Precambrian
adjective
geologyspecializeduk/ˌpriːˈkæm.bri.ən/us/ˌpriːˈkæm.bri.ən/from or referring to theearliestperiodoftime, between about 4,600 and 543 millionyearsago, from when theearthwasformeduntil the firstsimpleformsoflifeappeared:
前寒武纪的（地质年代的最早阶段，迄今约46-5.43亿年前之间，自地球开始形成起至第一个简单形式的生命出现）Precambriantime前寒武纪时代／时期
Precambrianrocks前寒武纪岩石
ThesilveryPrecambrian quartzite is some of Australia’soldestexposedrock.
- Thedevelopmentof the Atlanticbeganasfarback as Precambriantimes.
- It is one of the mostcomprehensivestudiesfor any Precambrianinterval.
- Precambrianrocksoutcropovervastareasofcontinentalinteriors.
Geology - general words
- Anthropocene
- aquifer
- auriferous
- biozone
- Cambrian
- carboniferous
- cementation
- Cretaceous
- Holocene
- hoodoo
- interbed
- Jurassic
- karst
- plate tectonics
- post-depositional
- pyroclastic
- Quaternary
- sedimentation
- tectonic
- the rock cycle
You can also find related words, phrases, and synonyms in the topics:
Prehistory
Specific periods of time
Precambrian
noun[S]
geologyspecializeduk/ˌpriːˈkæm.bri.ən/us/ˌpriːˈkæm.bri.ən/the Precambrian
theearliestperiodoftime, between about 4,600 and 543 millionyearsago, from when theearthwasformeduntil the firstsimpleformsoflifeappeared:
It was in the Precambrian when the first single-celledmicrobesevolved.
The museum's Tower of Time referred to the Precambrian as anera.
- Theprojectwilladopta case-studymethodologyand willfocusonscientificstudiesof the Precambrian .
- The Precambrian refers to astretchoftimespanningfrom theinceptionof theEarthapproximately4.5billionyearsago to about 540 millionyearsago.
- Algae arefoundin thefossilrecorddatingback toapproximately3billionyearsin the Precambrian.
Geology - general words
- Anthropocene
- aquifer
- auriferous
- biozone
- Cambrian
- carboniferous
- cementation
- Cretaceous
- Holocene
- hoodoo
- interbed
- Jurassic
- karst
- plate tectonics
- post-depositional
- pyroclastic
- Quaternary
- sedimentation
- tectonic
- the rock cycle
You can also find related words, phrases, and synonyms in the topics:
Prehistory
Specific periods of time