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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2006
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| Online Access: | https://doi.org/10.1594/PANGAEA.415874 |
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| _version_ | 1867169749799010304 |
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| author | Thiede, Jörn |
| author_facet | Thiede, Jörn |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Panama Basin sediment surface coarse fractions are dominantly composed of planktonic foraminiferal remains. Textural studies of these coarse fractions by means of a large diameter settling tube system reveal characteristics grain size spectra with important modes at 2.0-2.25 phi, 2.3-2.45 phi, 2.5-2.75 phi, 3.0-33 phi, and 3.4-3.75 phi. The coarser modes consist of large Globoquadrina dutertrei and Globorotalia menardii shells, the finer ones of small planktonic foraminiferal species and of shell fragments of the larger species. Analyses of samples from the Carnegie Gap provide sufficient information such that the extent of the high energy environment close to the sill depth can be mapped; the textural analyses also seem to indicate south and northward flowing components of the bottom currents which transport particle assemblages with distinct textural characteristics. The samples bear evidence for large scale removal of calcareous fines from the crest of structural highs; the fines are then dumped on the flanks of these elevations. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_415874 |
| institution | PANGAEA |
| language | en |
| publishDate | 2006 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Granulometry of surface sediments from the Panama Basin (Table 2, 3) Thiede, Jörn Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elevation of event; Event label; FFC; Free fall corer; GC; Gravity corer; Latitude of event; Longitude of event; MG3; Mode, area; Mode, grain size; Mode, height; Mode, width; North Pacific Ocean; PC; Piston corer; RC08; RC08-102; RC11; RC1112; RC11-238; Robert Conrad; Size fraction 1.45-1.90 phi; Size fraction 2.0-2.25 phi; Size fraction 2.3-2.45 phi; Size fraction 2.5-2.75 phi; Size fraction 3.0-3.3 phi; Size fraction 3.4-3.75 phi; Size fraction 3.95-4.15 phi; Size fraction 4.25-4.55 phi; V15; V15-29; V19; V19-24; V19-25; V19-27; V21; V21-211; V21-214; V21-25; V21-29; V21-30; V24; V24-36; Vema; Y69-102; Y69-71P; Y71-03; Y71-03-14; Y71-03-15; Y71-03-16; Y71-03-18; Y71-03-19; Y71-03-22; Y71-03-23; Y71-03-24; Y71-03-25; Y71-03-29; Y71-03-31; Y71-03-32; YALOC69; Yaquina Panama Basin sediment surface coarse fractions are dominantly composed of planktonic foraminiferal remains. Textural studies of these coarse fractions by means of a large diameter settling tube system reveal characteristics grain size spectra with important modes at 2.0-2.25 phi, 2.3-2.45 phi, 2.5-2.75 phi, 3.0-33 phi, and 3.4-3.75 phi. The coarser modes consist of large Globoquadrina dutertrei and Globorotalia menardii shells, the finer ones of small planktonic foraminiferal species and of shell fragments of the larger species. Analyses of samples from the Carnegie Gap provide sufficient information such that the extent of the high energy environment close to the sill depth can be mapped; the textural analyses also seem to indicate south and northward flowing components of the bottom currents which transport particle assemblages with distinct textural characteristics. The samples bear evidence for large scale removal of calcareous fines from the crest of structural highs; the fines are then dumped on the flanks of these elevations. |
| title | Granulometry of surface sediments from the Panama Basin (Table 2, 3) |
| topic | Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elevation of event; Event label; FFC; Free fall corer; GC; Gravity corer; Latitude of event; Longitude of event; MG3; Mode, area; Mode, grain size; Mode, height; Mode, width; North Pacific Ocean; PC; Piston corer; RC08; RC08-102; RC11; RC1112; RC11-238; Robert Conrad; Size fraction 1.45-1.90 phi; Size fraction 2.0-2.25 phi; Size fraction 2.3-2.45 phi; Size fraction 2.5-2.75 phi; Size fraction 3.0-3.3 phi; Size fraction 3.4-3.75 phi; Size fraction 3.95-4.15 phi; Size fraction 4.25-4.55 phi; V15; V15-29; V19; V19-24; V19-25; V19-27; V21; V21-211; V21-214; V21-25; V21-29; V21-30; V24; V24-36; Vema; Y69-102; Y69-71P; Y71-03; Y71-03-14; Y71-03-15; Y71-03-16; Y71-03-18; Y71-03-19; Y71-03-22; Y71-03-23; Y71-03-24; Y71-03-25; Y71-03-29; Y71-03-31; Y71-03-32; YALOC69; Yaquina |
| url | https://doi.org/10.1594/PANGAEA.415874 |