Data analysis of the U–Pb geochronology and Lu–Hf system in zircon and whole-rock Sr, Sm–Nd and Pb isotopic systems for the granitoids of Thailand

Abstract

This data article provides zircon U–Pb and Lu–Hf isotopic information along with whole-rock Sm–Nd, Sr and Pb isotopic geochemistry from granitoids in Thailand. The U–Pb ages are described and the classification of crystallisation and inherited ages are explained. The petrography of the granitoid samples is detailed. The data presented in this article are interpreted and discussed in the research article entitled “Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids” (Dew et al., 2018).

Probing into Thailand’s basement: New insights from U–Pb geochronology, Sr, Sm–Nd, Pb and Lu–Hf isotopic systems from granitoids

“…The individual sample locations and lithology and analysis method for each sample are outlined in Table 1. For further details on the sample preparation and petrographic descriptions see Dew et al (2018b).…”

“…Eighteen granitoid rock samples were used for zircon analyses. Details of the preparatory methods and analytical conditions are summarized by Dew et al (2018b). All cathodoluminescence (CL) imagery and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was completed at Adelaide Microscopy, Adelaide, South Australia.…”

“…Across all analytical sessions, analyses of GJ-1 yielded a 206 Pb/ 238 U weighted average age of 601.61 ± 0.47 Ma (n=556,MSWD=1.10). For further information on the zircon standards, analytical parameters and reduction techniques, see Dew et al (2018b).…”

“…Hafnium analysis for one sample (KM-20) was undertaken using a Neptune Plus multicollector ICP-MS at the University of Wollongong, New South Wales. For further information on standards, analytical parameters, correction and reduction techniques, see Dew et al (2018b).…”

“…Outliers were rejected after subsequent examination, if the laser beam traversed cracks or overlapped with multiple zircon domains within the grain. For further information on the U-Pb LA-ICP-MS data see Dew et al (2018b).…”