Linking Tectonics and Cratonic Vertical Motions: Deep-Time Thermochronology Reveals >1000 Myrs of Low-Temperature Conditions in Southeastern Finland Data

Key Points

• The aim is to investigate the relationship between tectonics and cratonic vertical motions over geological time scales using thermochronology.
• Acquisition of (U-Th)/He dates in zircon
• Acquisition of (U-Th-Sm)/He dates in apatite
• Utilization of past apatite fission track data
• Application of Ar-Ar modelling
• Analysis conducted using Thermochron.jl software for data inversion.
• New (U-Th)/He and (U-Th-Sm)/He dates indicate prolonged low-temperature conditions
• Evidence suggests significant tectonic processes over 1000 million years in southeastern Finland.
• Model outputs support hypotheses regarding cratonic stability and vertical motions.

Abstract