The Chilas complex is one of the largest layered igneous complexes at the Earth's surface. Much of it shows spectacular rhythmic layering - formed by the settling out of crystals on the floor and sides of a magma chamber. Other parts, once at the floor of the chamber - show ultramafic blobs and pods. Early crystallised magma can fall back into the chamber to form blobby lumps (xenoliths). And then later batches of magma can intrude - such as the spectacular coarse hornblende pegmatites.
