Los Angeles ? The strike by 70,000 Southern California grocery clerks entered its second week Saturday, with no new negotiations in sight and both sides blaming the other for the impasse.

Talks broke off Oct. 11 and no negotiating sessions were scheduled, said Terry O’Neil, a spokesman for the Ralphs supermarket chain.

Grocery clerks from three chains — Kroger Co.’s Ralphs, Safeway Inc.’s Vons and Albertsons Inc. — went on strike or were locked out of stores from San Luis Obispo to San Diego in a contract dispute involving the cost of health care coverage and other issues.

The walkout by grocery clerks coupled with a strike by transit mechanics in Los Angeles has created a spate of problems across the region.