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  • 1
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The distribution and composition of four benthic foraminifera assemblages from the Guaymas Basin are depicted through Q- and R-mode Factor Analysis. One of these assemblages is distributed near hydrothermal vents,* another developed away from the influence of the vents, and the other two assemblages are found in the subbottom sediments. Biostratigraphic analysis of five cores collected within the hydrothermal region suggest that the foraminiferal remains have been affected by aselective dissolution process. Only small species, such asBulimina spinosa andBolivina sp “2”, have been preserved in the subbottom sediments which have been influenced by the hydrothermal activity.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sill intrusions into highly porous sediments in the Guaymas Basin, Gulf of California, lead to low-grade metamorphism, thermal alteration and migration of organic compounds, marked changes in interstitial water chemistry, and large-scale expulsion of heated pore fluids. The latter process creates ...
    Type of Medium: Electronic Resource
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  • 3
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    PANGAEA
    In:  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, https://doi.org/10.1130/0091-7613(1977)5%3C81:DOOAQO%3E2.0.CO;2
    Publication Date: 2023-06-27
    Description: 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.
    Keywords: DEPTH, sediment/rock; Elevation of event; Event label; GC; Gravity corer; Latitude of event; Longitude of event; MG1; MG3; MG4; Opal, carbonate free fraction; PC; Piston corer; Quartz; RC08; RC08-98; RC09; RC09-82; RC09-83; RC09-86; RC09-87; RC09-89; RC09-90; RC09-91; RC11; RC1112; RC11-230; RC11-234; RC13; RC13-100TW; RC13-105TW; RC13-111TW; RC13-117TW; RC13-96TW; RC13-98TW; RC13-99TW; RC15; RC15-52TW; RC15-53TW; RC15-54TW; RC15-55TW; RC15-58TW; Robert Conrad; South Pacific Ocean; V15; V15-33; V15-56; V19; V19-30; V19-36; V19-38; V19-39; V19-46; V21; V21-29; V24; V24-40; V24-46; Vema; Y69-103P; Y69-104MG; Y69-71P; Y69-80MGL; Y71-06; Y71-06-04; Y71-06-12; Y71-06-14; Y71-06-18; Y71-07; Y71-07-27; Y71-07-28; Y71-07-30; Y71-07-32; Y71-07-33; Y71-07-35; Y71-07-36; Y71-07-38; Y71-08; Y71-08-70; Y71-08-77; Y71-09; Y71-09-84; Y71-09-85; Y71-09-86; Y71-09-87; Y71-09-88; Y71-09-89; Y71-09-91; YALOC69; Yaquina
    Type: Dataset
    Format: text/tab-separated-values, 114 data points
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