Most of the mineralisation is associated with steep westerly-dipping, north-trending pegmatitic quartz-feldspar veins identified within variably deformed gneissic
rocks and schist.
Granitic and Gneissic
Outcrops (Inselbergs) as Centers of Diversity for Desiccation-Tolerant Vascular Plants.
The lithology in both aquifers is either migmatitic, gneissic
, quartzitic, or schistose.
Fluoride-rich waters are associated with sediments of marine origin in mountainous areas and volcanic, granitic, and gneissic
It is either massive or has a gneissic
banding formed by alternating leucocratic and amphibole-bearing melanocratic layers.
Miles and de Kimpe (1988) identified low-charge corrensite in the Ap, Ah and Bw horizons of Cambisols developed on till derived from granitic rocks and till derived from marble with high amount of granitic and gneissic
All of these are mixed with gneissic
igneous acidic and, above all, by the basic ultramafic rocks (Vera & al, 2004).
For the 3D FEM modelling, more generalized rock mass properties are used, as the rock material is migmatitic gneiss containing both gneissic
and granitic sections.
16 [km.sup.2]) consists mostly of a rolling elevated plateau (140-230 m a.s.l.) above steep gneissic
According to Ab'Saber (1974) a strong erosional process took place in the region during the Tertiary period, exposing the pre-cambrian granitic and gneissic
basement of the region and resulting in a degraded (geologically speaking) landscape composed mostly of areas of low altitude.
The older rocks in this massif include the gneissic
basement of the Cocha--Rio Tellez Complex and associated meta-sedimentary rocks considered Precambrian and Paleozoic in age (Murcia and Cepeda, 1983; Ponce, 1979).
Majority of Kodaganar basin (around 65%) has gneissic