| 单词 |
eugeogenous |
| 释义 |
eugeogenous, a. Geol.|juːdʒiːˈɒdʒɪnəs|
[ad. F. eugéogène (J. Thurmann Essai de Phytostatique (1849) iv. 95), f. eu- + geo- + -genous.]
Of rock: that readily decomposes into detritus and is therefore able to form good soil. Opp. to dysgeogenous.
1850Phytologist III. 918 The subjacent rocks, with reference to their mode of disintegration, their power of absorption, and their permeability, are divisible essentially into eugeogenous and dysgeogenous. The eugeogenous rocks produce an abundant detritus. When it is of a clayey (pélique) nature, it makes humid stations that are often inundated... The dysgeogenous rocks produce a scanty detritus, sometimes sandy, usually clayey, and always making stations more dry than those of the eugeogenous rocks. 1863J. G. Baker North Yorkshire 152 They are due south of the hills of the eugeogenous range and based upon their slope. 1903Geogr. Jrnl. Aug. 151 Eugeogenous..rocks..yield a plentiful detritus, and the overlying soils are cool and moist. |
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