| 翻訳と辞書 |
| Dinosaur Cove ： ウィキペディア英語版 |
Dinosaur Cove
The Dinosaur Cove in Victoria, Australia is a fossil-bearing site in south-east of the continent where the Otway Ranges meet the sea to the west of Cape Otway, adjacent to Great Otway National Park (''map''). The inaccessible ocean-front cliffs include fossil-bearing strata that date back to about 106 million years ago and has provided discoveries important in research of natural history of dinosaurs in Australia and the Southern Hemisphere as a whole.
== Geological time-line ==
During the Early Cretaceous the location was a flood plain within a great rift valley that formed as Australia started to separate northward from Antarctica. Sand, mud and silt deposits covered and sometimes preserved the remains of dead animals and plants. As the rift valley sank, the deposits were overlaid by sediment, which turned to rock under pressure. In the last 30 million years the sediments have been uplifted to form the Otway Ranges and Strzelecki Ranges, bringing them near the surface again.
The richest find of petrified dinosaur bones is confined to narrow thin (up to 0.3 m) layers, most likely ancient stream beds serving as repositories of the bones of smaller animals.
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「Dinosaur Cove」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.
|
|