Investigations of the atmospheric fallout of 7Be and 210pb in many places around the globe indicate that there are seasonal variations on the alepositional fluxes of these nuclides: high in winter in a few places, while in most places the high occurs in spring. However, these earlier studies did not address quantitatively the corresponding seasonal variations of the amount of precipitation duri...

The Govanda Formation was deposited during the Early-Middle Miocene Epoch in intermountain areas between Zagros Suture and Imbricate zones. Paleoecology depositional environment of has been studied detail Mergasor Penjwen districts for first time. formation these two sections from bottom to top is comprised thick bedded, oyster chert bearing conglomerate, pebbly sandstone, red-brown shale silts...

Abstract Sections at Baghuk Mountain, 45 km NNW of Abadeh (Central Iran), have excellent exposures fossiliferous marine Late Permian to Early Triassic sedimentary successions. Detailed bed-by-bed sampling enables the analysis microfacies changes three successive rock units across Permian–Triassic boundary. The Hambast Formation is mainly result biogenic carbonate production. Its dominated by bi...