David Bamber
Eric Slatt
Search results
Cast
Episode Guide
- 1. Suzy Arrives Feb 20, 1997
- One of the staffers dies.
- 2. The Interview Feb 27, 1997
- Eric Slatt interviews to be headmaster.
- 3. The Staff Meeting Mar 6, 1997
- The school gets unwanted media coverage.
Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor.
Learn the noun and verb meanings of chalk, a soft limestone or a writing material. See examples, etymology, and related phrases of chalk.
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Jun 13, 2024 · Chalk is a soft, white-to-grayish variety of limestone composed of shells of marine organisms. It is used for making lime, cement, fertilizer, and other products, and it forms extensive deposits in the Cretaceous Period.
- The Editors of Encyclopaedia Britannica
Oct 10, 2023 · Chalk is a soft, white, porous, sedimentary rock composed of calcium carbonate from microscopic marine organisms. Learn about its origin, characteristics, distribution, and applications in education, agriculture, construction, and culture.
Chalk is a type of limestone composed of calcium carbonate from marine organisms like foraminifera and algae. Learn how chalk forms, where it occurs, and how it is used for water and oil production.
Jun 8, 2018 · Learn about chalk, a form of limestone or gypsum used for writing and drawing. Find out how chalk is formed, quarried, processed, and colored.
