scholarly journals A new petrogenetic model for low-Ca boninites: Evidence from veined sub-arc xenoliths on melt-mantle interaction and melt fractionation

2012 ◽  
Vol 13 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
A. Bénard ◽  
D. A. Ionov
Keyword(s):  
1962 ◽  
Vol 99 (6) ◽  
pp. 558-569 ◽  
Author(s):  
Peter J. Wyllie

AbstractBowen's petrogenetic grid is a PT projection containing univariant curves for decarbonation, dehydration, and solid-solid reactions, with vapour pressure (Pf) equal to total pressure (Ps). Analysis of experimental data in the system MgO–CO2–H2O leads to an expansion of this grid. Three of the important variables in metamorphism when Pf = Ps are P, T, and variation of the pore fluid composition between H2O and CO2. These can be illustrated in a three-dimensional petrogenetic model; one face is a PT plane for reactions occurring with pure H2O, and the opposite face is a similar plane for reactions with pure CO2; these are separated by an axis for pore fluid composition varying between H2O and CO2. Superposition of the PT faces of the model provides the petrogenetic grid. The reactions within the model are represented by divariant surfaces, which may meet along univariant lines. For dissociation reactions, the surfaces curve towards lower temperatures as the proportion of non-reacting volatile increases, and solid-solid reaction surfaces are parallel to the vapour composition axis and perpendicular to the PT axes. The relative temperatures of reactions and the lines of intersections of the surfaces can be illustrated in isobaric sections. Isobaric sections are used to illustrate reactions proceeding at constant pressure with (1) pore fluid composition remaining constant during the reaction, with temperature increasing (2) pore fluid composition changing during the reaction, with temperature increasing, and (3) pore fluid changing composition at constant temperature. The petrogenetic model provides a convenient framework for a wide range of experimental data.


2013 ◽  
Vol 48 (5) ◽  
pp. 819-853 ◽  
Author(s):  
Francis M. McCubbin ◽  
Stephen M. Elardo ◽  
Charles K. Shearer ◽  
Alexander Smirnov ◽  
Erik H. Hauri ◽  
...  

2020 ◽  
Vol 94 (S1) ◽  
pp. 7-7
Author(s):  
Hanlin CHEN ◽  
Shufeng YANG ◽  
Zilong LI ◽  
Xing YU ◽  
Yinqi LI

Lithos ◽  
1968 ◽  
Vol 1 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Eric Middlemost
Keyword(s):  

2017 ◽  
Vol 60 (10) ◽  
pp. 1805-1816 ◽  
Author(s):  
Xing Yu ◽  
ShuFeng Yang ◽  
HanLin Chen ◽  
ZiLong Li ◽  
YinQi Li

1973 ◽  
Vol 14 (2) ◽  
pp. 327-337 ◽  
Author(s):  
R. G. CAWTHORN ◽  
E. B. CURRAN ◽  
R. J. ARCULUS

2000 ◽  
Vol 42 (12) ◽  
pp. 1116-1132 ◽  
Author(s):  
Hetu C. Sheth ◽  
Ignacio S. Torres-Alvarado ◽  
Surendra P. Verma

Sign in / Sign up

Export Citation Format

Share Document