igneous concentration
101Easter Island — For the album by Kris Kristofferson, see Easter Island (album). Rapa Nui redirects here. For other uses, see Rapa Nui (disambiguation). Coordinates: 27°7′S 109°22′W / …
102Isle of Arran — This article is about the Scottish island. For other uses, see Arran. Isle of Arran Location OS grid reference …
103Chicxulub crater — Imaging from NASA s Shuttle Radar Topography Mission STS 99 reveals part of the 180 kilometer (112 mi) diameter ring of the crater; clustered around the crater s trough are numerous sinkholes, suggesting a prehistoric oceanic basin in… …
104Western United States — The Western United States mdash;commonly referred to as the American West or simply the West mdash;traditionally refers to the region comprising the westernmost states of the United States (see geographical terminology section for further… …
105San Joaquin River — Coordinates: 38°04′00″N 121°51′04″W / 38.0666667°N 121.85111°W / 38.0666667; 121.85111 …
106Pyroclastic rock — Pyroclastic rocks or pyroclastics (derived from the Greek πῦρ , meaning fire, and κλαστός , meaning broken) are clastic rocks composed solely or primarily of volcanic materials. Where the volcanic material has been transported and reworked… …
107Ignimbrite — is a volcanic pyroclastic rock, often of dacitic or rhyolitic composition. Ignimbrite is the deposit of a pumice rich pyroclastic density current, or pyroclastic flow , a hot suspension of particles and gases that flows rapidly from a volcano,… …
108Craton — Geologic provinces of the world (USGS)   Shield …
109Oregon Caves National Monument — Coordinates: 42°05′44″N 123°24′21″W / 42.09556°N 123.40583°W / 42.09556; 123.40583 …
110Potassium dichromate — Potassium dichromate …
