Petrographic data for samples from DSDP Holes 63-471 and 65-485

Detrital modes of middle Miocene sandstone recovered at Deep Sea Drilling Project Site 471 on the Magdalena Fan support the hypothesis that the fan has been displaced northward from a source hundreds of kilometers to the south near the present mouth of the Gulf of California. The modes are dissimilar to those of modern sand derived from onshore outcrops of Miocene volcanic and volcaniclastic rocks, Neogene sedimentary rocks, and Mesozoic subduction complex. They most closely match sand associated with the mouth of Gulf of California. The overall stratigraphy, sand composition, and diagenesis at Site 471 are consistent with deposition of the Magdalena Fan on young oceanic crust near a spreading ridge at a triple junction.

Data and Resources

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Cite this as

Marsaglia, Kathleen M (2004). Dataset: Petrographic data for samples from DSDP Holes 63-471 and 65-485. https://doi.org/10.1594/PANGAEA.713689

DOI retrieved: 2004

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.713689
Author Marsaglia, Kathleen M
Given Name Kathleen M
Family Name Marsaglia
Source Creation 2004
Publication Year 2004
Resource Type application/zip - filename: Marsaglia-2004-Suppl
Subject Areas
Name: Lithosphere

Related Identifiers
Title: Sandstone detrital modes support Magdalena Fan displacement from the mouth of the Gulf of California
Identifier: https://doi.org/10.1130/G20099.1
Type: DOI
Relation: IsSupplementTo
Year: 2004
Source: Geology
Authors: Marsaglia Kathleen M .