Sentences with phrase «volcanic rock materials»

In addition to clay and layers of glaze, Regel also uses volcanic rock materials, basalt, granite, and feldspars to form the main body of her pieces, resulting in visually complex surfaces and textures.

Not exact matches

Zipkin contrasts working with specular hematite — a heavy, glittery rock that's deep purple - red and has a high iron content — with material much lighter in both color and iron content from Kenya's volcanic Rift Valley: «They're both ochre, but elementally and chemically they are radically different.»

The material, they believe, was recycled as older volcanic rocks forming the roofs of magma chambers collapsed and remelted during eruptions, only to be reejected in the next volcanic outburst.

Pore spaces that shelter subsurface microbes areconstricted to the vanishing point in metamorphic rocks buried over eons byfurther sedimentation, volcanic eruptions, or massive folding of Earth's crust.And dense crystalline material formed by melting — basic igneous rock — offerslittle housing or dining.

Their claim was especially surprising because EETA 79001, like all Martian meteorites, is a volcanic rock, in which you wouldn't expect to find sedimentary material.

A group of former and current Arizona State University researchers say chemical differences found between rocks samples at volcanic hotspots around the world can be explained by a model of mantle dynamics that involves plumes, upwellings of abnormally hot rock within the Earth's mantle, that originate in the lower mantle and physically interact with chemically distinct piles of material.

Brought to Earth's surface in eruptions of deep volcanic material, these rocks hold clues as to what is going on deep beneath Earth's surface.

However, they add, testing has affected both the limestone and the underlying volcanic rock in a way which is likely to increase «the longer - term potential for leakage of radioactive material».

When basalt — a volcanic rock that makes up roughly 70 percent of the earth's surface — is exposed to carbon dioxide and water, a chemical reaction occurs, converting the gas to a chalk - like solid material.

Lava rock may quickly lower pH and some volcanic material is sharp enough to cut fish that rub against it.

Most facilities in Casa Chameleon are made from natural materials like bamboo and volcanic rocks, which gives the place an exotic feel.

The Therasia Resort and spa was built using local stones obtained from the volcanic rocks of Mount Etna and also local materials like cedar wood and glazed Sicilian terracotta.

Geologically the area is very complex, being a combination of marine sedimentary rocks of the Cretaceous - Tertiary period and intrusive volcanic material, including lavas and granites.

Built beyond the boundaries of the urban plan, on a hillside of volcanic rock, the self - made neighborhood required an approach to building, materials, and community solidarity that has served as both a metaphor and a methodology for Cruzvilleagas» ongoing approach to artmaking.

They found that the diatom - rich sediments, deposited during the warm intervals, were predominantly composed of material from one terrane - the Jurassic to Cretaceous volcanic rocks and associated sedimentary rocks of the Ferrar Large Igneous Province (FLIP).