The phrase "as a chasm" is correct and usable in written English.
It can be used metaphorically to describe a significant gap or difference between two things, such as ideas, feelings, or situations.
Example: "The misunderstanding between them grew wider, leaving their relationship feeling as a chasm that could never be bridged."
Alternatives: "like a gulf" or "as a divide".
The beginning and the end were of contrasts as broad as a chasm, and reflect the American legend.
My weekends, which, after the divorce, had often seemed to stretch out before me, empty and treacherous as a chasm, now had a structure.
Our purpose is to promote collaboration among researchers sharing the vision of a computer-assisted, rapid learning healthcare system that eliminates what the National Academies describe as "a chasm" between potential and actual efficiency and quality of care.
But it's frequently in the downtime between the big set pieces that the dystopian nature of Westminster's parallel universe is mercilessly unveiled, when the gap between fantasy and reality is revealed as a chasm.
In particular, the review highlights what it terms as a "chasm in benefit coverage" in Japan.
The gap between the "ward and the board" is still described by many front-line staff as a "chasm".
But in 2015, Democratic senators earned an average score of 92 while Republicans averaged just 5 — about as big a chasm between the two parties as possible.
It was as if a chasm had suddenly opened between this single black performer and all those increasingly uneasy white people.
But the gap might as well be a chasm for most families.
KULESZE KOSCIELNE, Poland — The red-tiled roofs of this tiny village cluster around the soaring steeples of St. Bartholomew Church like medieval cottages at the base of a castle, alienated from the cosmopolitan life of cities such as Warsaw by a chasm that is economic, cultural and political.
Physicists do not necessarily discuss the details of their latest theories while dangling from a rope over a chasm as threatening as a black hole.
