porphyritic


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Related to porphyritic: groundmass, Pegmatitic Texture

porphyritic

[¦pȯr·fə¦rid·ik]
(petrology)
Pertaining to or resembling porphyry.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
This will result in a better understanding of the significance of the disseminated, sulphidized, Cu-Au porphyritic intrusions discovered in Phase 1 of 2019.
The breccia consists in porphyritic clasts within an oxidized matrix.
Comparing Tables 1 and 2, the micromechanical parameters (p1, p2, and p3) in Table 2 correspond to the mechanical properties (number 2 porphyritic granodiorite, number 3 granodiorite, and number 10 granodiorite porphyry) in Table 1.
The southeastern zone is dominated by various gneissic granitoids and minor bodies of porphyritic granites, while the northwestern zone is dominated by late granitoids intrusions and early gneissic rocks with subordinate schist [1].
The basement of Zhaxikang is composed of dolerite, quartz diorite, rhyolite porphyry, pyroclastics, and porphyritic monzogranite [5], and these crust-derived igneous rocks have the similar Fe isotopic composition with granites according to the data from previous studies [21-23, 28, 36-45].
The Novosibirsk massif is composed of porphyritic biotite granites, granosyenites and biotite-containing leucogranites (Mochishche stock).
Above it hangs a monochrome pastel study by Degas of a female nude, and flanking it is a near black porphyritic diorite Predynastic Egyptian pot of around 3000 BC (Fig.