The Aalenian (pronEng|ɑːˈliːniən) is a subdivision of the
Middle Jurassicepoch of the geologic timescalethat extends from about 175.6 Ma to about 171.6 Ma (million years ago). It was preceded by the Toarcianera and succeeded by the Bajocian.
The stage takes its name from the town of
Aalen, some 100 km east of Stuttgartin Germany. The town lies at the southwestern end of the Frankischer Jura.
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aalenian — AALENIÁN, Ă, aalenieni, e, s.n., adj. 1. s.n. Primul etaj al jurasicului mediu sau ultimul etaj al jurasicului inferior. 2. adj. Care aparţine aalenianului (1), privitor la aalenian. [pr.: a a le ni an] – Din fr. aalénien. Trimis de cata,… … Dicționar Român
Aalenian — 1. noun A subdivision of the Middle Jurassic period. 2. adjective Of or pertaining to the Aalenian period … Wiktionary
aalenian — The oldest stage of the Middle Jurassic … Dictionary of automotive terms
Aalenian — … Useful english dictionary
Aalenian Stage — ▪ geology lowest of the four divisions of the Middle Jurassic Series, representing all rocks formed worldwide during the Aalenian Age, which occurred between 175.6 million and 171.6 million years ago during the Jurassic Period. The Aalenian … Universalium
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