Dataset for the Unraveling the Tectono-Thermal History of the Inthanon Zone: Insights into the Magmatic-Metamorphic Evolution and Sn-W Ore Formation

Description:

This repository contains the comprehensive supplementary dataset—comprising mineral chemistry, whole-rock geochemistry, and geochronological isotopes—compiled for a Doctoral Thesis investigating the Inthanon Zone of northern Thailand. The Inthanon Zone preserves a vital record of the tectonic and metallogenic evolution of Southeast Asia spanning approximately 200 million years. To reconstruct this complex geological history, this study utilizes an integrated approach combining U-Pb zircon and monazite geochronology with phase equilibria modelling. While zircon provides a precise timeline for major magmatic crystallization at ~210 Ma and ~80–65 Ma, internal zoning within monazite crystals reveals a continuous sequence of overlapping metamorphic and magmatic pulses persisting from ~200 Ma to ~20 Ma. Synthesizing these chronologies with thermodynamic modelling successfully decouples these events to reconstruct the region's tectono-thermal evolution.

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Data Structure and Content

Chapter 1: Unraveling the polyphase tectono-thermal history of the Inthanon Core Complex, Thailand: Insights into Southeast Asia’s multistage assembly

Supplementary Table S1: Mineral analyses from the Western Domain by Electron Probe Micro-Analyzer (EPMA).
Supplementary Table S2: Mineral analyses from the Eastern Domain by EPMA.
Supplementary Table S3: Mineral analyses of granite by EPMA.
Supplementary Table S4: Whole-rock geochemical analyses of metamorphic rocks and granites.
Supplementary Table S5: Zircon and monazite U-Pb analyses by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS).
Supplementary Figure S1: Geochronological concordia and age results for granitic samples.

Chapter 2: Deciphering multiple orogenic phases with the reactive help of monazite (Inthanon Core Complex, N Thailand)

Supplementary Table S1: Analytical conditions and results of monazite analysis by EPMA.
Supplementary Table S2: Analytical conditions and results of monazite analysis by LA-ICP-MS.
Supplementary Table S3: Instrument conditions for monazite elemental mapping by Laser Ablation Inductively Coupled Plasma Time-of-Flight Mass Spectrometry (LA-ICP-TOF-MS).

Chapter 3: Temporal and Paragenetic Evolution of the Samoeng Sn-W Magmatic-Hydrothermal Sys-tem, Inthanon Zone, Northern Thailand

Supplementary Table S1: Mineral analyses from granite by EPMA and LA-ICP-MS.
Supplementary Table S2: Mineral analyses from the Skarn Zone by EPMA and LA-ICP-MS.
Supplementary Table S3: Mineral analyses from the Hydrothermal Alteration Zone by EPMA and LA-ICP-MS.
Supplementary Table S4: Mineral analyses from the Calc-Silicate Zone by EPMA and LA-ICP-MS.
Supplementary Table S5: Mineral analyses from the Marble Zone by EPMA.
Supplementary Table S6: Zircon and monazite geochronological analyses by LA-ICP-MS.

Keywords: Inthanon Zone, Thailand, Geochronology, Monazite, Zircon, Phase Equilibria Modelling, Skarn Mineralization, EPMA, LA-ICP-MS

Supplementary material for doctoral Thesis: Unraveling the Tectono-Thermal History of the Inthanon Zone: Insights into the Magmatic-Metamorphic Evolution and Sn-W Ore Formation by Srett Santitharangkun.