(Table 1) Carbonate concentration of sediments from ODP Leg 164
Sediment cores recovered during ODP drilling operations are commonly scanned using a Minolta CM-2002 spectrophotometer to obtain spectral data. Core processing procedures aboard the JOIDES Resolution require that these spectral data be measured on wet cores. However, the effects of changing water co...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.758900 2024-09-09T19:58:16+00:00 (Table 1) Carbonate concentration of sediments from ODP Leg 164 Balsam, William L Deaton, Bobby C Damuth, John E MEDIAN LATITUDE: 26.618183 * MEDIAN LONGITUDE: -69.104983 * SOUTH-BOUND LATITUDE: -3.550000 * WEST-BOUND LONGITUDE: -76.190500 * NORTH-BOUND LATITUDE: 32.983600 * EAST-BOUND LONGITUDE: -35.230000 * DATE/TIME START: 1968-02-24T00:00:00 * DATE/TIME END: 1995-12-10T00:10:00 * MINIMUM DEPTH, sediment/rock: 0.07 m * MAXIMUM DEPTH, sediment/rock: 0.19 m 1998 text/tab-separated-values, 57 data points https://doi.pangaea.de/10.1594/PANGAEA.758900 https://doi.org/10.1594/PANGAEA.758900 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.758900 https://doi.org/10.1594/PANGAEA.758900 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Balsam, William L; Deaton, Bobby C; Damuth, John E (1998): The effects of water content on diffuse reflectance spectrophotometry studies of deep-sea sediment cores. Marine Geology, 149(1-4), 177-189, https://doi.org/10.1016/S0025-3227(98)00033-4 164-991A 164-992A 164-993A 164-996E 164-997A Carbonates DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg164 Lithology/composition/facies Nicaraguan Rise North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer Sample code/label V25 V25-56 Vema Visual description dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.75890010.1016/S0025-3227(98)00033-4 2024-08-21T00:02:27Z Sediment cores recovered during ODP drilling operations are commonly scanned using a Minolta CM-2002 spectrophotometer to obtain spectral data. Core processing procedures aboard the JOIDES Resolution require that these spectral data be measured on wet cores. However, the effects of changing water content on the spectra of marine sediments is unknown. We examined the effects of changing water content on visible light (VIS) diffuse refiectance spectra for core samples composed of clay to foraminiferal ooze. The spectra of dry powdered samples were measured, then the samples were completely saturated (~35% water content) and spectra were measured at set time intervals as the samples progressively dried. The fully saturated samples were appreciably darker than the initial dry samples. The samples continued to darken during the initial phases of drying until the water content had decreased from 35% to ~20%. As the water content continued to decrease below 20%, the samples became progressively lighter and attained spectral values similar to the fully saturated samples at water contents of ~ 17%. Samples continued to lighten until they were totally dry; however, values never became as light as those of the dry samples prior to initial wetting. Changes in refiectance with decreasing water content are not uniform across the VIS. If the water content is greater than 5%, the refiectance decrease relative to a dry sample is greater at the red end of the spectrum. However, at water contents of less than 5%, the spectral curves of the wet and dry sediments are similar in shape, but the wet sediments are still darker. Comparison of these data with data obtained from similar saturation experiments using a coarse-grained beach sand suggest that the initial darkening of the saturated carbonate sediments apparently results frorn changing of the physical properties of the sediment; decreasing the water content apparently rearranges the grains. These studies suggest that maximum information will be obtained when spectral ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-76.190500,-35.230000,32.983600,-3.550000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
164-991A 164-992A 164-993A 164-996E 164-997A Carbonates DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg164 Lithology/composition/facies Nicaraguan Rise North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer Sample code/label V25 V25-56 Vema Visual description |
spellingShingle |
164-991A 164-992A 164-993A 164-996E 164-997A Carbonates DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg164 Lithology/composition/facies Nicaraguan Rise North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer Sample code/label V25 V25-56 Vema Visual description Balsam, William L Deaton, Bobby C Damuth, John E (Table 1) Carbonate concentration of sediments from ODP Leg 164 |
topic_facet |
164-991A 164-992A 164-993A 164-996E 164-997A Carbonates DEPTH sediment/rock DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg164 Lithology/composition/facies Nicaraguan Rise North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer Sample code/label V25 V25-56 Vema Visual description |
description |
Sediment cores recovered during ODP drilling operations are commonly scanned using a Minolta CM-2002 spectrophotometer to obtain spectral data. Core processing procedures aboard the JOIDES Resolution require that these spectral data be measured on wet cores. However, the effects of changing water content on the spectra of marine sediments is unknown. We examined the effects of changing water content on visible light (VIS) diffuse refiectance spectra for core samples composed of clay to foraminiferal ooze. The spectra of dry powdered samples were measured, then the samples were completely saturated (~35% water content) and spectra were measured at set time intervals as the samples progressively dried. The fully saturated samples were appreciably darker than the initial dry samples. The samples continued to darken during the initial phases of drying until the water content had decreased from 35% to ~20%. As the water content continued to decrease below 20%, the samples became progressively lighter and attained spectral values similar to the fully saturated samples at water contents of ~ 17%. Samples continued to lighten until they were totally dry; however, values never became as light as those of the dry samples prior to initial wetting. Changes in refiectance with decreasing water content are not uniform across the VIS. If the water content is greater than 5%, the refiectance decrease relative to a dry sample is greater at the red end of the spectrum. However, at water contents of less than 5%, the spectral curves of the wet and dry sediments are similar in shape, but the wet sediments are still darker. Comparison of these data with data obtained from similar saturation experiments using a coarse-grained beach sand suggest that the initial darkening of the saturated carbonate sediments apparently results frorn changing of the physical properties of the sediment; decreasing the water content apparently rearranges the grains. These studies suggest that maximum information will be obtained when spectral ... |
format |
Dataset |
author |
Balsam, William L Deaton, Bobby C Damuth, John E |
author_facet |
Balsam, William L Deaton, Bobby C Damuth, John E |
author_sort |
Balsam, William L |
title |
(Table 1) Carbonate concentration of sediments from ODP Leg 164 |
title_short |
(Table 1) Carbonate concentration of sediments from ODP Leg 164 |
title_full |
(Table 1) Carbonate concentration of sediments from ODP Leg 164 |
title_fullStr |
(Table 1) Carbonate concentration of sediments from ODP Leg 164 |
title_full_unstemmed |
(Table 1) Carbonate concentration of sediments from ODP Leg 164 |
title_sort |
(table 1) carbonate concentration of sediments from odp leg 164 |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.758900 https://doi.org/10.1594/PANGAEA.758900 |
op_coverage |
MEDIAN LATITUDE: 26.618183 * MEDIAN LONGITUDE: -69.104983 * SOUTH-BOUND LATITUDE: -3.550000 * WEST-BOUND LONGITUDE: -76.190500 * NORTH-BOUND LATITUDE: 32.983600 * EAST-BOUND LONGITUDE: -35.230000 * DATE/TIME START: 1968-02-24T00:00:00 * DATE/TIME END: 1995-12-10T00:10:00 * MINIMUM DEPTH, sediment/rock: 0.07 m * MAXIMUM DEPTH, sediment/rock: 0.19 m |
long_lat |
ENVELOPE(-76.190500,-35.230000,32.983600,-3.550000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Balsam, William L; Deaton, Bobby C; Damuth, John E (1998): The effects of water content on diffuse reflectance spectrophotometry studies of deep-sea sediment cores. Marine Geology, 149(1-4), 177-189, https://doi.org/10.1016/S0025-3227(98)00033-4 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.758900 https://doi.org/10.1594/PANGAEA.758900 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.75890010.1016/S0025-3227(98)00033-4 |
_version_ |
1809929267502383104 |