cementation

cementation

In geology, the hardening and welding of clastic sediments (those formed from preexisting rock fragments) by the precipitation of mineral matter in the pore spaces. It is the last stage in the formation of sedimentary rock. Many minerals may act as cements; the most common is silica (generally quartz), but calcite and other carbonates also occur, as do iron oxides, barite, anhydrite, zeolites, and clay minerals.

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cementation [‚sē‚men′tā·shən]

(chemistry)

The setting of a plastic material.

(engineering)

Plugging a cavity or drill hole with cement. Also known as dental work.

Consolidation of loose sediments or sand by injection of a chemical agent or binder.

(geology)

The precipitation of a binding material around minerals or grains in rocks.

(metallurgy)

High-temperature impregnation of a metal surface with another material.

Conversion of wrought iron into steel by packing layers of bars in charcoal sealed with clay and heating to 1000°C for 7-10 days.