Bündner schist
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Lukmanier pass (Switzerland
).The Bündner schist or Bündner slate (
marine sediments that underwent metamorphism
at large depths.
The Bündner schists were deposited in the two small oceanic basins (the
deformation turned them into calcareous phyllites and schists, strongly foliated rocks rich in micas
.
The Bündner schists can be found throughout the Penninic zone of the Alps, often forming zones of high
strain between or large infolded synclines (so called Mulde or Mulden) in the crystalline nappes that are made of more competent gneiss.[1]
Bündner schists are often found along ophiolites. The contacts between the two types of rock have always seen many phases of folding and are complex.
References
- ISBN 3-7225-0007-9; p. 89.