Trace-element contents in ash samples from DSDP Leg 19 sediments

The Sr, Rb, Ti, and Zr concentrations of 16 volcanic ash samples from Leg 19 of the Deep Sea Drilling Project were determined by X-ray fluorescence. The age of each ash sample had been established previously by faunal criteria and had been confirmed by fission-track dating. Variations in the trace-e...

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Bibliographic Details
Main Author: Edsall, Douglas Wayne
Format: Dataset
Language:English
Published: PANGAEA 1976
Subjects:
19-183
19-184
19-186
19-188
19-189
19-190
19-192
Deep Sea Drilling Project
DRILL
Drilling/drill rig
DSDP
Glomar Challenger
Leg19
North Pacific/BASIN
North Pacific/Bering Strait/BASIN
North Pacific/Bering Strait/PLATEAU
North Pacific/Bering Strait/RIDGE
North Pacific/GUYOT
North Pacific/PLAIN
Bering Strait
Pacific
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.718114
https://doi.org/10.1594/PANGAEA.718114
Description
Summary:The Sr, Rb, Ti, and Zr concentrations of 16 volcanic ash samples from Leg 19 of the Deep Sea Drilling Project were determined by X-ray fluorescence. The age of each ash sample had been established previously by faunal criteria and had been confirmed by fission-track dating. Variations in the trace-element concentrations through the past 8 m.y. are clearly seen. Seven of the ashes are older than 4 m.y., have low TiO2 contents, and have Sr concentrations of less than 200 ppm; they are thus similar to tholeiitic basalts of island arcs. Nine ashes are younger than 4 m.y. and are similar in trace-element content to andesite. Magmatic evolution of the Aleutian arc over the past 8 m.y. is clearly shown.

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