Compiled geochemical, igneous rock age, and detrital zircon dataset for Northeast Asia (100 Ma–present)

This dataset is a comprehensive compilation of igneous rock geochemistry, igneous rock ages, and detrital zircon U–Pb age data from Northeast Asia spanning approximately 100 Ma to the present. The dataset integrates multiple published sources and is organized into four components: (1) whole-rock geochemical data (WR_chemistry), including major elements, trace elements, and Nd–Sr isotopic parameters; (2) igneous rock age data (Igneous_rock_age), including sample information, analytical methods, and associated uncertainties; (3) detrital zircon U–Pb age data (Detrital_zircon_age), including single-grain ages, isotopic ratios, and discordance metrics; and (4) a References table linking all entries to their original literature sources with full citation metadata and DOIs. All datasets have been standardized and harmonized in terms of units, format, and nomenclature. Derived parameters (e.g., εNd(t)) are included where applicable. This integrated dataset is designed to support regional-scale analyses of magmatic evolution, sediment provenance, and tectonic processes associated with subduction and continental margin development in East Asia.