Coarse-silt-fraction mineralogy at DSDP Legs 56 and 57 Holes
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1980
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| _version_ | 1867171366668599296 |
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| author | Murdmaa, Ivar O Kazakova, Vera P |
| author_facet | Murdmaa, Ivar O Kazakova, Vera P |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Soviet sedimentologists use the term "coarse silt" to denote the size fraction 0.1 to 0.05 mm (50-100 µm). Petelin (1961) has shown that this fraction is most diagnostic for terrigeneous and volcanogenic mineral assemblages and provinces in Recent deep-sea sediments, because of its greatest variability of both heavy and light non-opaque minerals, which may be easily identified by the common immersion method. We believe that the fraction is suitable for mineralogical study of unconsolidated and friable sediments from DSDP cores as well, if the objective is to investigate their source area and transporation tracks. In the case of fine-grained oceanic sediments, mineral composition of the coarse silt does not differ markedly from that of the "coarse fraction" (>62 µm). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_822053 |
| institution | PANGAEA |
| language | en |
| publishDate | 1980 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Coarse-silt-fraction mineralogy at DSDP Legs 56 and 57 Holes Murdmaa, Ivar O Kazakova, Vera P 56-434; 56-434A; 56-434B; 56-435; 56-435A; 56-436; 57-438; 57-438A; 57-439; 57-440; 57-440A; 57-440B; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg56; Leg57; North Pacific/BASIN; North Pacific/RIDGE; North Pacific/TRENCH Soviet sedimentologists use the term "coarse silt" to denote the size fraction 0.1 to 0.05 mm (50-100 µm). Petelin (1961) has shown that this fraction is most diagnostic for terrigeneous and volcanogenic mineral assemblages and provinces in Recent deep-sea sediments, because of its greatest variability of both heavy and light non-opaque minerals, which may be easily identified by the common immersion method. We believe that the fraction is suitable for mineralogical study of unconsolidated and friable sediments from DSDP cores as well, if the objective is to investigate their source area and transporation tracks. In the case of fine-grained oceanic sediments, mineral composition of the coarse silt does not differ markedly from that of the "coarse fraction" (>62 µm). |
| title | Coarse-silt-fraction mineralogy at DSDP Legs 56 and 57 Holes |
| topic | 56-434; 56-434A; 56-434B; 56-435; 56-435A; 56-436; 57-438; 57-438A; 57-439; 57-440; 57-440A; 57-440B; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg56; Leg57; North Pacific/BASIN; North Pacific/RIDGE; North Pacific/TRENCH |
| url | https://doi.org/10.1594/PANGAEA.822053 |