Kowada
Kowada, Akiruno city, Tokyo, Japan
Occurrence
Sediments subjected to diagenesis
Carbonate nodules included in Miocene Kosho Mudstone Member.
![Kowada](kowadaTOKYO.jpg)
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
Localities
- Kanuma (Weathered pumice, Imogilite)
- Bushi (Trace fossil, Siderite)
- Kowada (Nodule, Siderite)
- Nohori (Trace fossil, Vivianite)
Related Occurrences
- Albite-Epidote-hornfels facies
- Hornblende-hornfels facies
- Pyroxene-hornfels facies
- Sanidinite-hornfels facies