Is pahoehoe a type of lava?

Answer 1

No. Mount St Helens would produce block lava flows rather than pahhoehoe or a'a because of the high silica content. Currently there are no lava flows on that volcano but there is a lava dome made primarily of dacite.

Answer 2

No. Pahoehoe (as well as a'a) lava is of mafic composition (rich in iron and magnesium, poor in silica) and form basalt when it cools. Composite volcanoes usually erupt material of intermediate to felsic composition (felsic is rich in alkalis, aluminum, and silica), with lavas cooling into rocks such as andesite, dacite, and rhyolite.

Answer 3

No. Both pahoehoe and a'a are forms of basaltic lava flows. Mount Cleveland is different in two ways. First, the material it erupts is andesitic, meaning it has more silica and less iron and magnesium than basalt. Second, Mount Cleveland's eruptions are usually explosive, forming clouds of ash and pumice rather than lava flows.

Answer 4

Yes. Pahoehoe is a variety of basaltic lava.

Answer 5

Kilauea produced boht pahoehoe and a'a. It often starts out as pahoehoe and turns into a'a further downhill as it cools.

Answer 6

Not always. Shield volcanoes produce basaltic lava, which can form into either pahoehoe or a'a. Sometimes both are found in the same lava flow.

Answer 7

yes!