...A sedimentary structure consisting of laminae of biological origin, the word deriving from stromatolith, named by E. Karkowski in 1908. The appearance can be flat or wavy mat-like (algal mat), dome-like, nodular, spherical, or columnar, but the characteristic laminar structure is formed by overlapping layers of 0.6 to 1.0 mm in thickness. The overall thickness and diameter vary widely, ranging from about 1 cm to over 1 m. *Some of the terminology explanations that mention "Algarmat" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…生物起源のラミナ(葉理)にとむ堆積構造のことで,1908年にE.カルコフスキが名づけたストロマトリスstromatolithが語源。外観は平坦ないし波型マット状(アルガルマットalgal mat),ドーム状,ノジュール状,球状,柱状といろいろだが,特徴となるラミナ構造は,厚さ0.6~1.0mmの層が重なりあってつくる。全体の厚さや直径は1cm程度のものから1mをこすものまであり変化にとむ。… ※「アルガルマット」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 |
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