What Is A Basaltic Lava Flow?

What are the different types of basalt lava flows?

There are two major types of basaltic lava flow, ‘ a’a and pahoehoe .

These are Hawaiian words that have no meaning other than the type of lava, and they have been adopted by geologists working in other basaltic areas besides Hawai’i..

Is basaltic lava dangerous?

It can also clog up the volcanic vent and form blocks that resist the flow of lava. … But most importantly, highly viscous lava is associated with explosive eruptions and dangerous pyroclastic flows. An example of a low viscosity (fast flowing) lava is basaltic lava.

Can you outrun lava?

Could I outrun the lava and make it to safety? Well, technically, yes. … Most lava flows — especially those from shield volcanoes, the less explosive type found in Hawaii — are pretty sluggish. As long as the lava doesn’t find its way into a tube- or chute-shaped valley, it will probably move slower than a mile per hour.

What are 4 types of lava?

The most common way to divide lava flows into distinct types is following: Pahoehoe lava flow, Aa lava flow, Blocky lava flow, and also Pillow lava flow. Sometimes Turbulent lava flow is also added, but the latter is only of theoretical interest to scientist because we will not see that type of lava flow in the nature.

What is the hottest lava?

Bright red lava flows in Hawaii can get as hot as 1,165 F, with the glowing orange flows getting hotter than 1,600 F, according to USGS. And when rock is seriously melting, such as the magma within the Hawaiian volcano of Kilauea , it can reach 2,120 F, according to USGS.

What lava contains?

When lava erupts it is made up of a slush of crystals, liquid, and bubbles. The liquid “freezes” to form volcanic glass. Chemically lava is made of the elements silicon, oxygen, aluminum, iron, magnesium, calcium, sodium, potassium, phosphorus, and titanium (plus other elements in very small concentrations.

Can a diamond melt in lava?

According to Wikipedia, the temperature of lava is between 700 and 1200 °C (973 to 1473 K). The melting point of Diamond at about 100,000 atm is 4200 K, which is much higher than the temperature of lava. So, it is impossible for lava to melt a diamond.

Can lava melt metal?

Liquid lava temperature is not very high, and won’t melt a chunk of steel for example. Consider this – your normal large firewood burns at 600-800 degrees, which is just a little bit less than liquid lava temperature. You can melt lead, aluminium and maybe copper in this (with due insulation), but that’s about it.

What is basaltic flow?

THE WORD basalt is said to have an Ethiopian origin, meaning “black stone.” Basalt is a dark gray to black, dense to finely grained igneous rock that is the result of lava eruptions. Basalt flows are noneruptive, voluminous, and characterized by relatively low viscosity. …

What type of lava flows the fastest?

The most common lava is basaltic, which is as fluid and as free-flowing a lava as you’ll likely come across. Compared to most types, it’s made of a lower percentage of silicon and oxygen chains. These elements form the “framework” of the lava, so with less of them present, the lava less viscous, and it can flow faster.

Is lava hotter than fire?

In fact, as it spills out onto Earth’s surface as lava, the runny rock’s temperature is only a little lower than the hottest part of a candle flame: about 1200 °C. On the other hand, a big blob of lava contains many more bouncing particles than a small candle flame, so it has a lot more heat energy.

What is a basic lava?

Lava: Magma that reaches the earth’s surface is called lava. It may be acidic or basic. Acidic lava is viscous, is lighter in colour and has higher silica content. Basic lava is non-viscous, is darker in colour and has lower silica content.

What are 3 types of magma?

There are three basic types of magma: basaltic, andesitic, and rhyolitic, each of which has a different mineral composition. All types of magma have a significant percentage of silicon dioxide. Basaltic magma is high in iron, magnesium, and calcium but low in potassium and sodium.

What makes Lava thick?

The cooler the lava, the higher the viscosity (the thicker it is). Composition: he more felsic the lava (the more silica in the lava), the higher the viscosity because silica forms chains in the cooling lava even before it crystallizes. The more mafic the lava (the less silica in it), the lower the viscosity.

Is basaltic lava thick or thin?

They are relatively thin (1-2 m) and very fluid with low viscosities. They advance downslope in a sort of smooth “rolling motion.” The front of the flow usually advances as a thin (< 20 cm) glowing lobe that will chill and crust over after 1-2 meters of flow.

What are the 2 types of lava?

Lava Types: Pahoehoe and Aa 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.

Can lava flow uphill?

Pahoehoe Lava… Since it tends to flow more as a thick liquid it can pour uphill as well as downhill and can create a huge variety of interesting shapes. If pahoehoe lava flows over a fairly flat ground it will coat the ground much like a parking lot – with a thick, smooth, flat coating of lava.

What is dried lava called?

igneous rockLava rock, also known as igneous rock, is formed when volcanic lava or magma cools and solidifies. It is one of the three main rock types found on Earth, along with metamorphic and sedimentary.

How fast can lava flow?

In general, lava flows slowly (0.25 mph), with maximum speeds between 6–30 mph on steep slopes. An exceptional speed of 20–60 mph was recorded following the collapse of a lava lake at Mount Nyiragongo.

How far can lava flows go?

Viscous andesite flows move only a few kilometers per hour (couple feet per second) and rarely extend more than 8 km (5 mi) from their vents. Viscous dacite and rhyolite flows often form steep-sided mounds called lava domes over an erupting vent.

Is lava rock a basalt?

Basalt is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Basalt commonly features a very fine-grained or glassy matrix interspersed with visible mineral grains. …