gravel deposit
21Calaveras skull — Ca la*ve ras skull A human skull reported, by Prof. J. D. Whitney, as found in 1886 in a Tertiary auriferous gravel deposit, lying below a bed of black lava, in Calaveras County, California. It is regarded as very doubtful whether the skull… …
22Magallanes, Cavite — Municipality of Magallanes, Cavite Bayan ng Magallanes, Kabite   Municipality   …
23rimrock — /rim rok /, n. Geol. 1. rock forming the natural boundary of a plateau or other rise. 2. bedrock forming the natural boundary of a placer or of a gravel deposit. [1855 60, Amer.; RIM + ROCK1] * * * …
24rimrock — noun An outcrop of hard rock, often in the form of a cliff at the edge of a plateau, that forms the margin of a gravel deposit …
25kame — A stratified glacial sand and gravel deposit forming a small, conical hill [16] …
26wash — Erosion by water. A gravel deposit made by an overflowing stream. Another term for wort …
27drift mine — noun Etymology: drift (I) + mine : a placer or gravel deposit worked by underground mining methods * * * 1. a mine the opening of which is dug into an outcrop of coal or ore. 2. an underground placer mine. [1885 90, Amer.] …
28river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
29glacial landform — ▪ geology Introduction any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …
30mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
