| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Host rock | Environment | 1: (1) The rock unit in which the potential repository would be located. For a repository at Yucca Mountain, the host rock would be the middle portion of the of the Topopah Spring Tuff of the Paintbrush Group. (2) The geologic medium in which the waste is emplaced. (references) | |
| 2: A body of rock with younger rocks or mineral deposits introduced into it or formed within or next to it. (references) | |||
| Host rock | Mining | A body of rock serving as a host for other rocks or for mineral deposits; e.g., a pluton containing xenoliths, or any rock in which ore deposits occur. It is a somewhat more specific term than country rock. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
