Cardiff: Marcus North's second ton in 3 Tests left Australia in charge of their Ashes series opener against England here on Saturday.
Oz, at lunch on the fourth day at Sophia Gardens, were 577 for five in reply to England's first innings 435, a lead of 142.
North was 101 not out and wicket-keeper Brad Haddin, also playing his first Test against England, 50 not out.
Scorecard: 1st Test - Aus Vs Eng
With his ton he'd become the 15th Australia player to make a century on his Test debut against England
Aussie players achieved ton in test Debut:
Player Year Place
Marcus North 2009 Cardiff
Damien Martyn 2001 Edgbaston
Adam Gilchrist 2001 Edgbaston
North's stand of 103 with Haddin had all but ended any hopes England had of winning this match as the home side endured a wicketless sesion.
North's two off James Anderson took the left-hander to a century in 206 balls with 12 fours.
Australia resumed on 479 for five, a lead of 44 after centuries from captain Ricky Ponting (150) and opener Simon Katich (122).
Michael Clarke had fallen short with 83 before being dismissed just before stumps on Friday.
North, who has played for five English counties, was 54 not and Haddin four not out after bad light cut short Friday's play.
Haddin set the tone on Saturday by cover-driving Broad for four. Anderson too struggled to impose himself and North's pulled four off the Lancashire
seamer took Australia past 500.
Harmison, England's fastest bowler, had been dropped in the Caribbean earlier this year but did take 6 wickets for the England Lions last week.