The Australian share market has closed 1.6 per cent lower, as a sharp drop in oil prices pulled back energy stocks, and resources stocks weakened.
At 1418 AEDT on Tuesday, according to preliminary closing figures, the benchmark S&P/ASX200 index was down 90 points, or 1.68 per cent, at 5,282.7 points.
The broader All Ordinaries index was down 90.6 points, or 1.69 per cent, at 5,258.3 points.
The December share price index futures contract was 106 points lower at 5,284 points, with 31,374 contracts traded.
National turnover was 1.42 billion securities worth $5.03 billion.
Oil prices have slumped to fresh five-year lows on worries about a supply glut, helping push down markets in the US and Europe.
OptionsXpress market analyst Ben Le Brun said the fall in the oil price was the main factor dragging back the Australian market on Tuesday.
"It (the lower oil price) should ultimately be a stimulus for the world economy, but it's really undermining confidence," he said.
Mr Le Brun said Chinese economic data later in the week may be a catalyst for a change in sentiment.
He said the market in Shanghai was trading higher, which suggested that Chinese investors were seeing something that no-one in the resources sector in Australia was seeing, such as the potential for the Chinese government to increase further economic stimulus measures.
Energy giant Santos slumped to its lowest level in 10 years following the slide in oil prices, plus a credit rating downgrade from Standard and Poor's.
Santos shares were down 60 cents, or 7.23 per cent, at $7.70.
Woodside Petroleum lost $1.01 at $34.38, and Oil Search slid 56 cents to $7.29.
Global miner BHP Billiton descended $1.22 to $28.88, Rio Tinto dropped $1.63 to $55.50, and Fortescue Metals Group retreated 11 cents to $2.55.
Among the big banks, ANZ weakened 52 cents to $31.88, National Australia Bank sagged 37 cents to $32.60, Westpac surrendered 29 cents at $33.06, and Commonwealth Bank was off 37 cents weaker at $82.02.
Health insurer Medibank Private was 3 cents higher at $2.22.
