| 单词 |
outcrop |
| 释义 |
▪ I. outcrop, n.|ˈaʊtkrɒp|
[out- 7: cf. crop out, crop v. 10.]
Mining and Geol. The cropping out or emergence of a stratum or vein at the surface; the edge of a stratum or vein that thus crops out.
1805Edin. Rev. VI. 244 Most of our coal has been discovered..by exploring their outcrops. 1815W. Smith Mem. Map Strata Eng. & Wales 7 The edges of the strata, which may all be crossed in the journey from east to west, are called their outcrops. 1878Huxley Physiogr. 29 Rain falling upon the ground..is absorbed by the outcrop, or exposed surface, of the sandy stratum. 1882J. Hardy in Proc. Berw. Nat. Club. IX. No. 3. 452 Outcrops of limestone succeed.
b. transf.
1851–6Woodward Mollusca 213 Flattened prisms of considerable length, arranged.. obliquely to the surfaces of the shell, the interior of which is imbricated by their out-crop.
c. fig. A coming into outward manifestation.
1864Brevior Two Worlds p. vii, I regard these as only its incidents and outward evidences, not its essentials; the mere outcrop on the surface indicating the presence and operation of underlying spiritual forces. 1897W. C. Hazlitt Four Gen. Lit. Fam. I. ii. ii. 92 Here we have an outcrop of that splenetic acrimony.
d. attrib. in Mining.
1895Hatch & Chalmers Gold Mines Rand 121 Shafts that are partly vertical and partly inclined..among outcrop properties. 1895St. James's Gaz. 16 Nov. 7/1 With regard to the productive capacity of the outcrop companies.
▪ II. ˈoutcrop, v.
[f. prec. n.]
intr. a. Mining and Geol. To crop out (see crop v. 10) or emerge at the surface, as a stratum or vein.
1848Jrnl. R. Agric. Soc. IX. i. 61 Wherever it outcrops, the soil is distinguished for its fertility. 1895Westm. Gaz. 27 May 8/1 A number of other reefs..traverse the property, either outcropping on or dipping into it.
b. fig. To emerge or come out casually.
1856C. J. Ellicott in Cambr. Ess. 172 Because a few suspicious words here and there outcrop in the narrative. 1860Maury Phys. Geog. Sea (Low) xii. §553 Do we not..find outcropping some reason for the question, what have the winds had to do with the phenomena before us? |
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