nematoblastic

[¦nem·ə·də¦blas·tik]

(petrology)

Pertaining to a metamorphic rock with a homeoblastic texture due to development during recrystallization of slender prismatic crystals.

References in periodicals archive ?

The compositional banding is reflected by alternating nematoblastic (hornblende) and granoblastic (plagioclase) bands, within which epidote-group minerals and garnet porphyroblasts occurs.

The compositional banding is reflected in alternating hornblende-bearing nematoblastic and plagioclase-bearing granoblastic bands, within which epidote-group minerals and garnet porphyroblasts occur.

Petrology, geochemistry and geochronology of the Arquia Complex's metabasites at the Pijao-Genova sector, Central Cordillera, Colombian Andes

However, most of the studied metabasites are nematoblastic amphibolites, consisting of Amp, Ep, Rt, Chl, Qz [+ or -] Grt [+ or -] white-mica [+ or -] Cb and Ilm [+ or -] Ttn after Rt.

Structure of the Andean Palaeozoic basement in the Chilean coast at 31[degrees] 30' S: geodynamic evolution of a subduction margin

The textures in the rocks are nematoblastic and granoblastic.

The textures found in the rocks are nematoblastic, granoblastic and porphyroblastic.

The nematoblastic texture is defined by its preferential orientation of hornblende (Figure 3e).

Pressure-temperature path of Arquia Group rocks (NW Colombia): a petrographic analysis from mineral assemblages

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