(Reuters) - Australia's benchmark share index tumbled to its lowest level in over a month on Friday as global equities reeled after President Donald Trump signed a memorandum that could impose heavy tariffs on imports from China - sparking fears of a global trade war.
The S&P/ASX 200 index <.AXJO> fell 2 percent, or 116.5 points, to 5,820.7.
It lost nearly 2.2 percent on the week, its biggest weekly loss since early February.
Responding to U.S. import tariffs on steel and aluminium that went into effect on Friday, China unveiled plans to levy additional duties on up to $3 billion of U.S. imports.
A global trade war would particularly threaten economies such as Australia's which rely on exports of basic commodities used in the world supply chain.
In Australia, materials and financial stocks led the losses on the main index.
The materials sector <.AXMM> slid 3.0 percent on a drop in commodity prices, with BHP Billiton <BHP.AX> and Rio Tinto <RIO.AX> losing 3.1 percent and 4.4 percent, respectively.
Base metal prices fell on trade tensions but oil recovered after Saudi announced plans for OPEC and Russian led production curbs to be extended into 2019 [O/R] [MET/L]
Financial stocks <.AXFJ> fell 2.2 percent to close at its lowest in over a year, with the 'Big Four' banks slipping between 1.7 percent and 2.8 percent.
Meanwhile, New Zealand's benchmark S&P/NZX 50 index <.NZ50> closed 1 percent lower, or 85.45 points, to 8,515.36 but posted its third straight week of gains.
Consumer staples and material stocks dragged the index down, with a2 Milk Company Ltd <ATM.NZ> and Fletcher Building Ltd <FBU.NZ> shedding 2.6 percent and 3.6 percent, respectively.
(Reporting by Devika Syamnath in Bengaluru; Editing by Kim Coghill)
