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Geochemistry from DSDP Holes 67-497 and 67-496

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Mineralogical identification, glass chemistry, and instrumental neutron activation analyses of Quaternary volcanic ash layers from Leg 67 Holes 496, 497, and 499 are used to correlate the drill holes and on-land sources.

Description

We have identified two units at Hole 496 that correspond to the 23,000-yr.-old Pinos Altos ash (Samples 496-3-4, 55-57 cm and 496-3-5, 74-76 cm); the 84,000-yr.-old Los Chocoyos ash corresponds with Sample 496-5-4, 134-146 cm, but this latter correlation is less certain.

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Provenance · 1 source records, 7 field assertions
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PANGAEAoai:pangaea.de:doi:10.1594/PANGAEA.81722915 d agoJSON v1
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