Infrared spectral data of peat and ash from Cruz do Bocelo mire, northwestern Spain

Antonio Martínez Cortizas, Lourdes López-Merino, Noemí Silva-Sánchez, Jenny K. Sjöström, Malin E. Kylander

The dataset contains standardized absorbance values of spectra for peat and ash samples, collected in the mid infrared (wavenumber 4000 – ⁠400 cm⁻¹) region using Fourier transform infrared spectroscopy - Attenuated total reflectance (FTIR-ATR).

The spectra enable the characterization of the molecular and mineral composition of peat and ash, and how they vary with depth. It also helps in establishing the chronology of changes in the mineral composition of the deposited dust and understanding the factors controlling these changes.

The samples were obtained from a core collected in 2007 at Cruz do Bocelo mire (NW Spain) and cover the last 2800 years.

Citation

Antonio Martínez Cortizas, Lourdes López-Merino, Noemí Silva-Sánchez, Jenny K. Sjöström, Malin E. Kylander (2021) Infrared spectral data of peat and ash from Cruz do Bocelo mire, northwestern Spain. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/martinez-cortizas-2021-bocelo-mire-1

References

Martínez Cortizas A, López-Merino L, Silva-Sánchez N, Sjöström JK, Kylander ME (2021) Investigating the mineral composition of peat combining FTIR-ATR and multivariate statistics. Minerals 11:1084. https://doi.org/10.3390/min11101084

Data description

The data are included in two csv files:

• Cruz_do_Bocelo_IR_peat_data.csv: Wavenumbers (WN) and standardized absorbances for peat samples (pB01 to pB69)
• Cruz_do_Bocelo_IR_ash_data.csv: Wavenumbers (WN) and standardized absorbances for ash samples (aB01 to aB70)

Data values are separated by semicolon.

The core was sliced into 2 cm slices, which are numbered from the top ( sample 1: 0 – ⁠2 cm) to the bottom (sample 70, 138 – ⁠140 cm). Samples codes start with "p" for peat and "a" for ash, followed by "B" (i.e., Bocelo) and the number in the sequence (01 to 70).