Pumice in the context of "Tenerife"

Palea Kameni, also known as Palia Kameni, is a volcanic island within the Santorini Caldera. The island was formed by a series of volcanic eruptions that formed large deposits of pumice and dacite lavas. The island's name translates to "Old Burnt Island".Palea Kameni is a private island, it was inhabited until it was bought in 1899 and sold in 1975.

Aspronisi (Greek: Ασπρονήσι) is an uninhabited island lying within the Santorini caldera. The island was originally formed by the massive Minoan eruption in the 2nd millennium BC, after which it was gradually built up by successive volcanic activity. The name Aspronisi, which means 'White Island' in Greek, is derived from the island being partially composed of white pumice.

Akrotiri (Greek: Ακρωτήρι, pronounced Greek: [akroˈtiri]) is a Cycladic Bronze Age settlement site on the volcanic Greek island of Santorini. The name comes from the nearby village of Akrotiri.

The settlement was destroyed during the Theran eruption sometime in the 16th century BC, and was buried in volcanic ash, which helped preserve its fine frescoes. Akrotiri has been excavated since 1967, after earlier excavations on the island.

Gyali (Greek: Γυαλί "glass", also spelled Giali or Yali, pronounced [ʝaˈli]) is a Greek volcanic island in the Dodecanese, located halfway between the south coast of Kos (Kardamaina) and Nisyros. It consists of rhyolitic obsidian lava domes and pumice deposits (which are mined in huge quantities). No historical eruptions are known, but the most recent pumice eruptions overlie soils containing pottery and obsidian artifacts from the Neolithic period (10,000–4,500 BC). The island has two distinct segments, with the northeastern part almost entirely made of obsidian and the southwestern part of pumice. These are connected by a narrow isthmus and beach made of modern reef sediments. Anciently, the island was known as Istros (Ancient Greek: Ἴστρος).

Dense-rock equivalent (DRE) is a volcanologic calculation used to estimate volcanic eruption volume. One of the widely accepted measures of the size of a historic or prehistoric eruption is the volume of magma ejected as pumice and volcanic ash, known as tephra during an explosive phase of the eruption, or the volume of lava extruded during an effusive phase of a volcanic eruption. Eruption volumes are commonly expressed in cubic kilometers (km).

Historical and geological estimates of tephra volumes are usually obtained by mapping the distribution and thickness of tephra deposits on the ground after the eruption is over. For historical volcanic explosions, further estimates must be made of tephra deposits that might have changed significantly over time by other geological processes including erosion. Tephra volumes measured in this way must then be corrected for void spaces (vesicles – bubbles within the pumice, empty spaces between individual pieces of pumice or ash) to get an estimate of the original volume of magma erupted. This correction can be made by comparing the bulk density of the tephra deposit with the known density of the original gas-free rock-type that makes up the tephra. The result is referred to as the dense-rock equivalent of the erupted volume.

A volcanologist, or volcano scientist, is a geologist who focuses on understanding the formation and eruptive activity of volcanoes. Volcanologists frequently visit volcanoes, sometimes active ones, to observe and monitor volcanic eruptions, collect eruptive products including tephra (such as ash or pumice), rock and lava samples. One major focus of inquiry in recent times is the prediction of eruptions to alleviate the impact on surrounding populations and monitor natural hazards associated with volcanic activity. Geologists who research volcanic materials that make up the solid Earth are referred to as igneous petrologists.

Pompeii (/pɒmˈpeɪ(i)/ pom-PAY(-ee); Latin: [pɔmˈpei̯.iː]) was a city in what is now the municipality of Pompei, near Naples, in the Campania region of Italy. Along with Herculaneum, Stabiae, and many surrounding villas, the city was buried under 4 to 6 m (13 to 20 ft) of volcanic ash and pumice in the eruption of Mount Vesuvius in 79 AD.

Largely preserved under the ash, Pompeii offers a unique snapshot of Roman life, frozen at the moment it was buried, as well as insight into ancient urban planning. It was a wealthy town of 10,000 to 20,000 residents at the time it was destroyed. It hosted many fine public buildings and luxurious private houses with lavish decorations, furnishings and artworks, which were the main attractions for early excavators; subsequent excavations have found hundreds of private homes and businesses reflecting various architectural styles and social classes, as well as numerous public buildings. Organic remains, including wooden objects and human bodies, were interred in the ash; their eventual decay allowed archaeologists to create moulds of figures in their final moments of life. The numerous graffiti carved on outside walls and inside rooms provide a wealth of examples of the largely lost Vulgar Latin spoken colloquially at the time, contrasting with the formal language of classical writers.

Cleaning tools include the following:

• Acoustic cleaning
• Air blaster
• Air knife
• Besom
• Broom
• Brush
• Building maintenance unit
• Camel-hair brush
• Carbon dioxide cleaning
• Carpet beater
• Carpet sweeper
• Chamois leather
• Cleret
• Cyclone dust collector
• Dishwasher
• Dry-ice blasting
• Feather duster
• Floor scrubber
• Floorcloth
• Hataki
• Hot water extraction
• Ice blasting (cleaning)
• Laundroid
• Laundry ball
• Lint remover
• Melamine foam
• Microfibre cloth
• Mop
• Mop bucket cart
• NAV-CO₂ system
• Needlegun scaler
• Parts washer
• Peg wood
• Peshtemal
• Pigging
• Pipe cleaner
• Pith wood
• Posser
• Pressure washing
• Propane burnisher
• Pumice
• Reason washing machine
• Scrubber (brush)
• Shaker broom vise
• Silent butler
• Soap shaker
• Sonic soot blowers
• Sponge (material)
• Squeegee
• Steam mop
• Strigil
• Swiffer
• Tawashi
• Thor washing machine
• Tongue cleaner
• Turk's head brush
• Vacuum cleaner
• Vacuum truck
• Vapor steam cleaner
• Wash rack
• Washing machine
• Wire brush