crystallines

The well exposed bedrock comprises crystallines of the Vaikrita group with sedimentary, mica schist and shale rocks.

Nanda Devi and Valley of Flowers National Park, India

Most of the Park falls within the central crystallines, a zone of young granites and metamorphic rocks.

Nanda Devi and Valley of Flowers National Park, India

Great faults have sometimes brought ancient crystalline rocks in contact with weaker and younger sedimentary rocks, and long after erosion has destroyed all fault scarps the harder crystallines rise in an upland of rugged or mountainous country which meets the lowland along the line of faulting.

The Elements of Geology

Remnants of sandstone occur in places on the north of the great fault, and are here seen to rest on the worn and fairly even surface of the crystallines.

The Elements of Geology