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Magnetic susceptibility during last 80kyr (140kyr) in Ili Basin (Chaona section), China
CTR :525
Key words Frequency-dependent susceptibility, Mass magnetic susceptibility, Ili Basin, China Loess Plateau
Relevant data Song, Y.G., Z.T. Shi, X.M. Fang, J.S. Nie, N. Ishikawa, X.K. Qiang, and X.L. Wang. 2010. Loess magnetic properties in the Ili Basin and their correlation with the Chinese Loess Plateau. China Science: Earth Sciences, Vol. 53(3), pp. 419-431. DOI: 10.1007/s11430-010-0011-5
Data shows that
The authors measured the mass magnetic susceptibility (χ) and anhysteretic remanent magnetization (ARM) at the Paleomagnetism Laboratory of the Institute of Earth Environment (IEE), Chinese Academy of Sciences (CAS). Magnetic susceptibility was measured with a Bartington MS2 meter at frequencies of 470 Hz (i.e., χlf) and 4700 Hz (i.e., χhf). From these measurements, the absolute frequency dependence of susceptibility χfd (defined as χlf−χhf) and frequency dependent susceptibility χfd% (defined as (χlf−χhf)/χlf×100%) were calculated. χfd and χfd% represent the absolute and relative behavior of frequency-dependent susceptibility, respectively. ARM was imparted using a 100 mT peak alternating field with a superimposed 0.05 mT direct bias field. ARM was then normalized by the bias filed to obtain ARM susceptibility (χARM). The authors measured hysteresis parameters (including saturation magnetization (Ms), remanent saturation magnetization (Mr), coercivity (Bc), and Remanent coercivity (Bcr)) by using a Princeton Measurements MicroMag 2900-02C alternating gradient force magnetometer at the Paleomagnetism and Rock Magnetism Laboratory of Kyoto University. Temperature-dependent susceptibility (TDS) was measured continuously from room temperature up to 700°C and back down to room temperature using a KLY-3 Kappabridge with CS3 high temperature device in the Fort Hoofddijk Paleomagnetism Laboratory of Utrecht University of the Netherlands. The powdered whole-rock samples were heated and cooled in an argon atmosphere to prevent possible oxidation. XRD analyses were carried out on a PANalytical X’pert Pro X-ray diffractometer (PW3071) with Cu-Kα radiation in the Environmental Mineralogy Laboratory of IEE, CAS. The XRD was measured using a step size of 0.02° 2θ and a scan speed of 2° 2θ/min from 5° 2θ to 60° 2θ on air-dried samples.
Data collection format Excel
Data classification Geological record - Terrestrial environmental records
Data source
World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program
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