| 单词 | rodding structure |
| 释义 | > as lemmasrodding structure 5. Geology. A linear structure in metamorphic rocks characterized by the arrangement of grains of a constituent mineral, esp. quartz, in parallel rods. Also rodding structure. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [noun] > texture > linear structure rodding1897 lineation1938 1897 W. Gunn et al. Geol. Cowal ii. 17 In general, the veins run roughly with the foliation, and show on their sides prominent ‘stretching’ or ‘rodding’ structure, the quartz and felspar running in rod forms in a definite direction. 1897 W. Gunn et al. Geol. Cowal iv. 49 The rock may have been folded before the force which produced the rodding commenced to act. 1923 Q. Jrnl. Geol. Soc. 79 439 In the hornblende-schists there is actual rodding or elongation of the crystals. 1970 K. C. Jackson Textbk. Lithol. vii. 426 Associated with the larger-scale folding may be the segregation of more mobile constituents such as quartz, resulting in a small~scale rodding structure. 2006 P. H. G. M. Dirks & H. A. Jelsma in W. U. Reimold & R. L. Gibson Processes on Early Earth 305/1 L1 is a mineral or stretching lineation defined by..quartz and feldspar rodding, elongated leucosome pockets, and pegmatite veins. < as lemmas |
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