What type of volcano is Zuni Bandera?
The Zuni-Bandera volcanic field consists of a large number of basaltic lava flow and cinder cones, and exhibits a number of striking features of hawaiian-style volcanism. Pahoehoe and a-a lavas are both represented, along with well-developed lava tube systems.
Which type of lava is thin and fast flowing?
Pahoehoe lava
Pahoehoe lava is characterized by a smooth, billowy, or ropy surface. Pahoehoe flows tend to be relatively thin, from a few inches to a few feet thick. In map-view the flows tend to be narrow and elongate.
What is thin lava called?
Pahoehoe. Pronounced “pa-ho-ho”, this type of lava is much thinner and less viscous than a’a. It can flow down the slopes of a volcano in vast rivers. The surface of the lava congeals into a thin crust that looks very smooth.
Which lava types typically flows most slowly?
Pahoehoe is a smooth and continuous lava crust. Pahoehoe forms when the effusion rate is low and consequently the velocity of lava flow is slow2. Pahoehoe lava flow is usually at least 10 times slower than typical aa lava flow5.
Is the Zuni-Bandera active?
Zuni-Bandera volcanic field (also known as Bandera lava field, Grants Malpais and Malpais volcanic field) is a volcanic field located in the state of New Mexico, United States….
| Zuni-Bandera Volcanic Field | |
|---|---|
| Age of rock | 3.8 million years |
| Mountain type | Volcanic field |
| Last eruption | 1170 BCE ± 300 years |
When did the Bandera volcano erupt?
some 10,000 years ago
Bandera exploded in volcanic fury some 10,000 years ago – very recent in geologic time. It is one of the finest examples of an erupted cinder cone and lava field in North America as well as one of the most accessible.
What is fast flowing lava called?
Discern the difference between pahoehoe and aa volcanic lava flows at Kilauea, Hawaii. Lava flowing toward the sea from Kilauea volcano, Hawaii, takes two recognizable forms: fast-flowing ropy lava called pahoehoe and thick blocky lava called aa. Encyclopædia Britannica, Inc.
What is fast moving lava called?
A pyroclastic flow is a dense, fast-moving flow of solidified lava pieces, volcanic ash, and hot gases.
What are the two types of lava flows?
Lavas, particularly basaltic ones, come in two primary types: pahoehoe (pronounced ‘paw-hoey-hoey”) and aa (pronounced “ah-ah”). Both names, like a number of volcanological terms, are of Hawaiian origin. A third type, pillow lava, forms during submarine eruptions.
Which lava is more viscous?
The most viscous lava is cool, high-silica lava called rhyolitic lava. This lava contains about 65-75% silicate and erupts at a temperature of about 650-800 degrees Celsius.
When was the last volcano eruption in New Mexico?
around 60,000 years ago
Capulin Volcano cuts an imposing figure above the stark New Mexico plains. The remnants of an extinct cinder cone that last erupted around 60,000 years ago, its 8,182-foot summit presents a unique landscape for visitors to explore. After all, you don’t get to drive to the top of a volcano every day.
Is Zuni Bandera active?
How old is the Zuni Bandera volcano?
The Zuni-Bandera volcanic field covers an area of 2460 km 2 along the Jemez lineament west of the Rio Grande Rift. An older volcanic episode, mostly from vents along the Chain of Craters, took place about 3. 8-3. 7 million years ago (Ma); the younger episode began about 1.
What is the Zuni-Bandera volcanic field?
The Zuni-Bandera volcanic field covers an area of 2460 km 2 along the Jemez lineament west of the Rio Grande Rift.
What is the age of lava in the Zuni-Bandera volcano?
Dunbar N W, Phillips F M, 2004. Cosmogenic 36Cl ages of lava flows in the Zuni-Bandera volcanic field, north-central New Mexico, U.S.A.. New Mex Bur Geol Geophys Bull, 160: 309-317.
How long has Bandera Crater been erupting?
and possessing a height of 2,533 metres (8,310 ft), Bandera Crater last erupted between 9,500 and 10,900 years ago. The nearly 17.5 mile long lava tube of ʻAʻā lava emanating from this crater is the longest in North America.