Han+2023-MORB data
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-03-24 |
| Journal | Zenodo (CERN European Organization for Nuclear Research) |
| Authors | Fei Han |
| Institutions | China University of Geosciences |
Abstract
Section titled âAbstractâThis zip file contains data presented in the submission âMarine magnetic anomalies enhanced by internal stress in rapidly cooled submarine lavasâ by Han et al., 2023. 1. Folder âFigure04 DATAâ has one spreadsheet that contains all data plotted in Figure 4a-d. 2. Folder âRockmagnetismâ contains five subfolders. (1) Subfolder âFORC_DATAâ contains the FORC data of NF7 samples. We conducted FORC measurements with a field increment of 1 mT and a saturation field of 2.0 T using a Lake Shore vibrating sample magnetometer (VSM 8600) at China University of Geosciences (Wuhan). (2) Subfolder âIRM+DCD_DATAâ contains an Excel spreadsheet that shows the isothermal remanent magnetisation (IRM) acquisition data and backfield direct-current demagnetisation (DCD) data with a saturation field of 2.0 T. These data were obtained using a Lake Shore vibrating sample magnetometer (VSM 8600) at China University of Geosciences (Wuhan). (3) Subfolder âhigh-saturation hys_DATAâ contains the high-saturation-field (14.0 T) hysteresis loop data [applied field (mT), Magnetization (Am2)]. These experiments were conducted using a Quantum Design physical property measurement system (PPMS) at Wuhan National High Magnetic Field Center. Samples were cut into 2.5 mm2.5 mm3.0 mm in size using diamond wire with 0.35 mm diameter for the high-saturation-field measurements. The sweep rate was set to 3 mT/sec for applied fields in the [-2 T, 2 T] range, and 5 mT/sec for applied fields in the [-14 T, -2 T] and [2 T, 14 T] range. (4) Subfolder âlow-saturation hys_DATAâ contains the low-saturation-field (1.0 T and 2.0 T) hysteresis loop data [applied field (mT), Magnetization (Am2)] obtained using a Lake Shore vibrating sample magnetometer (VSM 8600) at China University of Geosciences (Wuhan). (5) Subfolder âlow-temperature TFT_DATAâ contains the low-temperature backfield direct-current demagnetisation (DCD) data of NF7a1a and NF7b2a for thermal fluctuation tomography (TFT) modelling. We conducted these measurements using a Princeton Measurements Corporation vibrating sample magnetometer equipped with a low-temperature cryostat (LT-VSM) at the Institute for Rock Magnetism at the University of Minnesota. We measured backfield demagnetisation curves at logarithmic increments from 2 mT to 1200 mT from 10 K to 300 K at 10 K 3. Folder âMicroMagâ contains two subfolders and a MATLAB script. (1) Subfolder âMicroMag_Modelsâ contains the MERRILL scripts and Patran geometries to reproduce the results. (2) Subfolder âMicroMag_Resultsâ contains csv files to reproduce the results in Fig 5a,b. Each File name contains composition, grain size and stress magnitude.<br> The header format of each csv file is:<br> # - The model index number<br> Sx - The x-component of the unit vector describing the stress axis<br> Sy - The y-component of the unit vector describing the stress axis<br> Sz - The z-component of the unit vector describing the stress axis<br> <Mx> (Am^2) - The x-component of the net magnetic moment<br> <My> (Am^2) - The y-component of the net magnetic moment<br> <Mz> (Am^2) - The z-component of the net magnetic moment<br> Ms (A/m) - The saturation magnetization<br> Volume (m^3) - The volume of the modelled particle (3) Shrinkage_Model.m is a MATLAB script to reproduce the results in Extended Data Fig. 8.