Sentences with phrase «volcanic rock called»

The meteorite, known as Northwest Africa 7635 and discovered in 2012, was found to be a type of volcanic rock called a shergottite.

After the researchers analyzed the inclusions — each just 15 to 40 microns wide, or one - sixth to two - fifths of the diameter of a human hair — they found the inclusions contained the entire range of minerals one would expect of a volcanic rock called basalt that originally formed at the planet's surface and then crystallized under extreme high pressures and temperatures.

Not exact matches

The eruption is thought to have spewed almost 1 trillion gallons (3.7 trillion litres) of molten rock onto the surface, along with just as much sulphur into the atmosphere, triggering what researchers now call a «volcanic winter».

One possibility is that the eruption column of hot volcanic ash, gas and rock fragments now extending into the sky above the summit could collapse into what's called a pyroclastic flow and race down the flanks of the mountain.

The study shows that mounds of old volcanic rock, called seamounts, are the drains and spigots for a vast plumbing system that pumps hot, mineral - rich fluids under the sea floor.

«Geologists call it a rift because it's long and narrow,» explained Seth Stein, a co-author of the study, «but it's got much more volcanic rock inside it than any other rift on a continent, so it's also a LIP.

In addition to the traditional geothermal plants at the Geysers, a pilot project, which was suspended last September, intended to draw steam directly from the volcanic, nonporous rock called felsite that lies below the sandstone and is its heat source.

Layered volcanic rocks in Eastern Greenland that are up to 4 miles thick were formed during ancient volcanic eruptions that caused a global warming event called the Palaeocene - Eocene Thermal Maximum (PETM).

This is obvious when you look at a piece of volcanic rock (often called basalt), which is full of visible holes.

It is made up of folds of volcanic and what are called metasedentary rocks.

In many types of rocks, particularly volcanic rocks that have substantial amounts of water locked inside them, crystals are chock - full of oxygen - oxygen bonds called peroxy bonds.

Tarduno and his students had been studying massive lava flows that cover some of the High Arctic islands, and believes the same volcanic events that produced those igneous rocks also could have produced a series of islands along a low underwater mountain range in the Arctic Ocean called Alpha Ridge.

Geologists study rocks called tuff, or hardened volcanic ash, that they can date using specialized tests.

This place is most famous for its landmark called Morro Rock, a 581 - foot volcanic plug which is considered to be sacred by a couple of local Indian tribes.

Hours south, past fields of red - rock volcanic lava - tubes, distant volcanoes, and the palm - lined citrus town called San Ignacio, we stopped at a datil stand to buy palm dates.

We anchored one day in the lee of an uninhabited volcanic heap of Mars - like rock called Zuqar Island, in the south end of the Red Sea.