翻訳と辞書 Words near each other ・ Brighton-Le-Sands, New South Wales ・ Brightons ・ BrightPath Foundation ・ Brightpearl ・ Brightpod ・ BrightPoint ・ BrightQube ・ Brightray ・ Brightroam ・ BrightRoll ・ Brights (department store) ・ Brights Grove, Ontario ・ Brights movement ・ Brights, Virginia ・ Brightsand River ・ Brightseat Formation ・ Brightshade, Kentucky ・ Brightside ・ Brightside (album) ・ Brightside Apartments ・ Brightside Group ・ Brightside railway station ・ Brightside Station ・ BrightSide Technologies ・ Brightside, California ・ Brightside, South Yorkshire ・ BrightSource Energy ・ Brightstar Corporation ・ BrightStar Gold Mine ・ Brightstar partners Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Brightseat Formation ： ウィキペディア英語版 Brightseat Formation The Brightseat Formation is an exposure of marine sedimentary rock beds of Upper Cretaceous/Lower Paleocene age (65 MY to 55.5 MY), in Landover, Maryland. The exposure is located at Brightseat Road between Sheriff and Landover Roads. The site is currently owned by the Maryland-National Capital Park and Planning Commission. It was given its name by R.R. Bennett and G.G. Collins in 1952.〔Bennett, R.R., and Collins, G.G., 1952, Brightseat Formation, a new name for sediments of Paleocene age in Maryland: Journal of the Washington Academy of Science, v. 42, no. 4, p. 114–116.〕 According to the Maryland Geologic Survey, the exposure consists of "Gray to greenish-gray, micaceous, argillaceous, sparsely glauconitic, fine- to coarse-grained sand, locally indurated calcareous beds; phosphatic pebbles; thickness 0 to 20 feet."〔Maryland Geological Survey - Coastal Plain Rocks and Sediments 1968〕 ==Research== Available research on the flora and fauna of the Brightseat Formation is decades-old. In 1968, thirty-five species of minute crustaceans, ostracodes, mostly cytheraceans, were found at outcrops of the Brightseat Formation, including 13 new species.〔Journal of Paleontology v. 42 no. 1 p 100-142 January 1968〕 The presence of otoliths, calcareous secretions that accumulate within the auditory chambers of bony fish, indicate the presence of fish fauna in the formation.〔Travisono, Jeanne. 1981. AAPG Bulletin Volume 65 p 656〕 The Brightseat Formation has also yielded three taxa of sea turtles: ''Taphrosphys sulfates'' (Leidy), ''Agomphus'' sp., and ''Osteopygis emarginatus'' Cope.〔Weems, R. E. 1988. Paleocene turtles from the Aquia and Brightseat formations, with a discussion of their bearing on sea turtle evolution and phylogeny. Proceedings of the Biological Society of Washington 101:109–145.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Brightseat Formation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.