Iwaya Granite

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Iwaya Granite

Plutonic rocks
Late Cretaceous (80.9, 70.3 Ma, K-Ar)
Intruded by: Granodiorite dikes
Intruded in: Sumoto Granodiorite

Lithofacies: Biotite granite

Distribution (Width): ca. 1 km

Granitic rocks III
~~~~~~~~~~~~~~
Tosanji Granite
~~~~~~~~~~~~~~
Senzan Granite
~~~~~~~~~~~~~~
Kagaribayama Granite
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Iwaya Granite
~~~~~~~~~~~~~~

Younger Ryoke Granitoids (Awaji island)
[ Young ]
~~~~~~~~~~~~~~
Granitic rocks III
~~~~~~~~~~~~~~
Granitic rocks II
~~~~~~~~~~~~~~
[ Old ]

Ryoke Belt
~~~~~~~~~~~~~~
Ryoke Metamorphic Rocks
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Younger Ryoke Granitoids
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Older Ryoke Granitoids
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------ Transitional, ~~~~~~ Intrusive, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

Distribution: Matsuhonoura - Iwaya port - Cape Uzaki - Nagahama, Awaji city, Hyogo pref.

Takagi et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.9, pp.571-581 DOI
Huzita and Maeda (1984) Geology of the Suma District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 101p. (in Japanese with English abstract 7p.)