TY - DATA
T1 - The XRF and Hm/Gt data from the IODP U1422 borehole in the Japan Sea
PY - 2025/05/20
AU - Zhixiang Wang
UR - 
DO - 10.4121/9a79133b-b763-4425-836c-9b14ea4a361c.v1
KW - XRF data
KW - hematite/goethite ratios
KW - Hole U1422
KW - climate change
KW - International Ocean Discovery Program
KW - X-ray fluorescence
N2 - <p>For this study, samples from the interval above 45.2 m (base of the Jaramillo subchron) in borehole U1422C were collected at 10 cm resolution. Based on the sedimentation rate of ~4.2 cm/kyr derived from the age model for the 0–45.2 m interval, this sampling interval corresponds to a temporal resolution of approximately 2.5 kyr. A total of 474 samples (10 cm sampling resolution) with approximately 10 g of each sample were ground into powder and passed through a 200-mesh sieve.The IODP U1422 samples were analyzed using a diffuse reflectance spectrophotometer capable of measuring reflectance across the near-ultraviolet (190–400 nm), visible (400–700 nm), and near-infrared (700–2500 nm) spectral ranges. In this study, the visible light band (400–700 nm) was selected as the focus area due to its sensitivity to iron oxide minerals. A TU1950 UV-VIS spectrophotometer was employed for the analysis of all 474 samples.</p>
ER -