metamorphic zone

metamorphic zone

[¦med·ə¦mȯr·fik ′zōn]
(geology)
References in periodicals archive ?
The study area is a part of Zagros Orogeny and located in the Sanandaj-Sirjan metamorphic Zone (SSMZ).
The southwest areas of Azna plain is located in Zagros zone tectonically and the north-eastern zone of is located in metamorphic zone of Sanandaj-Sirjan.
Wollastonite is a major component of the metamorphic zone on the west side of the sanbornite-rich veins.
Incremental counts were made of the leptocephalus growth zone, the metamorphic zone, the glass-eel growth zone, and from the "elver" check (transition mark) to the edge of the otolith (see Cieri and McCleave, 2000).
Suriname's portion of the Shield consists of two high-grade metamorphic zones in the western part of the country, and a semi-circular low-grade metamorphic zone stretching from the southeast to the northwest.
The metabasites for the study were collected in one outcrop close to the Curpaga marble quarry, and belong to the staurolite-kyanite metamorphic zone. The thin section for microscopic analysis was performed at the Sample Preparation Laboratory of the School of Geology; the mineralogical and petrographic analysis of the sample was performed in a Nikon (Labophot2-POL) transmitted light microscope with trinocular viewing to establish the modal percentage of mineral constituents and mineral assemblages, with emphasis on textural relationships between mineral phases; photographs were taken with a NIKON AFX-DX microphotographic system at the Research Group in Basic and Applied Geology of the School of Geology.
Rios and coworkers (Rios, 1999, 2001, 2005; Rios and Takasu, 1999; Campos, 1999; Montenegro y Barragan, 1999; Garcia y Campos, 2000; Rios and Garcia, 2001; Castellanos, 2001; Mantilla et al, 2001, 2002, 2003; Gelvez and Marquez, 2002; Rios et al 2003a, 2003b, 2008a, 2008b; Cardona, 2003; Castellanos et al., 2004, 2008, 2010; Garcia et al, 2005; Gomez y Avila, 2006) have conducted in the last decade numerous studies on the geological evolution of the different metamorphic units outcropping in the Santander Massif, emphasizing on the metamorphic rocks of the Silgara Formation, modifying the classic scheme of metamorphic zones and isograds proposed by Ward et al.
Tectonic stacking of metamorphic zones in Cheticamp River area, Cape Breton Highlands, Nova Scotia.
But if 2D deformation occur around natural metamorphic zones, e.g.
Among the scientific accomplishments of the Coast Mountains project were the discovery of "tadpole" granitic plutons, demonstrating the generation of granite in deep root zones leading to bodily upward movement in the dilatant "heads"; and the discovery of the then youngest high temperature-high pressure metamorphic zones in the circum-Pacific.