Robyn Moore after 28 years of Marriage, filing divorce to Mel Gibson

Robyn Moore after 28 years of Marriage, filing divorce to Mel Gibson. Robyn signed the divorce papers on Thursday and filed the papers on Monday morning in Los Angeles Superior Court, citing "irreconcilable differences" as the reason for the split. Mel and Robyn were married in 1980 after meeting in Australia in 1977.

Robyn Moore and Mel Gibson

"Throughout our marriage and separation we have always strived to maintain the privacy and integrity of our family and will continue to do so," the Gibsons said.

The couple has seven children - the oldest, Hannah, was born in 1980 and the youngest, Thomas, born in 1999, is the only minor.

In the divorce papers obtained by Access Hollywood, Robyn is seeking joint physical and legal

Robyn is also requesting ownership of "miscellaneous jewelry."

Access has also learned that Mel and Robyn did not have a prenuptial agreement.

In article in the December 1, 2008 issue of the National Enquirer, Gibson has a reported net worth of approximately $900 million.

Mel, who spent Easter weekend at his home in Malibu, recently wrapped production on his latest film, "Edge of Darkness," a murder conspiracy thriller due in theaters in 2010.

And on Monday afternoon, Mel, who is being represented by attorney Robert S. Kaufman, filed his response to the divorce filing.

In his response filing, Mel is also asking a court to grant their divorce and lists their date of separation as August 26, 2006, a date just one month after he was arrested for DUI in Malibu and was accused of using anti-Semitic language at the arresting officer.

Mel also cited irreconcilable differences for the split. He also is asking for joint legal and physical custody of their minor son, Thomas Rufus.

The actor has also asked that the court terminate its ability to award spousal support to either Robyn or himself.