What type of volcanic structure is Shiprock New Mexico and how did it form?
What type of volcanic structure is Shiprock , in New Mexico, and how did it form ? Shiprock is a volcanic neck. It consists of igneous rock that crystallized in the vent of a volcano . The less-resistant rock surrounding this rock eroded away, leaving the volcanic neck standing high on the landscape.
What Magma is the most abundant?
What volcanic events formed Crater Lake Oregon?
Crater Lake partly fills one of the most visually spectacular calderas of the world, an 8-by-10-km (5-by-6-mi) basin more than 1 km (0.6 mi) deep formed by collapse of the volcano known as Mount Mazama during a series of explosive eruptions about 7,700 years ago.
What are the three main types of volcanoes quizlet?
The three main types of volcanoes are cinder cones , composite cones, and shield cones.
What type of structure is Shiprock New Mexico and how did it form quizlet?
Shiprock , New Mexico is a volcanic neck that formed when the volcano itself eroded away, leaving the crystallized igneous rock piercing through the Mancos shale.
Where do most shield volcanoes form quizlet?
Shield volcanoes mostly occur at divergent boundaries. Specifically, they can occur in rift valleys and mid-ocean ridges, which all form at divergent boundaries themselves. They also form at hotspots.
Which magma type has the lowest viscosity?
Which lava compositions has the greatest viscosity?
High-silica, low-temperature lavas are the most viscous and allow the greatest amount of pressure to build before they “let go” in an eruption. The low-silica, high-temperature produces a runny less viscous magma , less pressure can build up and will produce relatively gentle eruptions.
Which region has the greatest concentration of currently active volcanoes?
Which of the following best describes Shiprock a famous volcanic feature?
geo quiz 6
|A ________ volcano is a very large, gently sloping mound composed mainly of basaltic lava flows.||shield|
|Which of the following best describes Shiprock, a famous volcanic feature in New Mexico?||the eroded remains of a volcanic pipe and radiating dikes|
Is Crater Lake a supervolcano?
Crater Lake partially fills a type of volcanic depression called a caldera that formed by the collapse of a 3,700 m (12,000 ft) volcano known as Mount Mazama during an enormous eruption approximately 7,700 years ago. The caldera wall displays the geologic layering of lava flows through time.
Is the Kikai Akahoya volcano still active?
Kikai is still an active volcano . Minor eruptions occur frequently on Mount Iō, one of the post-caldera subaerial volcanic peaks on Iōjima. Iōjima is one of three volcanic islands, two of which lie on the caldera rim.
What are the three major kinds of volcanoes?
Individual volcanoes vary in the volcanic materials they produce, and this affects the size, shape, and structure of the volcano. There are three types of volcanoes: cinder cones (also called spatter cones ), composite volcanoes (also called stratovolcanoes ), and shield volcanoes .
What type of volcano is non explosive quizlet?
A dormant volcano is an active volcano that is not erupting, but supposed to erupt again.