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.
1. 1556 Shaanxi earthquake The 1556 Shaanxi earthquake is the deadliest earthquake on record, having killed about 830,000 people. The earthquake struck on the morning of January 23, 1556, in Shaanxi, China during the rule of the Ming Dynasty.