The earthquake was 75.1 km (46.66 miles) deep. An earthquake measuring 6.1 magnitude struck 107 km south of Sibolga, Sumatra, Indonesia today, the US Geological Survey said.The quake was 75.1 km (46.66 miles) deep.© Thomson Reuters 2015Also ReadChinese Woman, 31, Posing For Photo Dies After Falling Into Indonesian VolcanoIndia's Gita Sabharwal Appointed To Top UN Post In IndonesiaRemote Indonesia Volcano Erupts Again After Thousands Evacuated