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A volcanic plug, also called a volcanic neck or lava neck, is a volcanic object created when magma hardens within a vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if rising volatile -charged magma is trapped beneath it, and this can sometimes lead to an explosive eruption.
Volcanic plugs by country (8 C) Pages in category "Volcanic plugs" The following 3 pages are in this category, out of 3 total. This list may not reflect recent ...
Volcanic plugs of the United Kingdom (3 C) Volcanic plugs of the United States (2 C, 26 P, 1 F) This page was last edited on 27 April 2020, at 02:34 (UTC). Text ...
Volcanic plugs of North America (2 C, 2 P) O. Volcanic plugs of Oceania (2 C, 2 P) S. Volcanic plugs of South America (2 P) This page was last edited on 21 January ...
Pages in category "Volcanic plugs of the United States" The following 26 pages are in this category, out of 26 total. This list may not reflect recent changes. B.
Volcanic plugs of the United Kingdom. Subcategories. This category has the following 3 subcategories, out of 3 total. ...
Volcanic plugs of the United States (2 C, 26 P, 1 F) Pages in category "Volcanic plugs of North America" The following 2 pages are in this category, out of 2 total.
The 581-foot (177 m) [1] Morro Rock is one of 13 volcanic plugs (remnant necks of extinct volcanoes), lava domes, and sheetlike intrusions between Morro Bay on the north and Islay Hill on the south, all in San Luis Obispo County. [8] It is composed mostly of dacite, an igneous, volcanic rock.