Discovery of a Cretaceous Formation in the Eastern Part of Kanto Mountainland, Central Japan

Shibuya, Hiroshi; Horiguchi, Mankichi

doi:10.5575/geosoc.73.593

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…associated along the southern boundary fault at the western extremity of the Sanchu Graben are lithologically closely similar with those of the Kurosegawa Terrane in the other areas Yokoyama, 1987 . 2 In the eastern margin of the Kanto Mountains Koma area, Saitama Prefecture , Early Cretaceous shallow marine deposits are exposed in an isolated small area Shibuya and Horiguchi, 1967;Ishii and Taguchi, 1983, 1986, 1988. Hagiwara et al 1999 showed that a linear zone connecting the Koma area and the Chichibu Basin is characterized by negative gravity anomaly and regarded this zone as an eastern extension of the Sanchu Graben.…”

Section: Introductionmentioning

confidence: 99%

CHIME zircon age of garnet-granite from the Naguri Fault Zone, Kanto Mountains, central Japan

Saka¹,

Fumiyo²,

Suzuki³

2005

Jour. Geol. Soc. Japan

View full text Add to dashboard Cite

The Chichibu Composite Terrane hereafter, Chichibu Terrane consists of the North and South Chichibu Belts with the Kurosegawa Terrane in between. The Kurosegawa Terrane represents typically a serpentinite mélange zone containing peculiar rocks which are exotic to the Jurassic to Early Cretaceous Chichibu accretionary complex hereafter, Chichibu Complex and is characteristically associated with the Cretaceous forearc basin deposits. In the Kanto Mountains Fig. 1 , the Sanchu Graben is generally accepted as the eastern extension of the Kurosegawa Terrane based on the following two facts; 1 the Cretaceous forearc basin deposits are trapped, and 2 serpentinites occur along a part of its southern boundary fault Fig. 1. The Sanchu Graben is interrupted by the Miocene Chichibu Basin on the east. On this account, the Chichibu Terrane in the western half of the Kanto Mountains is demarcated into the North and South Chichibu Belts by the Sanchu Graben e.g., Hisada and Kishida, 1986; Iwasaki et al., 1989. Whereas, in the eastern half, subdivision of the Chichibu Terrane is provisional Fig. 1 and isolated patch-like areas within the South Chichibu Belt are assigned to the Kurosegawa Terrane The Conveners of the Paleo-Mesozoic Symposium of the Annual Meeting in Saitama, 1995. Rocks found in several areas of the Kanto Mountains are correlated with the constituent of the Kurosegawa Terrane hereafter, Kurosegawa-rocks. 1 Serpentinites

show abstract

Section: Introductionmentioning

confidence: 99%