Stable Isotope and Chemical Data for Rabaul Caldera Thermal Waters and Fumaroles

Geochemical data for thermal waters and fumarolic exhalations from the Rabaul caldera in Papua New Guinea. The dataset includes stable isotope (D/H and O18/O16) ratios, anion ratios, and trace metal contents (Fe, Mn, Zn) used to investigate water origins. It was published by Geoscience Australia and last updated on 2026-04-30.

Use Cases

• Modeling the mixing of meteoric and marine water sources based on stable isotope ratios.
• Investigating the leaching potential of geothermal fluids using trace metal (Fe, Mn, Zn) concentrations.
• Comparing geochemical interpretations of water origin between stable isotope and anion/trace metal data.

Strengths

• Includes stable isotope (D/H and O18/O16) ratios for distinct geographic areas.
• Contains trace metal data (Fe, Mn, Zn) linked to specific geothermal springs.
• Data is associated with a specific, well-known volcanic caldera (Rabaul).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au.

Provenance

Source

Geoscience Australia Data

Collection Method

Chemical and isotopic analysis of water and gas samples.

Freshness

Last updated 2026-04-30 13:59:16.826325; freshness should be verified.

Geography

Rabaul caldera, New Britain, Papua New Guinea (specifically Matupi Harbour, Sulphur Creek, Tavurvur, and Rabalankaia volcanoes).