Slate

Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression.

A very strong foliation is called "slaty cleavage". It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression. When expertly "cut" by striking parallel to the foliation, with a specialized tool in the quarry, many slates will form smooth flat sheets of stone which have long been used for roofing, floor tiles, and other purposes. Slate is frequently grey in color, especially when seen, en masse, covering roofs. However, slate occurs in a variety of colors even from a single locality; for example, slate from North Wales can be found in many shades of grey, from pale to dark, and may also be purple, green or cyan. Slate is not to be confused with shale, from which it may be formed, or schist.

Slate (surname)

Slate is a surname. Notable people with the surname include:

Spider Riders

Spider Riders (スパイダーライダーズ ~オラクルの勇者たち~, Supaidāraidāzu ~Orakuru no Yūsha-tachi~, Spider Riders ~the Heroes of Oracle~) is a series of science fiction novels first published in December 2004, published by Newmarket Press written by Tedd Anasti, Patsy Cameron-Anasti and Stephen D. Sullivan (books 2–3). The stories became the basis of the anime series produced by Cookie Jar Entertainment of Canada and Bee Train of Japan. The three novels are titled Spider Riders: Shards of the Oracle, Spider Riders: Reign of the Soul Eater, and Spider Riders: Quest of the Earthen. Spider Riders broadcasts on Teletoon, This TV, and used to broadcast on Kids' WB!. Koichi Mashimo co-directed the staff at Bee Train with Takaaki Ishiyama. Writer Yosuke Kuroda adapted the novels. Robert Pincombe and Shelly Hoffman wrote the English version.

Plot

Eleven-year-old Hunter Steel searches for the legendary inner world by following the instructions in his grandfather's journal. He enters a cave where he finds a mysterious manacle that attaches itself to him. A spider startles Hunter, who falls into a hole to the center of the Earth and into the subterranean world of Arachna. There, he discovers a small group of elite warriors struggling to survive and to save Arachna from the attack of giant insect mutants. The warriors are children, each fighting with the help of their own 10 ft (3.0 m) battle spiders. They call themselves "Spider Riders". In the English TV series, the ages of the characters were reduced.