Sentence:  When strata are so unsymmetrically and <WSD>abundantly</WSD> folded that it becomes difficult or impossible to trace out the individual flexures and crumplings — the whole forming an irregular complex of folds — they are said to be contorted ... 
Meaning of the word marked with <WSD> tags:  In an abundant manner; in a sufficient degree; in large measure. (First attested around 1350 to 1470.)<ref name=SOED>(page=10)</ref>