Definition of upfold in English:

upfold

Line breaks: up¦fold
Pronunciation: /ˈʌpfəʊld
 
/

noun

Geology
An anticline.
More example sentences
  • They may have a combination of upfolds and downfolds resulting in very complex structures.
  • The folded rocks are seen in exposed and submerged nearshore reefs, and cliffed headlands where upfolds bring the harder Black Rock Sandstone above sea level.
  • The upfolds that occur become mountains (these upfolds are called anticlines) and the down folds are called synclines.

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Word of the day bimble
Pronunciation: ˈbɪmb(ə)l
verb
walk or travel at a leisurely pace