Igneous rocks are either intrusive or extrusive. Extrusive igneous rocks come from the mantle and reach the earth's surface usually in a volcanic eruption. Intrusive igneous rocks also originate in the mantle but cool before they reach the surface. These are called Plutonic igneous rocks.Andesite...
aVarious sedimentary strata, igneous and metamorphic rocks ranging from Precambrian to Tertiary ages are distributed in Korean peninsula. About half areas are occupied by the Precambrian metamorphic and Mesozoic plutonic rocks.In the South Korea(SA),the Precambrian rocks are distributed in the Kyeonggi...
Magma mixing model for the genesis of middle crust in the Izu–Bonin–Mariana arc: evidence from plutonic rocks in the Mineoka-Setogawa ophiolitic mélange... A Paleogene accretionary complex, the Mineoka–Setogawa belt is distributed adjacent to the northern portion of the collision zone between...
Teofilndia granitoids are representative of the Paleoproterozoic plutonic rocks, which intruded the Serrinha block, an Archean crustal fragment of the Sao Francisco Craton (Bahia, Brazil). Three plutons were emplaced, the Teofilndia granodiorite, the Barrocas trondhjemite and the Santa Rosa granite, ...
Plutonic rocks within the Lloyds River Fault Zone comprise two suites dated at 464 ± 2 plus 462 ± 2 and 459 ± 3 Ma, respectively. The younger age of the plutons with respect to some of the amphibolites, evidence for magmatic deformation, and the elongate nature of the plutons ...
(Goto et al.2004) and many others. Most of the information about this rock suite derives from the study of Palaeozoic eroded plutonic complexes. The classification of these ultramafic lamprophyres is challenging. The rocks are generally chemically inextricable but share different mineral associations ...
USE OF ZIRCON GEOCHEMISTRY TO TIE VOLCANIC DETRITUS TO SOURCE PLUTONIC ROCKS: AN EXAMPLE FROM PERMIAN NORTHWESTERN SONORA, MEXICOUSE OF ZIRCON GEOCHEMISTRY TO TIE VOLCANIC DETRITUS TO SOURCE PLUTONIC ROCKS: AN EXAMPLE FROM PERMIAN NORTHWESTERN SONORA, MEXICOUSE OF ZIRCON GEOCHEMISTRY TO TIE VOLCANIC DE...
During this second event the dynamo-thermal structure was much more classical and not controlled by the occurrence of the Cretaceous metaplutonic rocks. A tentative model of the thermal structures during the major events which affected the Kohistan arc is proposed....
Dataset of geochemical data from iron oxide alkali-altered mineralising systems of the Great Bear magmatic zone, Northwest Territories The Great Bear magmatic zone is a Paleoproterozoic calc-alkaline to shoshonitic volcano-plutonic belt in the Northwest Territories of Canada. The region hosts regional...
Excellent outcrops in Dronning Maud Land, Antarctica, provide unique insight into the mode and extent of fluid infiltration into metamorphic and plutonic rocks in the middle crust. The fluids are liberated from pegmatitic veins and give rise to alteration halos. In the alteration halos, the ...