Sonic Youth's Kim Gordon and Thurston Moore have announced the end of their 27-year marriage. The split leaves an uncertain future for the pioneering alternative rock band, who formed three decades ago and have fall tour dates planned.

A statement from their rep at Matador Records reads, "Musicians Kim Gordon and Thurston Moore, married in 1984, are announcing they have separated. Sonic Youth, with both Kim and Thurston involved, will proceed with its South American tour dates in November. Plans beyond that tour are uncertain. The couple has requested respect for their personal privacy and does not wish to issue further comment."

Gordon, 58, and Moore, 53, have a 17-year-old daughter Coco.

The band's most recent album, 2009's The Eternal, earned a four-star review from Rolling Stone, which said the album "sums up almost everything this band has done over three decades, punk sneers and psychedelic guitars pimping a proudly pretentious belief in rock as art."

In a 2007 interview with Rolling Stone, when asked who was the coolest famous person he'd ever met, Moore answered "It would have to be Kim G! For sure. Believe me, she was unbelievable when I first met her. She wore this sort of hip prison-stripe outfit and flip-up shades on her glasses. She had a ponytail, a little ponytail that was sort of center at the back of her head and I thought, 'That's the coolest fucking person I've ever met.'"

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