underbury

Etymology
From.

Verb

 * 1)  To bury beneath; bury under.
 * 2) * 1907, Mining and Engineering World - Volume 26 - Page 531:
 * The identification of faults, or fractures along which there has been movement is especially desirable, inasmuch as fractures of this type extend more deeply than others, and usually constitute the channels for the upward circulation of the original mineralized hot waters, volcanic vapors. etc., from the underburied igneous magmas, and for the descent of the impoverishing and enriching surface waters.
 * The identification of faults, or fractures along which there has been movement is especially desirable, inasmuch as fractures of this type extend more deeply than others, and usually constitute the channels for the upward circulation of the original mineralized hot waters, volcanic vapors. etc., from the underburied igneous magmas, and for the descent of the impoverishing and enriching surface waters.