Sagamiko Group

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Sagamiko Group Sakai, 1987

It had been defined as a part of Setogawa Group.

Type locality: Lake Sagami, Sagamihara city, Kanagawa prefecture
Accretionary complex
Deposition: Paleogene - Oligocene (Radiolarians)

Sedimentary facies: Marine
Lithofacies: Ocean floor tholeiite (Basalt), Oceanic island tholeiite (Diabase)
Lithofacies (Minor): Basalt, Diabase, Picrite basalt, Talc-amphibolite, Serpentinite

Upper limit: Unconformity (Kosawa Formation, Gotentoge Terrace Deposit, Mukaihara Formation, Suarashi Terrace Deposit, Osawa Terrace Deposit, Sagamihara Terrace Deposit, Nakatsuhara Terrace Deposit, Tanahara Terrace Deposit, Minahara Terrace Deposit)
Lower limit: Thrust fault

Sagamiko Group
[ Upper ]
/--/--/--/--/-
Fukashiro Unit
/--/--/--/--/-
Gongenyama Unit
/--/--/--/--/-
Seto Unit
/--/--/--/--/-
Sasago Unit
/--/--/--/--/-
[ Lower ]

Shimanto Belt (Sagamihara, Kanagawa pref).
[ Upper ]
/--/--/--/--/-
Kobotoke Group
/--/--/--/--/-
Sagamiko Group
/--/--/--/--/-
[ Lower ]

Shimanto Belt
[ Upper ]
/--/--/--/--/-
Northern Shimanto Belt
/--/--/--/--/-
Southern Shimanto Belt
?--?--?--?--?-
[ Lower ]

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Lake Sagami, Sagamihara city, Kanagawa pref.; Aikawa city, Aiko county, Kanagawa pref.; Mount Ogiyama, Otsuki city, Yamanashi pref.; Mukatao, Uenohara city, Yamanashi pref.; Kuzuno river, Otsuki city, Yamanashi pref.

Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
Saruta and Takahashi (2012) Jour. Geol. Soc. Japan, vol.118, no.1, pp.53-58 DOI
Sakai (1987) Geology of the Itsukaichi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 5p.)