Chemical and isotopic compositions of hydrothermal fluids at Snail, Archaean, Pika, and Urashima sites in the southern Mariana Trough

Hydrothermal fluids were collected from five hydrothermal fields around the Southern Mariana Trough backarc spreading center for chemical and isotopic analyses. Yamanaka site was interpreted as inactive, so we present results from Snail, Archaean, Pika and Urashima sites. The slightly low pH and neg...

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Bibliographic Details
Main Authors: Toki, Tomohiro, Ishibashi, Jun-ichiro, Noguchi, Takuroh, Tawata, Miki, Tsunogai, Urumu, Yamanaka, Toshiro, Nakamura, Kentaro
Format: Other/Unknown Material
Language:English
Published: Springer Japan 2015
Subjects:
Backarc spreading center
Geochemistry
Hydrothermal fluid
Iron TAIGA
Magmatic volatile
Southern Mariana
taiga
Online Access:https://hdl.handle.net/20.500.12000/37665
Description
Summary:Hydrothermal fluids were collected from five hydrothermal fields around the Southern Mariana Trough backarc spreading center for chemical and isotopic analyses. Yamanaka site was interpreted as inactive, so we present results from Snail, Archaean, Pika and Urashima sites. The slightly low pH and negative alkalinity suggests a little bit input of magmatic volatiles, supported by high CO2 concentrations. Consequently low pH would lead to the hydrothermal fluids rich in Fe compared to the MOR hydrothermal fluids. 図書の１章 http://purl.org/coar/resource_type/c_2f33

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