Comment on: ?High-temperature dehydration melting and decompressive P?T path in a granulite complex from the Eastern Ghats India? by S. Bhattacharya and R. Kar

2004 ◽  
Vol 147 (1) ◽  
pp. 123-125 ◽  
Author(s):  
P. Sengupta ◽  
M. M. Raith ◽  
S. Dasgupta
Keyword(s):  
High Temperature ◽  
Eastern Ghats ◽  
Dehydration Melting ◽  
Granulite Complex ◽  
T Path

Extremely high-temperature calcareous granulites from the Eastern Ghats, India: Evidence for isobaric cooling, fluid buffering, and terminal channelized fluid flow

1995 ◽  
Vol 7 (3) ◽  
pp. 689-704 ◽  
Author(s):  
Santanu Kumar Bhowmik ◽  
Sοmnath Dasgupta ◽  
Stephan Hoernes ◽  
Prasanta Kumar Bhattacharva
Keyword(s):  
Fluid Flow ◽  
High Temperature ◽  
Eastern Ghats ◽  
Cooling Fluid

Mafic Granulites from the Eastern Ghats, India: Further Evidence for Extremely High Temperature Crustal Metamorphism

1991 ◽  
Vol 99 (1) ◽  
pp. 124-133 ◽  
Author(s):  
Somnath Dasgupta ◽  
Pulak Sengupta ◽  
M. Fukuoka ◽  
P. K. Bhattacharya
Keyword(s):  
High Temperature ◽  
Eastern Ghats

Very high temperature, moderate pressure metamorphism in the New Russia gneiss complex, northeastern Adirondack Highlands, metamorphic aureole to the Marcy anorthosite

1999 ◽  
Vol 36 (1) ◽  
pp. 1-13 ◽  
Author(s):  
J Alcock ◽  
Peter Muller
Keyword(s):  
New York ◽  
High Temperature ◽  
Moderate Pressure ◽  
Dehydration Melting ◽  
Eastern Margin ◽  
Gneiss Complex ◽  
Anorthosite Massif ◽  
Metamorphic Gradient ◽  
High Temperature Metamorphism ◽  
Very High

The New Russia gneiss complex in the northeastern Adirondack Highlands of New York includes meta-anorthosite gneiss and anatectic gneiss derived from metagabbro, mangerite, and charnockite. Metamorphic conditions during anatexis (850-950°C, highest near the anorthosite, with pressure ~750 MPa) are inferred from minerals and textures produced by dehydration melting of pargasitic hornblende and from ternary feldspar in anatectic segregations. The complex abuts and is crosscut by the eastern margin of the ~1130 Ma Marcy anorthosite massif. The crosscutting contact, the presence of meta-anorthosite gneiss within the complex and undeformed meta-anorthosite in the massif, and the occurrence of deformed and undeformed anatectic segregations within the New Russia gneisses indicate an approximate synchroneity of penetrative deformation, very high temperature metamorphism, and emplacement of anorthosite with both intrusion and anatexis outlasting deformation. The position of the New Russia gneisses, the metamorphic gradient within them, and the contemporaneity of anatexis with intrusion of anorthosite imply that the complex is the metamorphic aureole of the Marcy anorthosite.

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