Diversified Provenance of the Songpan-Ganzi Triassic Turbidites, Central China: Constraints from Geochemistry and Nd Isotopes

The Songpan-Ganzi Complex (SGC) in central China is one of the largest turbidite basins on Earth, but the origin of slates and sandstones is still open to debate. Petrographic, geochemical, and Nd isotope data for representative turbidites were collected, and the SGC was thus divided up into four main zones. The western and middle zones are characterized by easterly paleocurrents, abundant high-pressure (HP)-related dense minerals, and low...