aalenian
1aalenian — 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,… …
2Aalenian — The Aalenian (pronEng|ɑːˈliːniən) is a subdivision of the Middle Jurassic epoch of the geologic timescale that extends from about 175.6 Ma to about 171.6 Ma (million years ago). It was preceded by the Toarcian era and succeeded by the Bajocian.… …
3Aalenian — 1. noun A subdivision of the Middle Jurassic period. 2. adjective Of or pertaining to the Aalenian period …
4Aalenian 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 …
5aalenian — The oldest stage of the Middle Jurassic …
6Aalenian — …
7Jurassic — Period 199.6–145.5 million years ago …
8Middle Jurassic — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …
9Pliensbachian — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …
10Oxfordian (stage) — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …
