And then there are the M-Disk: http://www.extremetech.com/computing/92286-m-disc-is-a-dvd-made-out-of-stone-that-lasts-1000-years. USD DOD test: http://www.mdisc.com/uploads/M-DISC_1sheet_ChinaLake_vF.pdf. Down side, requires writer that is M-Disk capabale, and disk are expensive (ie about 3 bucks per disk.
The Shaanxi earthquake's epicenter was in the Wei River Valley in Shaanxi Province, near the cities of Huaxian, Weinan and Huayin.
Location: Valdivia, Chile | Date: May 22, 1960 | Magnetite: 9.5. Valdiva earthquake was the largest earthquake ever recorded by the instrument in the history. It was originating at coast of southern Chile on may 22 1960. The earthquake occurs at 7:11 PM, 100 miles off the cost of Chile, parallel to the city Valdivia.