scholarly journals MORB differentiation: In situ crystallization in replenished-tapped magma chambers

2015 ◽  
Vol 158 ◽  
pp. 147-161 ◽  
Author(s):  
L.A. Coogan ◽  
M.J. O’Hara
Keyword(s):  
Magma Chambers ◽  
In Situ Crystallization

Origin of non-cotectic cumulates: A novel approach

Geology ◽  
2020 ◽  
Vol 48 (6) ◽  
pp. 604-608 ◽  
Author(s):  
R.M. Latypov ◽  
S.Yu. Chistyakova
Keyword(s):  
Phase Equilibria ◽  
Basaltic Magma ◽  
Parental Magma ◽  
Magma Chambers ◽  
Mechanical Mixing ◽  
Novel Approach ◽  
In Situ Crystallization ◽  
Mechanical Separation ◽  
Novel Concept

Abstract Plutonic mafic complexes are composed of cumulates in which minerals mostly occur in cotectic proportions. This is consistent with a concept that basaltic magma chambers predominantly crystallize in situ from margins inward. However, cumulates with two (or more) minerals in proportions that are at odds with those expected from liquidus phase equilibria also locally occur in these complexes. Such non-cotectic cumulates are commonly attributed to either mechanical separation of minerals crystallizing from the same parental magma or mechanical mixing of minerals originating from different parental magmas. Here we introduce a novel concept that does not require any of these processes to produce non-cotectic cumulates. The model involves melts that start crystallizing upon their cooling, while ascending along feeder conduits from deep staging reservoirs toward the Earth’s surface. Depending on the degree of cooling, the melts become successively saturated in one, two, and more liquidus phases. Given that most crystals are kept in suspension, the resulting magmas would contain a cargo of equilibrium phenocrysts in notably non-cotectic proportions. The replenishment of basaltic chambers developing through in situ crystallization by such magmas is likely responsible for the occasional formation of non-cotectic cumulates in plutonic mafic complexes.

Maturation of Brushite (CaHPO4·2H2O) and In Situ Crystallization of Brushite Micro-Granules

2013 ◽  
pp. 77-91
Author(s):  
Matthew A. Miller ◽  
Matthew R. Kendall ◽  
Manoj K. Jain ◽  
Preston R. Larson ◽  
Andrew S. Madden ◽  
...  
Keyword(s):  
In Situ Crystallization

Geochemical consequences of in situ crystallization

Nature ◽  
1989 ◽  
Vol 340 (6230) ◽  
pp. 199-205 ◽  
Author(s):  
Charles H. Langmuir
Keyword(s):  
In Situ Crystallization

scholarly journals In-situ crystallization of particles in a counter-current spray dryer

2016 ◽  
Vol 27 (6) ◽  
pp. 2299-2307 ◽  
Author(s):  
S. Shakiba ◽  
S. Mansouri ◽  
C. Selomulya ◽  
M.W. Woo
Keyword(s):  
Spray Dryer ◽  
In Situ Crystallization ◽  
Counter Current

In Situ Crystallization and Growth Dynamics of Acentric Iron Iodate Nanocrystals in w/o Microemulsions Probed by Hyper-Rayleigh Scattering Measurements

2010 ◽  
Vol 115 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Yannick Mugnier ◽  
Latifa Houf ◽  
Moustafa El-Kass ◽  
Ronan Le Dantec ◽  
Rachid Hadji ◽  
...  
Keyword(s):  
Rayleigh Scattering ◽  
Growth Dynamics ◽  
Scattering Measurements ◽  
In Situ Crystallization

Comment and Reply on "Nd isotopic gradients in upper crustal magma chambers: Evidence for in situ magma-wall-rock interaction"

Geology ◽  
1991 ◽  
Vol 19 (2) ◽  
pp. 185
Author(s):  
Benjamin C. Schuraytz ◽  
Thomas A. Vogel ◽  
Leland W. Younker ◽  
G. Lang Farmer ◽  
Kathryn J. Tegtmeyer
Keyword(s):  
Wall Rock ◽  
Magma Chambers ◽  
Rock Interaction ◽  
Crustal Magma
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