Relating to or denoting an area adjacent to a glacier or ice sheet or otherwise subject to repeated freezing and thawing.
- ‘Molluscs are dominated by a few species characteristic of open, wet ground typical of ancient British periglacial conditions, that is of freezing cold landscapes close to permanent ice sheets.’
- ‘Sandstone-filled cracks exposed at the unconformity are viewed as periglacial frost fissures.’
- ‘Hence the cracks probably developed following glacial retreat when the area containing the eroded surface of Bedford Sandstone was in a periglacial setting.’
- ‘Preserved sediments record deposition in a periglacial to ice-margin lake that contains one of the earliest assemblages of freshwater arthropods from Gondwana.’
- ‘These may be of fluviatile, glacial, periglacial, lacustrine, aeolian, or marine origin.’
We take a look at several popular, though confusing, punctuation marks.