LAS VEGAS (AP) - Two moderate earthquakes jolted the remote Nevada desert Sunday, shaking Las Vegas casinos miles away and prompting telephone calls from worried tourists and residents. No damage or injuries were reported. A magnitude-5.6 quake near the California-Nevada border struck at 9:06 a.m., followed 21 minutes later by a magnitude-5.2 shaker, said Pat Jorgenson of the U.S. Geological Survey. The epicenters were 130 miles northwest of Las Vegas along a remote, sparsely inhabited border area east of California's Death Valley National Park, she said. Several Las Vegas high-rise hotels reported calls from guests wondering what was happening.