|LC Classifications||QE 191 S559 1996 thesis|
|The Physical Object|
|Number of Pages||211|
The often rarely preserved flow top breccia and pillow margin zones in some komatiite flows are essentially volcanic glass, quenched in contact with overlying water or air. Because they are quenched, they represent the liquid composition of the komatiites, . of cooling and crystallization in an actively flowing komatiite lava. The present paper investigates the processes of cooling and crystallization in komatiite lavas after they come to rest. We consider the influence that convective motions, arising from cooling and crystallization within the magma after emplacement, might have on the. Cooling crystallization is more generally define as the formation of solid with desirable and consistent properties from a solution, where the solubility line is highly sensitive to decrease of temperature. It is widely used in pharmaceutical, petrochemical, semiconductor industry. Crystallization is often conducted in batches rather thanFile Size: KB. Komatiite Explained. Komatiite is a type of ultramafic mantle-derived volcanic rock defined as having crystallised from a lava with ≥ 18 wt% ites have low silicon, potassium and aluminium, and high to extremely high magnesium content. Komatiite was named for its type locality along the Komati River in South Africa, and frequently displays spinifex texture composed of large.
However, this model cannot explain the occurrence of spinifex textute within thick komatiite flows well below the upper chilled crust. Large skeletal crystals may have crystallized at depths, many metres below the surfaces of the flows (Fig. 3) where cooling rates must have been low. Thicker flows cooled more slowly and developed peridotite--pyroxenite--gabbro cumulate successions by processes similar to those active in intrusive rocks. The Proterozoic layered flows of Cape Smith, Québec, crystallized from basaltic komatiite and magnesian basaltic by: 9. Diagram illustrating changes in cooling rate and thermal gradient during the crystallization of the upper part of a komatiite flow. In the calculation there was 50 C of undercooling at the time of Author: Francois Faure. Powder Technology –Ž. caterpowtec Continuous cooling crystallization from solution Hakan Gros˚¨a,), Teuvo Kilpio b, Juha Nurmi c a Cultor Food Science, Xyrofin DiÕision, KantÕik, Finland b Cultor Food Science Technology DeÕelopment, KantÕik, Finland c Cultor Food Science Technology DeÕelopment, KantÕik, Finland.