Large volume back in Gateshead showing intense passion (7)

I believe the answer is:

emoting

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'showing intense passion' is the definition.
Although both the answer and definition are present participle verbs, I can't understand how they can define each other.

'large volume back in gateshead' is the wordplay.
'large volume' becomes 'tome' (I've seen this before).
'back' shows that the letters should be reversed in order.
'gateshead' becomes 'g' (head letter of 'gates').
'tome' in reverse letter order is 'emot'.
'emot'+'in'+'g'='EMOTING'

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I've seen this clue in the Sydney Morning Herald.

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