Minerals and geochemistry at DSDP Hole 62-466
| Cobertura |
LATITUDE: 34.191000 * LONGITUDE: 179.255700 * DATE/TIME START: 1978-08-28T00:00:00 * DATE/TIME END: 1978-08-28T00:00:00 |
|---|---|
| Data(s) |
27/09/1981
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| Resumo |
Alkali-basalt clasts in Upper Cretaceous sediments from Site 466 on southern Hess Rise suggest that parts of Hess Rise were constructed by off-ridge volcanic activity. Apparently, tectonic adjustments at Hess Rise occurred during the Late Cretaceous (Campanian-Maastrichtian), when parts of the original volcanic pedestal were uplifted and provided source rocks for the clasts. Synchronous volcanism may have occurred. Causes for the Late Cretaceous tectonic adjustments (and volcanism?) are not known, but they may be related to intraplate movement along the Mendocino Fracture Zone. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.819817 doi:10.1594/PANGAEA.819817 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Vallier, Tracy L; Windom, Kenneth E; Seifert, Karl E; Lee-Wong, Florence (1981): Petrologic and tectonic significance of volcanic clasts in upper Cretaceous nannofossil ooze, Deep Sea Drilling Project Site 466, southern Hess Rise. In: Thiede, J; Vallier, TL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 62, 961-966, doi:10.2973/dsdp.proc.62.151.1981 |
| Palavras-Chave | #62-466; Al(IV); Al(VI); Al2O3; Aluminium (IV); Aluminium (VI); Aluminium oxide; Amygdules; Amygdules, total; Ca; Cal; Calcite; Calcium; Calcium oxide; Calculated based on oxygen number; CaO; Chromium; Chromium(III) oxide; Comment; Cr; Cr2O3; Deep Sea Drilling Project; Designates the clasts selected from one interval; DRILL; Drilling/drill rig; DSDP; Electron microprobe; En; Enstatite; Fe2+; Feldspar; Feldspar laths; FeO; Ferrosilite; Fs; Fsp; Glomar Challenger; gm; Groundmass; Idd; Iddingsite; Iron 2+; Iron oxide, FeO; Leg62; Mafic min; Mafic minerals; Magnesium; Magnesium oxide; Manganese; Manganese oxide; Mg; MgO; Microlite; Minerals; Mn; MnO; Molar; Na; Na2O; North Pacific/CONT RISE; ODP sample designation; Ol; Olivine; Opaque; Opaque minerals; Phenocrysts; Phillipsite; Php; PhX; Pyrox; Pyroxene; Pyroxene unaltered; Sample; Sample code/label; Sample ID; Si; Silicon; Silicon dioxide; SiO2; Sme; Smectite; Smectite-lined; Sodium; Sodium oxide; Tachylite; Ti; TiO2; Titanium; Titanium oxide; Total; Undifferentiated; Undifferentiated mafic minerals; Unlined; Vesicle; Wo; Wollastonite |
| Tipo |
Dataset |
