Some Roman texts turned up in active volcano (4)
I believe the answer is:
etna
'active volcano' is the definition.
(I've seen this before)
'some roman texts turned up' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'turned up' is a reversal indicator.
'ante' is hidden within 'roman texts'.
'ante' in reverse letter order is 'ETNA'.
'in' is the link.
(Other definitions for etna that I've seen before include "Active European volcano" , "A feature of Sicily" , "source of fumes?" , "Sicilian volcano" , "A neat sort of volcano" .)