The Laguigangri Group crops out in the core of the Yelaxiangbo dome and is composed of schist, gneiss, and migmatite
units (Figure 1(b)).
Prominent rock units include granite gneiss, migmatites
, schist/ quartz schist, porphyritic granite, fine-medium grained granite and charnockite.
Low-pressure cordierite-bearing migmatites
from Kellys Mountain, Nova Scotia.
The Bedonia Project is underlain by rocks of the Proterozoic Mount Andrews Migmatites
and contains a number of magnetic features (ten current targets) that may be related to intrusive mafic rocks (the host rocks for the Nova nickelcopper discovery).
Carbon content (kg m-2, 0-30cm depth) in dominant soil units in PNM C (kg m-2) Umbric Leptosols of granites 18.2 Umbric Cambisols of schists 17 Umbric Cambisols of granites 7.6 Umbric Leptosols of basic rocks 6.9 Umbric Leptosols of schists 5.0 Chromi Luvisols of basic rocks 4.6 Dystric Fluvisols of alluvium 4.6 Dystric Leptosols of migmatites
2.6 Dystric Cambisols of migmatites
2.5 Eutric Leptosols of ulti amafie rocks 2.2 Haplic Alisols of sedimentary deposits 2.2 Eutric Leptosols of ultramafic rocks 2.2 Dystric Cambisols of sedimentary.
Within the Garzon Massif the plutonic bodies intrude Precambrian high grade metamorphic rocks whereas in the Upper Magdalena Valley, plutonic rocks intrude migmatites
of unknown age (Alvarez, 1981; Kroonemberg, 1982; Alvarez and Linares, 1983; Velandia et al, 2001a, 2001b; Jimenez et al., 2006).
the GAC publication The Dynamics of Epeiric Seas, and the Atlas of Migmatites
published by MAC), textbooks (e.g.
Paramagnetic and ferromagnetic AMS in migmatites
: Measurements in high and low fields and kinematic implications.
(2004), these soils were developed both from Devonian sedimentary rocks (Ponta Grossa Formation) and from Precambrian rocks such as subalcaline granites, syenites, and migmatites
. The terrain is gently sloping to undulating, with slopes mostly <6%.
This atlas of migmatites
, heterogeneous rocks often found in continental crusts, is designed for geologists and mineralogists who need a reference for identifying and classifying these substances in the field.
The Vijayan Complex rocks consists of mainly granitic gneisses, hornblende biotlite gneisses, and migmatites
formed under amphibolites facies, and are mainly confined to the eastern sector.
The latter often contains migmatites
or small bodies of enderbitic composition, otherwise plagioclase-potassium-feldspar leucosomes and granites prevail.