| 释义 |
Definition of onlap in English: onlapnoun ˈɒnlap Geology A progressive increase in the lateral extent of conformable strata in passing upwards from older to younger strata, so that each stratum is hidden by the one above; a set of strata exhibiting this.
verb ˈɒnlap Geology with object To cover (a stratum) so as to form an onlap.
Origin 1940s. From on- + lap, after offlap, overlap. Definition of onlap in US English: onlapnounˈɒnlap Geology A progressive increase in the lateral extent of conformable strata in passing upwards from older to younger strata, so that each stratum is hidden by the one above; a set of strata exhibiting this.
verbˈɒnlap Geology with object To cover (a stratum) so as to form an onlap.
Origin 1940s. From on- + lap, after offlap, overlap<br>1950s. From onlap. |