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.
The 1959 Hebgen Lake earthquake also known as the 1959 Yellowstone earthquake occurred on August 17 at 11:37 pm (MST) in southwestern Montana, United States. The earthquake measured 7.3 â 7.5 on the Richter magnitude scale, and caused a huge landslide that caused over 28 fatalities and left $11 million (1959 US$, $88.7 million 2014 US$) in damage. The slide blocked the flow of the Madison River resulting in the creation of Quake Lake.