Indian Ocean Magnetic Anomaly Picks for Tectonic Reconstructions

Indian Ocean magnetic anomaly and fracture zone picks used to calculate Euler rotations for tectonic plate motions. The dataset contains picks for 14 time intervals on the Southwest Indian Ridge and 17 on the Southeast Indian Ridge, organized by plates and segments. It was created by SCIOPS for the research published by Cande and Patriat in 2015.

Use Cases

• Calculate Euler rotations for the Antarctic, Indian, and African plates using latitude, longitude, and uncertainty estimate data.
• Model relative plate velocities between India and Africa during specified chrons using the organized plate and segment picks.
• Validate tectonic reconstruction software like 'Hellinger' programs with the provided input and output format data.
• Analyze fracture zone geometry and spreading history from the spatially referenced anomaly picks across the Indian Ocean ridges.

Strengths

• Picks provided for 31 distinct time intervals across two major ridge systems.
• Data includes uncertainty estimates for each pick, supporting error analysis.
• Covers three major tectonic plates: Antarctica, India, and Africa.

Limitations

• The exact number of individual data points (rows) is unknown.
• Temporal coverage is specific to chrons 34y to 20o, limiting applicability to other time periods.
• Data format is tied to specific legacy software ('Hellinger' programs).

Provenance

Source

SCIOPS, referenced in Cande and Patriat (2015) publication.

Collection Method

Magnetic anomaly and fracture zone picks derived from geophysical surveys.

Time Range

Late Cretaceous to early Cenozoic (chrons 34y to 20o).

Freshness

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Geography

Indian Ocean, focusing on the Southwest and Southeast Indian Ridges.