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.
This volcanic neck is formed of basalt and is part of the Mount Taylor volcanic field. A volcanic neck or plug is formed when magma from an existing volcano solidifies in the pipe or neck and the surrounding sediment is eroded away. [5] Marine Cretaceous rocks of the Mancos Shale and Point Lookout Sandstone are exposed around the base of ...
Volcanic necks are feeder pipes for volcanoes that have been exposed by erosion. Surface exposures are typically cylindrical, but the intrusion often becomes elliptical or even cloverleaf-shaped at depth. Dikes often radiate from a volcanic neck, suggesting that necks tend to form at intersections of dikes where passage of magma is least ...
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.
Intrusive rock is formed when magma penetrates existing rock, crystallizes, and solidifies underground to form intrusions, such as batholiths, dikes, sills, laccoliths, and volcanic necks. [1] [2] [3] Intrusion is one of the two ways igneous rock can form. The other is extrusion, such as a volcanic eruption or similar event.
“Here is your neck-less shirt,” he concluded with a laugh while tossing the garment off-screen, presumably onto a pile of Cindy’s folded clothes. Related: ...
Shiprock, an example of a volcanic neck, is composed of fractured volcanic breccia and black dikes of igneous rock called minette, a type of lamprophyre.It is the erosional remnant of the throat of a volcano, and the volcanic breccia formed in a diatreme.
Landing a role on Glee was not an easy task for Stephen Tobolowsky.In fact, it involved a “ridiculously strange story” leading up to the audition. Tobolowsky, 73, played Sandy Ryerson — an ...