The black layers in the sequence contain microfossils that are 1.9 to 2.3 billion years in age.

Scrape the edge where it joined the cob and look for a thin black layer that forms when the corn is ready.

I see a red cliff with a black layer in it, like a wide stripe.

The flat-bottomed boat was waiting for them, drawn up on a black layer of pine needles under the tall trees.

For example, thinning the top black layer on a three-layer stone changes its color to shades of brown.

With Polachrome, the black negative layer was discarded after processing.

During winter, when organisms die, carbon is deposited down, resulting to a black layer.

Two heavy, immiscible layers, black and white, swaying in the glass.

Traditional mircata consists of several brown and few black layers, resembling wood.

The skirt is layers of mousseline in fuchsia, red and black.