A Basis of the Argument for Possibility of a New Coal-Field in Kumamoto Prefecture, Middle Kyushu
スポンサーリンク
概要
- 論文の詳細を見る
The Paleogene formation, scattered in the vicinity of Hokonoko, Kumamoto Prefecture, has been described in a few reports, but until now, its stratigraphy and geologic age had not been determined We have recognized, in this area the following two new formations in the Paleogene: the Kannondake formation and the Hokonoko formation.<BR>The Kannondake formation contains coal seams and represents the upper half of the Paleogene in question. Some fossil marine mollusks obtained from this formation indicate the stratigraphic position of the formation. They are : Faunus nipponicus NAGAO, Melania (?) miikensis NAGAO, etc. Considering these fossils and rock facies, the Kannondake formation is equivalent to the coal-bearing Komenoyama. formation, which belongs to the lowermost part of the Ariake group.<BR>The Hokonoko formation is the lower half of the Paleogene in question. The formation closely resembles the Akasaki formation, Amakusa stage, in all of the important points: non-marine, non-fossiliferous and purplish, and the formation stratigraphically underlies the coal-bearing formation.<BR>The geologic structure of the formations in this area is very simple. The Paleogene is divided into segments and scattered in tiers along the valley walls by some 'graben'-faults trending NE.<BR>These formations are distributed in the region between the Amakusa and the Asakura coal-field and are equivalent to the Komenoyama formation of the Miike coal-field. The distribution of the lowermost part of the Paleogene coal-bearing formation is presented as one of the proofs of the existence of a new coal-field under the Plain of Kumamoto.
- 資源地質学会の論文
資源地質学会 | 論文
- 資源情報 2008年度秋季講習会 西南北海道の中新世熱水活動と金属鉱化作用
- 飛騨帯の石灰岩類 -地質特性・構成鉱物・岩石組織とドロマイトの産状-
- 飛騨帯神岡鉱床周辺の変閃緑岩・変斑れい岩類
- 神岡鉱床周辺のいわゆる伊西ミグマタイトとスカルン鉱(杢地鉱)中の単斜輝石の組成変化
- 北部北上山地南東部, 大谷山鉱山北方地域に分布する層状マンガン鉱床の層位学的研究