Subjacent

The sedimentary beds contain pebbles of the subjacent granite.

It was waning towards evening; there was still a faint mist, but it had cleared a little except in the damper tracts of subjacent country and along the river-courses.

In some places, however, quartz reefs, payably auriferous while in Silurian rock, have been followed down to subjacent granite, and have there been found to thin out and become unprofitable […]

Since the times of the Spanish conquest of the Americas, however, there had always been a subjacent stream of travel literature which had queried the civilizing function of Western penetration of such societies.

[in relation to the second floor flat in a tenement building] the subjacent first floor and ground floor flats were ... owned by the first defenders.