from The Century Dictionary.
- Not converted into stone: as applied to volcanic ashes, the term means that these are still in loose form and have not become compacted by pressure, fusion, or cementing action.
Sorry, no etymologies found.
Vulnerability of arctic coasts to sea-level rise and erosion, showing land areas of the Arctic with elevations less than 10 m above mean sea level (red), regions with unlithified coasts (green), and regions with lithified coasts (brown) .
The most unstable coasts are those that are composed of unlithified sediments (Fig. 6.38).