Basalts of phases 3 and 4 have undergone moderate fractional crystallization.
This linear relationship, moreover, could indicate both degrees of partial melting and different degrees of fractional crystallization [2,16].
The process pathway of fractional crystallization of salts from the system of LiCl[O.sub.4]-NaCl-[H.sub.2]O defined in this way leads to creation of the following process/state structure shown in Figure 4.
The analysis of the process of fractional crystallization, primarily that of lithium perchlorate trihydrate, from the system of NaCL-LiCl[O.sub.4]-[H.sub.2]O, which is shown in the feasible process structure (Figure 4), was performed based on the results of the material balance simulation of the total process system.
The contrast in fractional crystallization trends between trachyte and rhyolite is highlighted by the CaO-[K.sub.2]O-[Na.sub.2]O ternary diagram (Fig.
The REE patterns of the rhyolite are characterized by a pronounced negative Eu anomaly (average Eu/[Eu.sup.*] = 0.08), consistent with low-pressure fractional crystallization of alkali and/or plagioclase feldspar.
Phase equilibria predict that intermediate and felsic rocks can originate by fractional crystallization
of a more basic parent because the early fractionation of olivine, clinopyroxene and plagioclase drives the liquid toward more silicic compositions (Fig.
Although fractional crystallization
is seen as the dominant process yielding highly evolved rocks (e.g., Prestvik et al., 2001), other magma chamber processes can be important.
5-9, 11, 12) are modeled assuming that the MBG and MPG were produced by extensive low-T fractional crystallization
of the same parental magma, rather than from two batch-melts that evolved separately.
There were essentially two significant questions regarding data fitting: 1) where to assign t = 0 for the fit ([[tau].sub.0]) and 2) what range of fractional crystallization
The fresh granodiorite samples define distinct variation trends for some major and trace elements where plotted against [SiO.sub.2] (Fig.5) or other differentiation indices, suggesting that the rocks underwent fractional crystallization
. Large variation of Sr accompanied by relatively constant Rb/Sr (not shown) and Mg/Rb ratios with increasing [SiO.sub.2] (Fig.
A correlation between decreasing [epsilon]-Nd ([approximately equal to] -2 to 5) and increased fractionation within the suite is best explained by mid-crustal (current exposed emplacement depth) assimilation and fractional crystallization