The most common and most likely answer to this crossword clue is the 8 letter word CREVASSE
I've seen this crossword clue in The Guardian
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More clues leading to the result CREVASSE
- Donkey joins minister in church, provoking big split
- It's always cold, climbing — help not half needed when falling into it!
- Vicar a fool to probe church’s deep split
- Big gap in short shorts Versace designed
- Cleric appearing on donkey in church causes deep division
- Vicar overlooks fool in church making crack
- Expedition’s leader is covered in woolly scarves in place avoided by climbers?
- Clergyman having fool in church is in a deep hole
- Rent at a high level?
- Father Jack, perhaps, embraced by Anglicans, causing split
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CREVASSE mean?
CREVASSE noun- A crack or fissure in a glacier or snowfield; a chasm.
- A breach in a canal or river bank.
- A discontinuity or “gap” between the accounted variables and an observed outcome.
- To form crevasses.
- To fissure with crevasses.