| 词汇 | quaternary |
| 释义 | Quaternary adjective geology specializeduk /kwəˈtɜː.nər.i/ us /ˈkwɑː.t̬ɚ.ner.i/ from or referring to the period of time from about 2.5 million years ago to the present, in which modern humans appeared: 第四纪的（迄今约250万前至今的地质时间段，这期间现代人出现） Layers of basalt, formed during the Quaternary period, extend from north to south and east to west. Quaternary glaciation第四纪冰川化 The earlier of the two geological epochs of the Quaternary period is termed the Ice Age in the northern hemisphere. The group will investigate coastal processes and assess these in the context of late Quaternary and Holocene conditions. Although Citlaltépetl is a Quaternary volcano with historic activity, it is at present in a dormant stage. Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene Permian petrographic petrographically petrography petrological Precambrian rockfall You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time Quaternary noun[ S ] geology specializeduk /kwəˈtɜː.nər.i/ us /ˈkwɑː.t̬ɚ.ner.i/ the Quaternary the period of time from about 2.5 million years ago to the present, in which modern humans appeared: The last 2 million years of the Earth's history is known as the Quaternary. He achieved an international reputation as a student of the Quaternary and his book The Great Ice Age became a classic. Three lakes within the study area fluctuated in size and depth during the late Quaternary. During the Quaternary, they were invaded from time to time by thick wedges of debris flows. In many geomorphological histories the Quaternary was often treated in less detail and the Holocene seldom referred to at all. Geology - general words aeolian Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene Permian petrographic petrographically petrography petrological Precambrian rockfall You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time |
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