Molina-Cruz, Adolfo; Price, Patricia (1977): Distribution of opal and quartz in surface sediments from the subtropical southeastern Pacific (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.407415, Supplement to: Molina-Cruz, A; Price, P (1977): Distribution of opal and quartz in the ocean-floor of the subtropical southeastern Pacific. Geology, 5(2), 81-84, https://doi.org/10.1130/0091-7613(1977)5%3C81:DOOAQO%3E2.0.CO;2
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Published: 1977 (exact date unknown) • DOI registered: 2006-04-26
Abstract:
The distribution patterns of opal and quartz on the ocean floor of the subtropical southeastern Pacific have been defined by analyzing 59 surface-sediment samples. The opal distribution resembles that of primary productivity in the surface waters, except along the Peruvian and northern Chilean coasts, where dilution reduces opal values. The distribution pattern of quartz represents both eolian and fluvial transport. Quartz distribution extends out as a tongue in the same direction and position as the prevailing southeast trade winds. Along the South American coast, high quartz concentrations are found in patches near shore and decrease rapidly seaward.
Coverage:
Median Latitude: -12.562421 * Median Longitude: -88.053392 * South-bound Latitude: -34.680000 * West-bound Longitude: -110.900000 * North-bound Latitude: 3.067000 * East-bound Longitude: -72.480000
Date/Time Start: 1958-12-05T00:00:00 * Date/Time End: 1972-03-24T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
RC08-98 * Latitude: -13.470000 * Longitude: -92.580000 * Date/Time: 1964-04-10T00:00:00 * Elevation: -3853.0 m * Recovery: 1.48 m * Campaign: RC08 * Basis: Robert Conrad * Method/Device: Piston corer (PC)
RC09-82 * Latitude: -17.570000 * Longitude: -73.150000 * Date/Time: 1965-02-05T00:00:00 * Elevation: -5000.0 m * Recovery: 4.16 m * Campaign: RC09 * Basis: Robert Conrad * Method/Device: Piston corer (PC)
RC09-83 * Latitude: -21.330000 * Longitude: -73.900000 * Date/Time: 1965-02-06T00:00:00 * Elevation: -4332.0 m * Recovery: 6.87 m * Campaign: RC09 * Basis: Robert Conrad * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Quartz | Qz | # | Molina-Cruz, Adolfo | carbonate and opal free | |
| 7 | Opal, carbonate free fraction | SiO2 carb free | % | Molina-Cruz, Adolfo |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
114 data points