Geochemistry of high-grade supracrustal rocks from the Kerala Khondalite Belt and adjacent massif charnockites, South India

1992 ◽  
Vol 55 (1-4) ◽  
pp. 469-489 ◽  
Author(s):  
Thomas Chacko ◽  
G.R. Ravindra Kumar ◽  
James K. Meen ◽  
John J.W. Rogers
Keyword(s):  
South India ◽  
High Grade ◽  
Kerala Khondalite Belt ◽  
Khondalite Belt

scholarly journals Timing of High-Grade Metamorphism in Madurai Block, South India: Insights from New U-Pb Zircon & Monazite Ages

2020 ◽  
Author(s):  
J Amal Dev ◽  
J K Tomson ◽  
K Anto Francis ◽  
Nilanjana Sorcar ◽  
V Nandakumar
Keyword(s):  
South India ◽  
High Grade ◽  
Grade Metamorphism ◽  
High Grade Metamorphism

scholarly journals New finding of kyanite and andalusite in sillimanite-rich pelitic granulites from the Kerala Khondalite Belt, Southern India

2010 ◽  
Vol 105 (6) ◽  
pp. 328-333 ◽  
Author(s):  
Mutsumi KATO ◽  
Hyoe MITSUI ◽  
Tomoyuki KOBAYASHI ◽  
Yoshikuni HIROI ◽  
M. SATISH-KUMAR ◽  
...  
Keyword(s):  
Southern India ◽  
New Finding ◽  
Kerala Khondalite Belt ◽  
Khondalite Belt

scholarly journals The Effects of High-Grade Metamorphism on Cr-Spinel from the Archean Sittampundi Complex, South India

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1370
Author(s):  
Davide Lenaz ◽  
Bidyananda Maibam ◽  
Jacob Adetunji ◽  
Henrik Skogby
Keyword(s):  
Oxygen Fugacity ◽  
Electron Microprobe ◽  
South India ◽  
Structural Data ◽  
Structural Behavior ◽  
High Grade ◽  
Grade Metamorphism ◽  
High Grade Metamorphism ◽  
Mössbauer Data ◽  
Very High

We investigated the crystal and structural behavior of Cr-bearing spinels from the Archean chromitites of Sittampundi (India), which had been subjected to very high-grade metamorphism. The structural data show that their oxygen positional parameters are among the highest ever recorded for Cr-bearing spinels with similar Cr# and Mg# and very similar to those found for other Archean occurrences. The general agreement between electron microprobe and Mössbauer data indicates that the analyzed spinels are stoichiometric. It is therefore most likely that the PH2O and Ptotal values as well as both the oxygen fugacity and the temperature reached during high-grade metamorphism inhibited the possibility of the non-stoichiometry of chromites, contrary to what can happen in ophiolites, where non-stoichiometry has recently been documented.

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