Middle Miocene-Pleistocene Magneto-Cyclostratigraphy from IODP Site U1501 in the Northern South China Sea

Site U1501 of International Ocean Discovery Program (IODP) Expedition 368 locates on a broad regional basement high in the northern margin South China Sea (SCS). This study refines chronostratigraphy upper 160 m sedimentary succession from Hole U1501C using paleomagnetic measurements and cyclostratigraphic analysis Natural Gamma Radiation (NGR) data. Rock magnetic displays that signal sediments is mainly carried by single-domain (SD) multi-domain (MD) magnetite. A total 12 geomagnetic reversals are identified correlated to polarity time scale (GPTS) Geologic Time Scale 2020 (GTS 2020), combining biostratigraphic data planktonic foraminiferal oxygen records. The Milankovitch cycles 405-kyr long orbital eccentricity, ∼100-kyr short obliquity NGR profile. 15.54 Myr astronomical constructed tuning eccentricity filtered profiles La2010 solution with constraints magnetostratigraphic results, age datum new high-resolution model provides temporal constraint tectonic paleoenvironmental evolution Sea.