Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary rocks. Though they vary widely in composition, most igneous rocks consist of quartz, feldspars, pyroxenes, amphiboles, micas, olivines, nepheline, leucite, and apatite. They may be classified as intrusive or extrusive rocks.
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Constraining the Post-Emplacement Evolution of the Hebridean Igneous Province (HIP) Using Low-Temperature Thermochronology: How Long Has the HIP Been Cool?
Sep 01, 2010; Abstract: The thermal history of the Hebridean igneous Province has been determined through the application of...
Large igneous provinces (LIPs), giant dyke swarms, and mantle plumes: significance for breakup events within Canada and adjacent regions from 2.5 Ga to the Present.(Report)
May 01, 2010; Introduction Herein, we explore the link between large igneous provinces (LIPs) and continental breakup. The Canadian...