Geological Map and Palaeontological Data from the Shiliin Nuruu Syncline, Mongolia

A 1:75,000 scale geological map details Upper Mesozoic sedimentary formations in the Shiliin Nuruu Syncline, Western Mongolia. The sequence reaches up to 1000 meters thick and contains a rich Hauterivian–Aptian fossil assemblage. The dataset was created by Pavel Hanžl and last updated in May 2026.

Use Cases

• Stratigraphic correlation and basin analysis based on described lateral and vertical transitions of formations.
• Palaeoenvironmental reconstruction based on sedimentological descriptions of alluvial fan to lacustrine deposits.
• Palaeoclimatic inference based on described relics of terrestrial plants indicating a warm climate.
• Comparative palaeobiological studies based on the described fossil association, potentially linking it to the Jehol Biota.

Strengths

• Includes a detailed geological map at a scale of 1:75,000.
• Describes a fossil assemblage containing conchostracans, insect larvae, gastropods, bivalves, and fish.
• Documents a sedimentary sequence with a total thickness of up to 1000 meters.

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 the specific syncline studied.

Provenance

Source

figshare

Collection Method

Field-based geological mapping and palaeontological analysis.

Time Range

Upper Jurassic to Lower Cretaceous.

Freshness

Last updated 2026-05-12 14:18:17; freshness should be verified.

Geography

Shiliin Nuruu Syncline, Valley of Lakes, Gobi Altai, Western Mongolia.