词汇 | dextral |
释义 | BETA Examples of dextraldextral isn’t in the Cambridge Dictionary yet. You can help! This observation and the en echelon arrangement of the serpentinite bodies within the shear zone suggest a variable dextral strike-slip component of the down-dip extension. These indicate minor displacements (millimetre to centimetre scale) with both sinistral and dextral kinematic indicators observed. The recrystallized hornblende forms shear bands, indicating dextral shear during amphibolite facies conditions. Many quartz layers and quartz mobilizates consist of recrystallized grains which define a new foliation arranged oblique to the external foliation, indicative of a dextral sense of shear. The oblique plate motion was resolved into trench normal subduction and dextral movements, which generated strike-slip faults and developed the forearc basin in this part of the subduction complex. Thus, cumulative dextral offset should be corrected to 13 km allowing for 30 cumulative clockwise rotation within the zone. Due to isoclinal folding, the shear-sense indicators show a zonal distribution of dextral and sinistral sense of shear. Dextral strike-slip along these faults is producing compression and uplift in the area in between. The calc-mylonites are strongly lineated with fabrics showing a minor component of dextral strike-slip motion. However, in some domains, recrystallized grains form a second foliation oblique to the main foliation indicating a dextral sense of shear. Poles on ten sinistral faults and twelve dextral faults are plotted stereographically, along with the mean in each case. Of the 20 shear zones where shear sense has been determined, 10 are dextral and 10 are sinistral. Kinematic indicators in the mylonite zones consistently give a dextral sense of shear. The direction of the spiral coil is dextral as viewed from the centre of the clusters, regardless of the type of plaited morphology. The alternatively dextral or sinistral tilt of the spindle is thus based upon the asymmetrical growth of microtubules of the vegetal aster. The specimen is tectonically deformed by a dextral shear (the right side is posteriorly displaced relative to the left side). The curvature of the radial elements along the bed sole is consistently dextral as viewed in hypichnial preservation. A dextral sense of shear can be deduced from numerous micro- and mesoscale kinematic indicators. |
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