...The latter are more abundant and can be treated as clastic rocks. They are classified according to particle size into calcareous pebble, calcareous sandstone, calcareous siltstone, and calcareous mudstone. They are also broadly divided into those with a microcrystalline calcite matrix (micrite) and those cemented with coarse calcite (sparite), and are further divided according to the ratio of the constituent particles (carbonate clastic fragments, oolite, biological remains, pellets). There are many proposals for the classification of limestone, but no consensus has been reached. *Some terminology explanations that mention "sparite" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…後者が量的には多く,それらは砕屑岩として扱うことができ,粒径により石灰レキ岩,石灰砂岩,石灰シルト岩,石灰泥岩に区分される。また,微晶質方解石基質(マイクライトmicrite)をもつものと,粗粒方解石により膠結(こうけつ)されたもの(スパーライトsparite)に大別され,構成粒子(炭酸塩砕屑片,オーライトoolite,生物遺骸片,ペレット)の量比により,それぞれ細分される。石灰岩の分類には多くの提案があり,一致をみていない。… ※「sparite」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
...There are many festivals, including a monthly ...
…They have dense fur, and their ears are small an...
…All of them are mycophagous and live on mushroom...
In 1668, the Prince of Orange, who was in exile i...
He was a children's illustrator, printmaker, ...
An oasis state that flourished in the Turfan Basi...
In the Muromachi Shogunate, direct vassals with t...
… [Minoru Imajima]. … *Some of the terminology th...
A building material made by kneading clay by hand ...
A mammal of the Suidae family in the order Artioda...
...His work "English Grammar Studies" (...
…A Chinese charity organization. Its official nam...
…One of the most well-known clowns who appear as ...
School nurses are educational staff who are employ...
⇒ Letterpress Kappan Source: About Shogakukan Digi...