Geochemical Evidence For Oceanic Volcanism In The Lachlan Fold Belt

Geochemical data from the Narragudgil Volcanics sequence in the Wyalong area of New South Wales, Australia, indicate an oceanic mid-ocean ridge or back-arc basin origin. The data, hosted by the Australian Ocean Data Network, was last updated in April 2026.

Use Cases

• Classify tectonic setting (MORB vs. BAB) using geochemical element ratios from volcanic rock samples.
• Correlate magnetic anomaly signatures between the Narragudgil and Gidginbung Volcanics to map subsurface geology.
• Assess the potential for Temora-style gold mineralization by analyzing the association with specific volcanic rock packages.
• Reconstruct Ordovician paleo-environments by interpreting geochemical indicators of an oceanic setting.

Strengths

• Data provides specific geochemical evidence for an Ordovician oceanic volcanic setting.
• Links volcanic units to a known gold-hosting sequence (Gidginbung Volcanics) with complex magnetic signatures.

Limitations

• The primary data format is PDF/HTML, which may require manual extraction for quantitative analysis.
• Sample size, geographic extent, and specific analytical methods are not detailed in the provided description.

Provenance

Source

Australian Ocean Data Network.

Collection Method

Geochemical analysis of volcanic rock samples.

Time Range

Ordovician period.

Freshness

null

Geography

Wyalong area, New South Wales, Australia, within the Lachlan Fold Belt.