Dataset title: Scanning X-ray fluorescence (XRF) for SPR0901-03KC

Dataset contact: Ingrid L. Hendy

Data citation: Hendy, I.L., Wang, Y. (2019). Scanning X-ray fluorescence (XRF) for SPR0901-03KC [Data set]. University of Michigan Deep Blue Data Repository. https://doi.org/10.7302/6dp2-3767

Latitude: 34.2832°N
Longitude: 120.0401°W
Water depth:586 m
Core retrieval Date:2009.1
Core type: Kasten core
Research Vessel: R/V Sproul


Overview: This dataset includes scanning X-ray fluorescence (XRF) data for the core SPR0901-03KC.

Methods: SPR0901-03KC contains two cores (core 1 and core 2), with each core cut into two sections. Three core sections were scanned and the 'core 1, sec 1' is used to recover the age gap between the two sections for core 2. The cores were scanned at 200-µm resolution on an ITRAX X-ray fluorescence (XRF) core scanner (Cox Analytical Instruments) at the Large Lakes Observatory, University of Minnesota, Duluth in 2010. The scanner is equipped with a Cr X-ray tube, and operated with an 8-second scan time at 30 kV and 15 mA.

Files contained:
'SPR0901-03KC core1 sec1.csv': Scanning XRF data for core 1, section 1;
'SPR0901-03KC core2 sec1.csv': Scanning XRF data for core 2, section 1;
'SPR0901-03KC core2 sec2.csv': Scanning XRF data for core 2, section 2;

Variables:

Position(mm): Scanning XRF sample depth;
sample surface: Height above the D-shaped core bottom;
validity: 1 if pass the quality check;
E-gain, E-offset, F-slope, F-offset: Adjustments to energy-channel relationship during spectral analysis of raw XRF spectra;
kcps (kilo counts per second): Total photon counts per second;
MSE: Mean square error in the peak fitting;
Al: Aluminum peak area;
Si: Silicon peak area;
S: Sulfur peak area;
Cl: Chlorine peak area;
Ar: Argon peak area;
K: Potassium peak area;
Ca: Calcium peak area;
Ti: Titanium peak area;
inc: Cr (Chromium X-ray tube) incoherent scattering;
coh: Cr (Chromium X-ray tube) coherent scattering;