-
Outcrops of
Ediacaran micaschists and
marble (c. 600 Ma) in the
eastern Pyrenees (commune of Fontpédrouse, France)....
- Pe, Cn, Dv, Or, Kb: Permian, Carboniferous, Devonian,
Ordovician & Silurian, Cambrian. MS, Gn, Gr:
micaschists, gneiss, granite. Bold lines: faults...
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ultramafic rocks, metajaspillites, metahematites, quartzites,
quartz schists,
micaschists, gneisses, migmatites, amphibolites, granites, charnockites, eclogites...
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consists like the Saint-Mathieu dome
largely of
intrusive rocks rimmed by
micaschists of the PMU. With 160
kilometers it has a much
larger meridional extension...
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mainly composed of the
Paramaca series,
which corresponds to a
series of
micaschists,
aluminous paragneisses and
black quartzites whose total thickness is...
-
dominated by
crystalline schists (mostly diaphthorites, phyllonites,
biotite micaschists and gneisses,
amphibolites and migmatites).
Extensive Late Paleozoic...
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corner the Thiviers-Payzac Unit. The
Lower Gneiss Nappe mainly comprises micaschists ****ociated with
micaceous paragneisses,
paragneisses and medium-grained...
- Unit
overthrusts the
Parautochthonous Micaschist Unit.
Parautochthonous Micaschist Unit (PMU).
Mainly micaschists, but also
minor quartzites, occasional...
- rocks:
greenstone (gabbros, granites) and
metamorphic rocks (gneiss,
micaschists, amphibolites, eclogites). Sandy-gravel soils, on
locally fossiliferous...
- two
distinct geological zones. Downstream, the area is
underlain by
micaschists and
quaternary sediments,
offering little resistance to erosion, and...
