Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to petrologic: petrologist


The branch of geology that deals with the origin, composition, structure, and alteration of rocks.

pet′ro·log′ic (pĕt′rə-lŏj′ĭk), pet′ro·log′i·cal (-ĭ-kəl) adj.
pet′ro·log′i·cal·ly adv.
pe·trol′o·gist n.
Mentioned in ?
References in periodicals archive ?
Late Proterozoic rocks of Nagar Parkar, southeastern Pakistan: A preliminary petrologic account, In: Ahmed, R.
Research on Petrologic and Geochemical Characteristics of Eocene Oil Shale and Its Enrichment regularity, Huadian Basin.
Currently, the applications of resistivity in petrologic ally mainly focus on the electrical prospecting, anisotropy, moisture content, stress state and other aspects (Ferrero and Marini, 2001; Lebedev and Shepel, 1984).
Among the topics are seismic constraints on a double-layered asymmetric whole-mantle plume beneath Hawai'i, petrologic testament to changes in shallow magma storage and transport during 30+ years of reacharge and eruption at Kilauea Volcano, the role of bubbles in driving basaltic eruptions from reservoirs and conduits to the surface, the onset of basaltic explosive eruption from Kilauea's summit in 2008, and using airborne lidar and pre-eruptive topography to evaluate lava low surface morphology and thickness in Hawai'i.
Petrologic interpretation of granitoid rocks series using multicationic parameters.
V (1978): Petrofacies and petrologic evolution of the Late Cretaceous fore-arc basin, northern and central California.
Petrologic analysis of mineral pigments from hunter-gatherers archaeological contexts (Southeastern Pampean region, Argentina).
By withdrawing a smaller diameter core of rock from the ore body, geologist can analyze the core by chemical assay and conduct petrologic, structural and mineralogic studies of the rock samples.
Course of the Tertiary Teays River southwest of Lake Erie lowlands, USA: evidence from petrologic and lead istotopic characteristics of pebbles found in the northern Indiana Pipe Creek Sinkhole.
However, a non-destructive in-situ investigation of an inclusion in diamond is useful and important because: (a) some mineral inclusions under pressure could have a different crystal structure, and thus different petrologic significance compared to that at ambient pressure; (b) the internal pressure on the inclusion can provide information about the formation pressure of the diamond; (c) the morphology and growth relationships of the inclusion with the host diamond can provide indications about its protogenetic vs.