Leg 187 sites and survey dredges Miller, D Jay Kelley, J 187-1152A; 187-1152B; 187-1153A; 187-1154A; 187-1155A; 187-1155B; 187-1156A; 187-1156B; 187-1157A; 187-1157B; 187-1158A; 187-1158B; 187-1158C; 187-1159A; 187-1160B; 187-1161A; 187-1161B; 187-1162B; 187-1163A; 187-1164A; 187-1164B; Australian Antarctic Discordance; Dredge; DRG; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg187; MA-MB-BB; Ocean Drilling Program; ODP Shipboard studies during Ocean Drilling Program Leg 187 (Australian Antarctic Discordance, AAD) suggested that there was no discernible coincidence between the interpreted age of rocks recovered and the intensity of alteration observed. Samples from the oldest sites occupied appeared to exhibit the least overall effects of alteration, and the intensity of alteration varied from site to site. Previous investigations of low-temperature alteration in oceanic basement samples have been restricted by the myopic perspective provided by single drill holes or dredge collections. Combining core samples from Leg 187 and dredge samples from the AAD collection at Oregon State University (USA) offers the unique opportunity to investigate mineral and bulk chemical changes attending alteration of basalt over a range of ages from 0 to 28 Ma. Results of this research indicate that there is a general increase in the intensity of alteration as the basalts age and mosve off axis, but that this relationship is somewhat veiled by the dominating control on alteration intensity dictated by variations in permeability. |
| title | Bulk geochemistry, mass change and alteration intensity of basalts from ODP Leg 187 sites and survey dredges |
| topic | 187-1152A; 187-1152B; 187-1153A; 187-1154A; 187-1155A; 187-1155B; 187-1156A; 187-1156B; 187-1157A; 187-1157B; 187-1158A; 187-1158B; 187-1158C; 187-1159A; 187-1160B; 187-1161A; 187-1161B; 187-1162B; 187-1163A; 187-1164A; 187-1164B; Australian Antarctic Discordance; Dredge; DRG; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg187; MA-MB-BB; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.780737 |