Fine-grained, blue-green, sedimentary texture.
Slaty cleavage.
Some patches of lighter and finer-grained material.
Slaty cleavage due to the alignment of chlorite and muscovite.
Cross-cut by the blobs of the fine-grained material. These are orange-brown in thin-section. Could be water-lain ash, ripped-up to form clasts.
Very fine-grained, brown matrix, probably volcanic ash.
Carbonate, quartz and opaque clasts slightly larger than the matrix.
Fine-grained, blue-green, sedimentary texture.
Slaty cleavage.
Some patches of lighter and finer-grained material.
Slaty cleavage due to the alignment of chlorite and muscovite.
Cross-cut by the blobs of the fine-grained material. These are orange-brown in thin-section. Could be water-lain ash, ripped-up to form clasts.
Very fine-grained, brown matrix, probably volcanic ash.
Carbonate, quartz and opaque clasts slightly larger than the matrix.