| 单词 | to wedge out |
| 释义 | > as lemmasto wedge out 6. to wedge out Geology: = to thin out at thin v.1 2a; = to lens out at lens v. ΘΚΠ the world > the earth > structure of the earth > structural features > sedimentary formation > [verb (intransitive)] > narrow to wedge out1819 pinch1867 to lens out1921 1819 [implied in: J. Forbes Geol. Land's-End District (1822) 21 At one point of this natural section, an instructive example of what is called by geologists the wedging out of a bed, is observable. (at wedging n. 4)]. 1839 R. I. Murchison Silurian Syst. 140 Limestone.. can be traced tapering away from a central mass to thin extremities, which really wedge out between the coal grits and the older deposits. 1945 Bull. Amer. Assoc. Petroleum Geologists 29 1563 The distinction from the Permeability Trap Reservoirs is made by restricting the Pinch-Out Trap Reservoirs to types located in such stratigraphic intervals or zones which actually wedge out. 1966 Earth-Sci. Rev. 1 163 Ignimbrites tend to wedge out against or thin over topographic highs. 1979 Nature 27 Sept. 267/1 These nappes wedge out and converge to the west and seem to represent a telescoping of Lower Palæozoic Facies. < as lemmas |
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