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Wenlock epoch : ウィキペディア英語版 | Wenlock (Silurian)
The Wenlock (seldomly also referred to as ''Wenlockian'') is the second series of the Silurian. It is preceded by the Llandovery series and followed by the Ludlow. Radiometric dates constrain the Wenlockian between and million years ago.〔(【引用サイトリンク】url=http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf )〕 == Naming and history == The Wenlock is named after ''Wenlock Edge'', an outcrop of rocks near the town of Much Wenlock in Shropshire (West Midlands, United Kingdom). The name was first used in the term "Wenlock and Dudley rocks" by Roderick Murchison in 1834 to refer to the limestones and underlying shales that underlay what he termed the "Ludlow rocks". He later modified this term to simply the "Wenlock rocks" in his ''the Silurian System'' in 1839.
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「Wenlock (Silurian)」の詳細全文を読む
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