"メキシコ共和国Sierra Madre Oriental北部の鉱化作用の特性について(その1, 地質篇)"
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- 竹田 英夫
- 地質調査所鉱床部
書誌事項
- タイトル別名
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- "Review of the geology and mineralization in northern part of Sierra Madre Oriental, Mexico (Part 1, Geology)."
抄録
The northern part of Sierra Madre Oriental is composed mainly of calcareous and clastic sediments of Upper Jurassic to Upper Cretaceous age. The initial transgression had started in Divesian-Kimmeridgian stage, and thick layers of evaporites were accumulated under sublittoral condition. Coahuila Peninsula and Tamaulipas Island were still emerged at the begining of Neocomian stage. Paleozoic basement was then covered unconformably by Lower Cretaceous sediments. Early Cretaceous transgression spread over almost all the area, and deep and/or shallow depositional environments persisted until Albian stage according to the various evolutional stages of Mexican Geosyncline. Upper Cretaceous sedimentation was regressive, and the area was totally uplifted at the end of this age. The Mesozoic sediments were strongly folded and faulted, accompanied by Tertiary volcanics and intrusives during Laramide Orogeny, and the saline residues appeared to have played an essential role in this deformation. Recent geochronological data supplied from a cooperative survey between Metal Mining Agency of Japan and Consejo de Recursos Minerales indicate that the principal folding period was in 45-35 m.y. and the main igneous activities were also in Paleogene. However, some plutonic rocks are dated as Miocene-Pliocene.
収録刊行物
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- 鉱山地質
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鉱山地質 30 (164), 363-371, 1980
資源地質学会
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詳細情報 詳細情報について
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- CRID
- 1390282681501405568
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- NII論文ID
- 130003639558
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- ISSN
- 00265209
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可