poikilitic

Related to poikilitic: ophitic, trachytic, poikiloblastic

poikilitic

(ˌpɔɪkɪˈlɪtɪk)

adj

(Geological Science) geology relating to the presence of crystals within the structure or texture of a rock, or specifically to the Permo-Triassic system of rocks

References in periodicals archive ?

Schistose amphibolite and metagabbro are represented by fine-grained, equigranular rocks of granonematoblastic, nematoblastic, relict gabbro, poikilitic texture.

PETROPHYSICAL PROPERTIES OF THE PECHENGA ROCKS OF DIFFERENT METAMORPHIC FACIES

However, above 25%, carbonate crystals fill the void space and pore throats with poikilitic cement.

Logging Characteristics and Identification Methods of Low Resistivity Oil Layer: Upper Cretaceous of the Third Member of Qingshankou Formation, Daqingzijing Area, Songliao Basin, China

In some rocks, the perthite is poikilitic and encloses plagioclase and quartz grains.

Geology and petrography of the Nagar Parkar Igneous Complex, southeastern Sindh: the Wadhrai body

The gypsum crystals are often poikilitic but with an occasional lozenge-shaped crystalline habit and there are anhydrite relicts within some gypsum crystals.

New evidence of the quaternary history of Abu Dhabi: A pleistocene evaporite deposit near yas Island

The plutonic rocks are mostly granular in texture; however other textures such as graphic and poikilitic textures are present.

Magmatic evolution and compositional characteristics of tertiary volcanic rocks associated with the Venarch manganese mineralization, Sw Qom, Central Iran/Evolucion Magmatica y caracteristicas de composicion en rocas volcanicas terciarias asociadas con la mineralizacion de manganeso en la mina de Venarch, al Suroeste de Qom, en la Region Central de Iran

9), while amphibole and sanidine appear as interstitials sometimes developing poikilitic crystals.

Phreatomagmatic activity and associated hydrothermal processes in the lamproitic volcano of Cancarix (Southeast Spain)

Thees gabbros have granular, poikilitic and cumulative textures (Fig.

Economic geology, petrogeraphy and geochemical dispersion of volcanic rocks in Noorabad ophiolite (Northwest Lorestan, West Iran)

("Poikilitic" refers to a texture in which small crystals of one mineral are irregularly scattered within a larger anhedral crystal of another mineral.) The name, given by Kupletsky in 1932, is for Rischorr in the Khibina complex, Kola Peninsula, Russia.

The Palitra pegmatite: a newly discovered hyperalkaline pegmatite in the Lovozero massif, Kola Peninsula, Russia

Large poikilitic hornblende and in some cases plagioclase overgrow the cumulates.

Emplacement of the Fogo Island Batholith, Newfoundland

In the course of further evolution, the grains become poikilitic and finally autonomous and almost free of inclusions.