Reduction of iron with no systematic isotope fractionation during continental subduction observed in metamorphic rocks from the Dabie-Sulu orogen, China

2021 ◽  
pp. 105054
Author(s):  
Qianqian Yan ◽  
Yongsheng He ◽  
Chuanwei Zhu ◽  
Hongjie Wu ◽  
Qingshang Shi
Keyword(s):  
Isotope Fractionation ◽  
Metamorphic Rocks ◽  
Continental Subduction ◽  
Reduction Of Iron

Iron isotope fractionation during microbial reduction of iron: The importance of adsorption

Geology ◽  
2004 ◽  
Vol 32 (3) ◽  
pp. 205 ◽  
Author(s):  
G.A. Icopini ◽  
A.D. Anbar ◽  
S.S. Ruebush ◽  
M. Tien ◽  
S.L. Brantley
Keyword(s):  
Isotope Fractionation ◽  
Microbial Reduction ◽  
Iron Isotope ◽  
Reduction Of Iron

How Himalayan collision stems from subduction

Geology ◽  
2021 ◽  
Author(s):  
M. Soret ◽  
K.P. Larson ◽  
J. Cottle ◽  
A. Ali
Keyword(s):  
Foreland Basin ◽  
Continental Collision ◽  
Ultrahigh Pressure ◽  
Metamorphic Rocks ◽  
Conductive Heat ◽  
Plate Interface ◽  
Continental Subduction ◽  
Metamorphic History ◽  
Orogenic Wedge ◽  
History Of

The mechanisms and processes active during the transition from continental subduction to continental collision at the plate interface are largely unknown. Rock records of this transition are scarce, either not exposed or obliterated during subsequent events. We examine the tectono-metamorphic history of Barrovian metamorphic rocks from the western Himalayan orogenic wedge. We demonstrate that these rocks were buried to amphibolite-facies conditions from ≤47 Ma to 39 ± 1 Ma, synchronously with the formation (46 Ma) and partial exhumation (45–40 Ma) of the ultrahigh-pressure eclogites. This association indicates that convergence during continental subduction was accommodated via development of a deep orogenic wedge built through successive underplating of continental material, including the partially exhumed eclogites, likely in response to an increase in interplate coupling. This process resulted in the heating of the subduction interface (from ~7 to ~20 °C/km) through advective and/or conductive heat transfer. Rapid cooling of the wedge from 38 Ma, coeval with the formation of a foreland basin, are interpreted to result from indentation of a promontory of thick Indian crust.

scholarly journals Assessment of 2,4-Dinitroanisole Transformation Using Compound-Specific Isotope Analysis After in Situ Chemical Reduction of Iron Oxides

2019 ◽  
Author(s):  
Matthew J. Berens ◽  
Thomas Hofstetter ◽  
Jakov Bolotin ◽  
William Arnold
Keyword(s):  
Iron Oxides ◽  
Ferrous Iron ◽  
Isotope Fractionation ◽  
Chemical Reduction ◽  
Isotope Analysis ◽  
Natural Minerals ◽  
Compound Specific Isotope Analysis ◽  
Insensitive Munitions ◽  
Reduction Of Iron

A study of isotope fractionation upon reaction of the insensitive munitions compounds 2,4-dintroanisole with natural minerals in the presence of ferrous iron or treated with dithionite to produce reducing equivalents.

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