Formation (Stratigraphy), Oryctodromeus, Cedar Mountain Formation
VolutPress
(01-05-2012
)
éligible au bon d'achat
ISBN-13:
978-613-8-78771-6
ISBN-10:
6138787714
EAN:
9786138787716
Langue du livre:
Anglais
texte du rabat:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Wayan Formation is a geological formation in Idaho whose strata date back to the earliest Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.The Wayan occurs in eastern Idaho. Sediments are dominantly floodplain mudstones (some pedogenic) with some fluvial sandstones and minor conglomerates, limestones, and tuffs. Carbonate nodules in pedogenic mudstones suggest a semi-arid, seasonal climate during deposition. Radiometric U-Pb dates from detrital zircons indicate an early to middle Cenomanian age.