Search results
Results from the WOW.Com Content Network
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.
Cabezon Peak is the solidified core of a volcano that erupted 2.658 ± 0.032 million years ago, based on argon-argon dating. The eruption at this volcano likely began with lava fountains from the vent, which built up a scoria cone. Lava later ponded in the interior of the cone, solidifying into a massive plug.
Huerfano Butte (/ ˈ w ɛər f ə n oʊ /; Spanish pronunciation:) is a volcanic plug [5] or hypabyssal plug [6] located 8.8 miles (14.1 km) north of Walsenburg in Huerfano County, Colorado, United States.
This volcanic plug, roughly 300 metres (980 feet) in diameter, has a potassium–argon date of 1.6 ± 0.2 million years which may be due to excess argon. [ 103 ] [ 107 ] The eruptions during Ice Peak time deposited 76.7 cubic kilometres (18.4 cubic miles) of volcanic material, making the Ice Peak Formation the most voluminous geological ...
Agathla Peak is an eroded volcanic plug consisting of volcanic breccia cut by dikes of an unusual igneous rock called minette. It is one of many such volcanic diatremes that are found in Navajo country of northeast Arizona and northwest New Mexico.
After magma is generated, magma will migrate out of its source region by the process of magma segregation and extraction. These processes define the resulting composition of the magma. Depending on the efficiency of the segregation and extraction, there will be different structures of the volcanic and igneous plumbing systems. [6]
The Salinan and Chumash tribes consider Morro Rock to be a sacred site. The Salinan name for Morro Rock is Le'samo and the Chumash name is Lisamu. [10]The Chumash had an important nearby prehistoric settlement at least as early as the Millingstone Horizon (6500-2000 B.C.E.), and the village was near the mouth of Morro Creek, at the current site of Morro Bay High School.
Media in category "Volcanic plugs" This category contains only the following file. Mount popa.JPG 390 × 558; 58 KB