Is having nothing to do with lead scientist in lodge describing land movement - that's all about balance! (8)

'balance' is the definition.
(I have seen 'earthly balance' mean 'isostasy' so perhaps 'balance' could also mean 'isostasy')

'is having nothing to do with lead scientist in' is the wordplay.
'having' means one lot of letters go next to another.
'nothing' becomes 'O' (O resembles 0).
'to do with' becomes 'stay' (I can't explain this - if you can you should believe this answer much more).
'lead' indicates taking the first letters (I've seen 'leading' mean this).
'in' indicates putting letters inside.
The initial letter of 'scientist' is 's'.
'stay' placed around 's' is 'stasy'.
'is'+'o'+'stasy'='ISOSTASY'

'lodge describing land movement that's all about' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?