Fig 1 - uploaded by Yutaka Takahashi
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Geological map of pre-Tertiary basement rocks in Awaji Island showing sample localities (modified from Takahashi, 1995).
Contexts in source publication
Context 1
... on lithology and field occurrence, granitic rocks in Awaji Island are divided into 11 bodies, which are composed of three groups: Granitic Rocks I, II and III ( Takahashi and Hattori, 1992; Fig. 1). The Granitic Rocks I, II and III correspond to the Older Ryoke Gra- nitic Rocks, Younger Ryoke Granitic Rocks and San- yo type granitic rocks, respectively. Based on Sr and Nd isotopic compositions, these granitic rocks belong to the South Zone ( Kagami et al., 2000). The field oc- currence and petrography of these granitic rocks are ...
Context 2
... data for the Granitic Rocks III include a K-Ar biotite age of 86.7 ± 4.3 Ma and an Rb-Sr whole-rock isochron age of 83.8 ± 4.9 Ma from the Tosanji Granite, a K-Ar biotite age of 69.5 ± 3.5 Ma and an Rb-Sr whole-rock isochron age of 84.1 ± 9.0 Ma from the Senzan Gran- ite, an Rb-Sr whole-rock isochron age of 75.5 ± 5.8 Ma from the Kagaribayama Granite, K-Ar biotite ages of 70.3 ± 3.5 Ma and 80.9 ± 4.0 Ma and an Rb-Sr whole- rock isochron age of 76.4 ± 3.9 Ma from the Iwaya Fine-grained Gr. Yuhara et al. Fig.1 Granite, and an Rb-Sr whole-rock isochron age of 74 ± 12 Ma from fine-grained granite. ...
