Kanto Loam - Kanto Loam

Japanese: 関東ローム - かんとうローム

A brown soil (loam) originating from Quaternary volcanic ash distributed widely in the Kanto region, it constitutes the Kanto Loam Layer (red soil layer). In southern Kanto, this volcanic ash was mainly supplied from the Hakone and Fuji volcanoes, and was divided into the Tama, Shimosueyoshi, Musashino, and Tachikawa Loam Layers, from oldest to newest. The Tama Loam Layer was subsequently further subdivided into several layers. The older the topographical surface, the thicker the loam layer. For example, the Shimosueyoshi surface is covered by all the loam layers below the Shimosueyoshi Loam Layer, the Tachikawa surface is covered by only the Tachikawa Loam Layer, and there is no loam layer on the alluvial surface that makes up Tokyo's downtown area. The loam layers are often sandwiched between several successive pumice layers and contain Paleolithic artifacts.
→ Related topics Kanto Plain | Saitama [Prefecture] | Sagamihara | Shimousa Plateau | Wind-spun layer | Mount Fuji | Musashino

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

関東地方に広く分布する第四紀の火山灰に起源する褐色土壌（ローム）で，関東ローム層（赤土層）を構成。この火山灰は，南関東ではおもに箱根，富士の両火山から供給され，古いほうから多摩，下末吉，武蔵野，立川の各ローム層に区分された。その後，多摩ローム層はさらにいくつかの層に細分されている。ローム層は古い地形面ほど厚く載る。たとえば下末吉面は下末吉ローム層以下の全ローム層を，立川面は立川ローム層のみを載せ，東京の下町をつくる沖積面にはローム層はない。ローム層はよく連続する何枚もの軽石層をはさみ，また旧石器を包含する。
→関連項目関東平野｜埼玉［県］｜相模原｜下総台地｜風成層｜富士山｜武蔵野

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