Figure 6
From: Microdiamond in a low-grade metapelite from a Cretaceous subduction complex, western Kyushu, Japan
Schematic geotectonic map of Kyushu showing the distribution of basement rocks. Cenozoic volcanic rocks and sedimentary formations are not shown. (a) Kyushu is divided into the Inner Zone, Outer Zone and the westernmost part (the Nagasaki Metamophic Complex: NMC) by a graben along the Usuki–Yatsushiro Tectonic Line (UYTL) and also by the Arita graben (AG). Two Miocene volcanic arcs are shown by thick orange lines. Purple arrows show possible subduction directions. (b) Cross section along the line W–E in (a). YF Yobukono–Seto fault, OG Oseto granodiorite, TGF Tsushima–Goto Fault, WBF western border fault of the Arita graben, SMB Sanbagawa Metamorphic Belt. Drawn with Adobe Illustaror CS6 (www.adobe.com/jp/) by Mori. Y.
