- cratons
- n. hard and stationary part of the Earth's crust (Geology)
English contemporary dictionary. 2014.
cratons
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List of shields and cratons — List of shields= *African Shield AKA Ethiopian Shield *Amazonian Shield of central South America *The Angaran Shield of West Siberia *Arabian Nubian Shield *(Western) Australian Shield *Baltic Shield of Scandinavia and Eastern Europe *Canadian… … Wikipedia
Vaalbara — is theorized to be Earth s first supercontinent, beginning its formation about 3,600 million years ago, completing its formation by about 3,100 million years ago and breaking up by 2,500 million years ago. The name Vaalbara is de … Wikipedia
Craton — Geologic provinces of the world (USGS) Shield … Wikipedia
Africa — /af ri keuh/, n. 1. a continent S of Europe and between the Atlantic and Indian oceans. 551,000,000; ab. 11,700,000 sq. mi. (30,303,000 sq. km). adj. 2. African. * * * I Second largest continent on Earth. It is bounded by the Mediterranean Sea,… … Universalium
AFRIQUE - Géologie — Du point de vue géologique, on désigne sous le terme de bouclier africain ou, simplement, d’Afrique l’ensemble formé par le continent africain, la péninsule arabique et l’île de Madagascar. En effet, ces deux derniers éléments n’ont été séparés… … Encyclopédie Universelle
Craton — Les grandes régions géologiques (USGS) Les cratons apparaissent en orange Un craton (du grec κράτος = kratos force) est un élément de lithosphère continentale possédant une identité géologique, notamment en termes de nature des roches et de… … Wikipédia en Français
South America — South American. a continent in the S part of the Western Hemisphere. 271,000,000; ab. 6,900,000 sq. mi. (17,871,000 sq. km). * * * Continent, Western Hemisphere. The world s fourth largest continent, it is bounded by the Caribbean Sea to the… … Universalium
ANTÉCAMBRIEN — Les temps géologiques antérieurs au début du Cambrien, qui voit l’éclosion des premières faunes utilisables en stratigraphie, sont qualifiés d’antécambriens. Les terrains formés durant ces périodes sont groupés sous le terme général… … Encyclopédie Universelle
Kenorland — was one of the earliest supercontinents on Earth. It is believed to have formed during the Neoarchaean Era 2.7 billion years ago (2.7 Ga) by the accretion of Neoarchaean cratons and the formation of new continental crust. Kenorland comprised what … Wikipedia
Trans-Hudson orogeny — [ North American craton, also called Laurentia.] [ Wyoming, Superior and Hearne cratons] The Trans Hudson orogeny, Trans Hudsonian orogeny, Trans Hudson orogen (THO), or Trans Hudson Orogen Transect (THOT), (also referred to as the Trans… … Wikipedia
