Interstitial-water chemistry of ODP Leg 119 sites
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PANGAEA
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
1991
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| _version_ | 1867171361135263744 |
|---|---|
| author | Cranston, Ray E |
| author_facet | Cranston, Ray E |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Ocean Drilling Program inorganic geochemistry procedures routinely overlook more than 99% of the sediment column. Present and past biogeochemical reactions alter the sediment record; however, most of these reaction zones are bypassed by the normal methods where samples are collected every 30 m. A new approach to increase resolution was introduced during Leg 119. Ten milliliters of sediment provided interstitial-water samples for ammonia, silica, sulfate, magnesium, and calcium analyses. The new method introduced some systematic differences in concentrations, as well as some decrease in precision. A number of advantages, however, may warrant using the method in some instances. In cases where routine interstitial-water data showed anomalous results, core sections were retrieved from the storage facility and resampled. The new high-resolution procedure was used to provide water samples in cases were water contents were low and routine squeezing could not recover pore water. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_758179 |
| institution | PANGAEA |
| language | en |
| publishDate | 1991 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Interstitial-water chemistry of ODP Leg 119 sites Cranston, Ray E 119-736; 119-737; 119-738; 119-739; 119-744; 119-745; 119-746; 119-746A; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP; Prydz Bay Ocean Drilling Program inorganic geochemistry procedures routinely overlook more than 99% of the sediment column. Present and past biogeochemical reactions alter the sediment record; however, most of these reaction zones are bypassed by the normal methods where samples are collected every 30 m. A new approach to increase resolution was introduced during Leg 119. Ten milliliters of sediment provided interstitial-water samples for ammonia, silica, sulfate, magnesium, and calcium analyses. The new method introduced some systematic differences in concentrations, as well as some decrease in precision. A number of advantages, however, may warrant using the method in some instances. In cases where routine interstitial-water data showed anomalous results, core sections were retrieved from the storage facility and resampled. The new high-resolution procedure was used to provide water samples in cases were water contents were low and routine squeezing could not recover pore water. |
| title | Interstitial-water chemistry of ODP Leg 119 sites |
| topic | 119-736; 119-737; 119-738; 119-739; 119-744; 119-745; 119-746; 119-746A; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP; Prydz Bay |
| url | https://doi.org/10.1594/PANGAEA.758179 |