Geotechnical property variability of continental margin sediments: High‐resolution vertical and lateral data from the northern California slope
| Autor: | Richard H. Bennett, William B. Sawyer, Barbara Ransom |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Marine Georesources & Geotechnology. 15:283-304 |
| ISSN: | 1521-0618 1064-119X |
| Popis: | High‐resolution vertical and lateral gradients and variations in sediment mass physical properties were derived from measurements in box cores, on the scale of millimeters, tens of centimeters, and kilometers from typical, relatively broad areas of the northern California continental slope in the Cape Mendocino area at water depths from 380 to 940 m. Such data are important as a control on comparisons of different sediment suites, as well as providing limits for realistic flux calculations of dissolved inorganic and biochemical species and pollutants. The sediments studied have relatively constant organic carbon contents (OC ? 1.75 wt%) and bulk mineralogy. They range from silty sands (∼45% sand, 40% silt) to clayey silts (∼63% silt, ∼35% clay) and are extensively bioturbated. Physical property variations between subcores (∼25 to 35 cm in length), taken from the same box core, increase with increasing clay content. For coarse‐grained sediments, mean down‐core differences in physical property values betwee... |
| Databáze: | OpenAIRE |
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