Denoting a fold of strata so acute that the two limbs are parallel.
- ‘Asymmetrical folds and axial planar quartz veins, isoclinal and rootless folds and boudinage of chert layers are common.’
- ‘These isoclinal folds deform ‘early’ domains which record a pre-Main Central Thrust compositional banding.’
- ‘However, quarry outcrops of mainly white halitic mylonites display isoclinal folds that suggest a more impressive past.’
- ‘Even the youngest Triassic rocks are strongly folded, in places by isoclinal, recumbent folds.’
- ‘Large tight or isoclinal folds with limbs several tens of metres long occur locally.’
Mid 19th century (denoting equal magnetic inclination): from iso- equal + Greek klinein to lean, slope + -al.