Sentences with phrase «as igneous»

Not exact matches

But as Lucara has continued to process kimberlite, the igneous rock that sometimes contains diamonds, the company has been able to show a random distribution of very large stones in the mine's south lobe.

Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.

«As a general rule, light - colored crystals are lower density, and these are abundant in igneous rocks that make up the Earth's continents.»

Mars has been viewed as an almost entirely basaltic planet, with igneous rocks that are dark and relatively dense, similar to those forming the Earth's oceanic crust, Wiens noted.

The relationship is fascinating because it is backward: ordinarily, it is igneous rocks such as granite that would that intrude into sedimentary rocks.

Because we can not sample the deep Earth, we must deduce its composition either by looking at the clues hidden in igneous and metamorphic rocks, or by examining proxies for composition and structure such as the three - dimensional variation of the velocity of seismic waves produced by earthquakes and sampled by networks of seismometers on the surface.

They are actually the edges of roughly hexagonal columns of igneous rock, similar to other geometric landmarks such as Ireland's Giant's Causeway or Devils Postpile in California.

Working with Artur Ionescu of the Babes - Bolyai University in Cluj - Napoca, Romania, he has shown that ruthenium, a rare metal found in the igneous rocks beneath the site, can act as a catalyst, allowing methane to form in the lab at temperatures below 100 °C — similar to the temperatures at Yanartas (Geofluids, DOI: 10.1111 / gfl.12106).

In Earth's past the trigger for these greenhouse gas emissions was often unusually massive volcanic eruptions known as «Large Igneous Provinces,» with knock - on effects that included huge releases of CO2 and methane from organic - rich sediments.

The textbook explanation is that the Moho draws the line between the crust and the mantle: a demarcation between familiar igneous surface rocks - such as granites, basalts and gabbros - and those of the interior peridotites.

Given that the seismic signature of this material is essentially the same as crustal igneous rocks, there is no way of telling - other than to drill and sample everything between the seabed and the top few hundred metres of unadulterated mantle.

Interweaving the relative time scale with the atomic time scale poses certain problems because only certain types of rocks, chiefly the igneous variety Virtual Dating contains two options as well as a demonstration version.

Interweaving the relative time scale with the atomic time scale poses certain problems because only certain types of rocks, chiefly the igneous variety Personal property is generally considered property that is movable, as opposed to real property or real estate.

The man looks downright igneous, more rock formation than human man; at first, this is played off as a source of expected comedy.

Each question is a short answer question such as identifying the properties of humus and loam as well as thinking through the properties of igneous, metamorphic and sedimentary rock.

In one 1st grade class at Center City's Brightwood campus, for example, the teacher held 25 children rapt as she animatedly read to them about igneous rock.

Aside from the falls, also visit Moon Rock (a massive dome shaped landmark from which there are superb views), Swart Rante (igneous, black hills that serve as a border with the more fertile side of the reserve), Oranjekom and Ararat (great viewpoints), and Echo Corner (gorgeous scenery en route).

The latter may also occur in igneous rocks, such as in the caves on Santa Cruz Island, California, where waves have attacked the contact between the andesitic basalt and the agglomerate.

In metamorphic or igneous rock, this is typically either a fault as in the caves of the Channel Islands of California, or a dike as in the large sea caves of Kauai, Hawaii's Na Pali Coast.

Meanwhile, Igneous Shield's Major Mending buff will now be tied to the character's damage shield, meaning that if a damage shield is removed, the bonus goes away as well.

As a sxity year old geologist I've spent a good part of my life looking at sedimentary, metamorphic and igneous rocks in all parts of N. America.

A further reduction by carbonate sediment dissolution, and reactions with igneous rocks, such as silicate weathering and sediment burial, will take anything from tens to hundreds of thousands of years, or even longer.

When this occurs another massively common igneous and metamorphic phyllosilicate mineral called mica grows directly into the faults as well.