Crossword Genius

Unaffected by scenic detour, point to geology, say (7,7)

Ross

I believe the answer is:

natural science

'to geology say' is the definition.
(geology is a kind of natural science)

'unaffected by scenic detour point' is the wordplay.
'unaffected' becomes 'natural' (similar in meaning).
'by' says to put letters next to each other.
'detour' indicates an anagram.
'point' becomes 'E' (compass point).
'scenic' anagrammed gives 'scienc'.
'natural'+'scienc'+'e'='NATURAL SCIENCE'

I've seen this clue in The Daily Express.
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