Cretaceous Magnetic Fabric Data from the Jinmenguan Section, 128–64 Ma

515 anisotropy of magnetic susceptibility (AMS) measurements from a 724.1-meter stratigraphic section in the Western Sichuan foreland basin. The data, collected by Lifu Hou, spans an interval from approximately 128 to 64 million years ago, constrained by a published magnetostratigraphic age model. It underpins time-resolved analysis of magnetic fabrics and shortening directions in the Longmen Shan tectonic belt.

Use Cases

• Analyzing tectonic strain directions based on principal susceptibility axis orientations.
• Studying the evolution of magnetic fabric over time based on the 64-million-year stratigraphic record.
• Correlating tectonic shortening events with the high-resolution magnetostratigraphic age model.
• Investigating rock deformation in foreland basin settings using AMS scalar parameters.

Strengths

• 515 individual specimen measurements provide a substantial sample size.
• Ages are constrained by a high-resolution magnetostratigraphic age model (Hou et al., 2023).
• Samples cover a continuous 724.1-meter stratigraphic interval spanning approximately 64 million years.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is small in file size (130.6 KB), indicating limited scope beyond the core AMS measurements.

Provenance

Source

Lifu Hou via figshare.

Collection Method

Anisotropy of magnetic susceptibility (AMS) measurements on collected rock specimens.

Time Range

~128 to 64 million years ago (Cretaceous).

Freshness

Last updated 2026-06-01 03:54:47; freshness should be verified.

Geography

Jinmenguan section, Western Sichuan foreland basin, eastern margin of the Tibetan Plateau.