Distribution of opal and quartz in surface sediments from the subtropical southeastern Pacific (Table 1), supplement to: Molina-Cruz, Adolfo; Price, Patricia (1977): Distribution of opal and quartz in the ocean-floor of the subtropical southeastern Pacific. Geology, 5(2), 81-84


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.

DOI https://doi.org/10.1594/PANGAEA.407415
Related Identifier https://doi.org/10.1130/0091-7613(1977)5<81:DOOAQO>2.0.CO
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.407415
Creator Molina-Cruz, Adolfo; Price, Patricia
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1977
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 114 data points
Discipline Earth System Research
Spatial Coverage (-110.900W, -34.680S, -72.480E, 3.067N); South Pacific Ocean
Temporal Coverage Begin 1958-12-05T00:00:00Z
Temporal Coverage End 1972-03-24T00:00:00Z