Late Cretaceous Paleoclimate Data from the Nenjiang Formation, Songliao Basin

3.24 million years of floating astronomical time scale anchored by a volcanic ash age of 83.269 ± 0.044 Ma. This dataset contains cyclostratigraphic and paleoclimatic analysis results for the Late Cretaceous Nenjiang Formation in the Songliao Basin, NE China, generated by Yubin Guo. It includes gamma-ray logging data and palynological analysis used to identify sedimentary cycles and paleoclimatic characteristics.

Use Cases

• Modeling astronomical forcing on paleoclimate based on identified 405-kyr, 95-kyr, 38.3-kyr, and 22.8-kyr sedimentary cycles.
• Analyzing vegetation and humidity changes based on fossil spore and pollen data described in the study.
• Calibrating floating astronomical time scales for the Late Cretaceous Campanian stage based on the established 3.24-Myr framework.
• Investigating the relationship between obliquity cycles and regional paleoclimate dynamics based on palynofloral assemblage transitions.

Strengths

• Data is anchored by a precise volcanic ash age of 83.269 ± 0.044 Ma.
• Covers a 3.24-Myr floating astronomical time scale spanning approximately 83.33 to 80.00 Ma.
• Integrates high-resolution gamma-ray logging data with palynological data for paleoclimatic analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data focuses on a specific geological formation and time period, limiting generalizability.

Provenance

Source

Yubin Guo via figshare.

Collection Method

Cyclostratigraphic analysis of gamma-ray logging data and paleoclimatic analysis of palynological data.

Time Range

Late Cretaceous Campanian, approximately 83.33 to 80.00 Ma.

Freshness

Last updated 2026-05-28 06:22:23; freshness should be verified.

Geography

Gulong area, Songliao Basin, Northeast China.