volcanic theory

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volcanic theory [väl′kan·ik ′thē·ə·rē]

(astronomy)

A theory which holds that most features of the moon's surface were formed by volcanic eruptions, lava flows, and subsidences when lunar rocks were plastic. Also known as igneous theory; plutonic theory.

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No references found			The debunking of the volcanic theory was heartening news for the local people. Burning peat underlies Mali's hot ground. (Digging for Fire) by McDonagh, Sorcha / Science News As evidence for the volcanic theory, these scientists have maintained that volcanoes can bring iridium-rich rock from the Earth's mantle to the surface. Signs of an ancient worldwide wallop by Monastersky, Richard / Science News Proponents of the volcanic theory have suggested that the Deccan eruptions caused the K-T extinctions by spewing out sulfur and other volcanic material that darkened the skies, cooled the planet and produced acid rain. Volcanoes and extinctions: round two by Weisburd, Stefi / Science News			volatile organic compounds volatile storage volatile thinner volatile variable volatile-oil reservoir Volatility volatility product volatilization volborthite volcanello volcanic arc Volcanic Ash Volcanic Bomb volcanic bombs volcanic breccia volcanic foam Volcanic Gases volcanic glass Volcanic Legacy Scenic Byway - California Volcanic Legacy Scenic Byway - Oregon volcanic mud volcanic mudflow Volcanic Neck volcanic rift zone Volcanic Rock volcanic theory Volcanic Tuff volcanic vent volcanicity volcaniclastic rock volcanics volcanism volcano Volcano Islands Volcanoes Volcanogenic Sedimentary Deposits Volcanogenic Sedimentary Rock Volcanology Volcanology, Institute of Volchansk Volchek, Boris Volchek, Boris Izrailevich Volcher Coiter Volchia Volchikha Volchkov, Nikolai Volchkov, Nikolai Nikolaevich Volchok Volcker, Paul A Volcker, Paul A. Volcker, Paul Adolph			Volcanic Legacy Scenic Byway - California Volcanic Legacy Scenic Byway - Oregon Volcanic mountain Volcanic mountain Volcanic mountain Volcanic mountain Volcanic mountains Volcanic mountains Volcanic mountains Volcanic mountains Volcanic mud Volcanic mud volcanic mudflow Volcanic Neck Volcanic Neck volcanic necks volcanic necks volcanic necks Volcanic pipe Volcanic plug Volcanic plug Volcanic Rift Zone Volcanic Rift Zone volcanic rock volcanic rock Volcanic rocks Volcanic rocks Volcanic shield Volcanic shield Volcanic Smog volcanic theory Volcanic Tuff Volcanic Tuff Volcanic vent Volcanic vent Volcanic vent Volcanic vent Volcanic wind Volcanic-Hosted Massive Sulfide volcanically volcanically Volcanicity Volcanicity Volcaniclastic volcaniclastic rock volcanics volcanism volcanism volcanism volcanism Volcanist Volcanite Volcanite Volcanity volcanization volcanize volcanized volcanizes volcanizing volcano volcano

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