TrekGEO > Mineral Trail > Kanto region > Tokyo > Kowada

Japanese page


Kowada, Akiruno city, Tokyo, Japan


Sediments subjected to diagenesis

Carbonate nodules included in Miocene Kosho Mudstone Member.


Outcrop of Kosho Mudstone Member. The outcrop is composed of black mudstone showing clear stratification with a slump structure. Siderite-calcite nodules with a lamellar structure are very rarely observed and was described as fossile stromatolite. The scale coin is placed at a little below the center.

Reported Minerals

  • Siderite
  • Calcite

Mineral Assemblages

  • Siderite - Calcite
Copyright (c) 2023 NariNari, All Rights Reserved.