Data for Article "Nonnegligible contribution of terrigenous inputs from local small watersheds to marine sediments: evidence from magnetic investigation for surface sediments at west regions of the Pearl River Estuary"

Description

This dataset includes environmental magnetic properties of sediments collected from rivers within west Guangdong, Coastal zone, and shelf, and rock magnetic measurement (k-T curve, Hysteresis loop, IRM Acquisition Curve, and Demagnetization Curve) results for representative samples.

Steps to reproduce

Low field magnetic susceptibility (MS) was measured under field 200 A/m at both low (976 Hz) and high (15616 Hz) (mass-specific χlf and χhf, respectively) frequency using a Kappabridge MFK1-FA (AGICO). Anhysteretic remanent magnetization (ARM) was imparted with an AF peak field of 100 mT and a DC biasing field of 0.05 mT using a D-2000 A.F. Demagnetizer and then measured on a JR-6A Spinner Magnetometer. Isothermal remanent magnetization (IRM) acquired at 2 T field using an IM-10-30 Impulse magnetizer and then measured with a JR-6A Spinner Magnetometer was regarded as saturation IRM (SIRM). κ-T curves were measured using a CS4 high temperature unit attached to the Kappabridge MFK1-FA in an argon atmosphere from ambient temperature to 700 °C. Hysteresis loops and parameters were measured with a maximum applied field of 1.5 T. IRM acquisition curves with ninety steps up to 1500 mT were acquired. Then, backfield demagnetization curves ranged from 0 to -1500 mT were measured. First order reversed curves (FORCS) were measured with the maximum applied fields of 1 T

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