Zircon U-Pb ages and Lu-Hf isotope compositions from clastic rocks in the Hutuo Group: Further constraints on Paleoproterozoic tectonic evolution of the Trans-North China Orogen

摘要

Highlights?Zircons from a sandstone in lower sequence of the Hutuo Group yielded a youngest age of 2140Ma.?The Provenance of the clastic rocks was mainly from the late Archean basements and 2.2–2.0Ga intrusives in Central TNCO.?The Doucun and Dongye Subgroups formed from 2.2Ga to 2.0Ga in rift-related environment.?The Guojiazhai Subgroup deposited during the closure of the rifting-related basin in 1.9–1.8Ga.?2.6–2.9Ga represents intensive crustal growth in Central TNCO.AbstractThe Hutuo Group, as one of the classic examples of Paleoproterozoic strata, plays an important role in establishing evolutionary processes in the Trans-North China Craton. In this contribution, we present petrologic, detrital zircon U-Pb ages and Lu-Hf isotopes from three subgroups of the Hutuo Group. Sandstones in the Doucun and Dongye S