It is widely used for architectural construction, ornamental stone and monuments. PUMICE: An igneous-volcanic rock, it is a porous, brittle variety of rhyolite and is light enough to float. It is formed when magma of granite composition erupts at the earths surface or intrudes the crust at shallow depths.
Sponsored Topics. Parma is a city in Canyon County, Idaho, United States. The population was 1,771 at the 2000 census. It is part of the Boise CityâNampa, Idaho Metropolitan Statistical Area. Parma is located at 43Â°47â²10â³N 116Â°56â²34â³W / 43.78611Â°N 116.94278Â°W / 43.78611; -116.94278 (43.786009, -116.942656).
Idaho State Department of Agriculture Minidoka County Basalt Aquifer Regional Project Pesticide Detections and Idahoâs Pesticide Management Plan ISDA Fact Sheet #8â2010 January 2010 basalt flows of the Snake River Group and generally are less than 100 feet below the ground surface in the project area (Fox and Carlson, 2001).