subfacen.

1822 G. Woodley View Present State Scilly Islands ii. v. 330 On this stands an immense block, about fifty four feet in circumference and about eleven feet high from its subface, which does not press on the lower mass with more than half its breadth.

1926 R. M. Chalmers Geol. Maps vi. 41 Obviously, the superface of a bed is in contact with the subface of the younger or overlying bed.

1935 Q. Jrnl. Geol. Soc. 91 472 The greater soda increment occurs at the subface of the smaller sill.

2003 Y. A. Gelfgat et al. Adv. Drilling Solutions II. iv. 50 Sometimes a deflecting tool was used to make several bit runs below the subface of the stratum.

1826 W. Kirby & W. Spence Introd. Entomol. III. 366 Subfacies (the Subface). The lower surface or underside of the head.

1832 J. Stephenson Med. Zool. & Mineral. 184 Fig. (a) represents the head of the Scolopendra Morsitans, subface.