| 词汇 | carboniferous |
| 释义 | carboniferous adjective chemistry, geology specialized uk/ˌkɑː.bəˈnɪf.ər.əs/ us/ˌkɑːr.bəˈnɪf.ɚ.əs/ 含碳的;碳质的;产碳的 containing or producing carbon carboniferous rocks 含碳的岩石 Carboniferous adjective geology specialized uk/ˌkɑː.bəˈnɪf.ər.əs/ us/ˌkɑːr.bəˈnɪf.ɚ.əs/ 石炭纪（距今约3.63亿至2.9亿年前的地质时期，爬行动物出现，该时期覆盖的广袤森林后来形成了地球的煤层） from or referring to the period of time, between around 363 and 290 million years ago, when the first reptiles appeared and there were large forests covering the areas that later formed earth's coal layers Sometimes you can see fossilised creatures that lived in the swamps of the Carboniferous era. Taking a closer look at Carboniferous rocks reveals distinct cycles in the rock layers, each covering around 100,000 years.
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