In contrast, the metaluminous megacrystic Magaguadavic Granite, with an ASI of 0.9 and [[epsilon].sub.Nd] (400 Ma) of + 2.0, has 'I-type' characteristics and its generation can be attributed to partial melting of metaigneous
rocks in the lower crust (Chappell and White 1974; Whalen et al.
ROCKS OF SPITSBERGEN Carbonate rock 5 536,36 [km.sup.3] Sandstone & Psammite 4 211,46 [km.sup.3] Mudstone & Shale 1 945,44 [km.sup.3] Siltstone 1 232,27 [km.sup.3] Conglomerate & Breccia 660,73 [km.sup.3] Evaporite 134,45 [km.sup.3] Metaigneous
rock 727,31 [km.sup.3] Quartzite 699,39 [km.sup.3] Metasediment 593,22 [km.sup.3] Schist 584,03 [km.sup.3] Marble 413,18 [km.sup.3] Amphibolite 346,41 [km.sup.3] Gneiss 270,03 [km.sup.3] Granite 521,18 [km.sup.3] Plutonite 117,06 [km.sup.3] Vulcanite 25,19 [km.sup.3] Unknown 534,65 [km.sup.3] Total 18 552,36 [km.sup.3]
Bea et al., 1999; Villaseca and Herreros, 2000) emplaced within Neoproterozoic to Palaeozoic metaigneous
and metasedimentary series, which represent the innermost continental region of the Iberian Variscan Belt (Fig.
Geochemistry and tectonic setting of igneous and metaigneous
rocks of north Venezuela.
The Karakoram Metamorphic Complex forming the southern margin of the Karakoram consists of various metasedimentary (Hunza schists and dominantly Hunza limestone) and metaigneous
granodiorite rocks, which show a complex polyphase evolution of deformation and metamorphism (Bertrand and Debon, 1986; Searle, 1986).
The basement complex of Southwestern Nigeria predominantly composed of migmatite and granitic gneiss; quartzite; slightly migmatised to unmigmatised metasedimentary schist and metaigneous
rocks; charnockite; gabbro and diorite; and the members of the older granite suite, mainly granites, granodiorites, and syenites.
& ALVARADO, G.E., 1996: Mafic metaigneous
lower crust beneath Arenal volcano (Costa Rica): Evidence from xenoliths.- Bol.
(ii) slightly migmatised to non-migmatised metasedimentary and metaigneous
Topics on allochthonous belts include igneous and metaigneous
rocks, the exhumation history of two high-pressure belts, geothermal evidence for possible trench provenance, and evidence of a possible Jurassic rift zone.
GEOCHEMISTRY OF THE METAIGNEOUS
PUMPKINVINE CREEK FORMATION, ALLATOONA LAKE, GEORGIA.
As a result of these processes, metaigneous
mafic rocks may transfer into typical metamorphic rocks--amphibolites and gneisses.
(2012): Recycled metaigneous
crustal sources for S-and I-type Variscan granitoids from the Spanish Central System batholith: Constraints from Hf isotope zircon composition.