Presentation Details
Preliminary glycerol dialkyl glycerol tetraethers results on the Norwegian Sea during PETM (Hole 1570D)
ID：611
View Protection：ATTENDEE
Updated Time：2024-10-12 16:13:29 Hits：763
Poster Presentation
Start Time：2025-01-16 19:20（Asia/Shanghai）
Duration：15min
Session：S66 Session 66-Biomarkers in the Sea: The Tracers of Key Biogeochemical Processes in the Ocean's Past, Present and Future »
No files
Abstract
The ocean is an important reservoir of carbon, and the increase of carbon dioxide leads to ocean acidification. The Paleocene-Eocene Thermal Maximum (PETM, ~56Ma) is a typical example of abrupt climate change, increased carbon release, and ocean acidification. We report branched glycerol dialkyl glycerol tetraethers (brGDGTs) data from IOPD 396’ s Hole 1570D/1569A in the Norwegian Sea of the North Atlantic, located within the Northeast Atlantic Igneous Province, where early volcanic activity was one of the triggers for the PETM. Our results show that brGDGTs in 1570D are major terrigenous input. Meanwhile, The increase of brGDGTs and isoGDGT concentration, the reduced branched/isoprenoid tetraether (BIT) and ∑IIIa/∑IIa shows marine in situ GDGTs input during PETM, and the MBT'5ME-MAT inconsistent with MAT of Arctic continents, but the trend of MBT'5ME-T consistent with those of thermocline water temperature(TWT) and bottom water temperature (BWT), this raises the question of whether the MT indicates seawater temperature. The CBT'5me-ring increases while the MI decreases during the PETM, which still requires more data for further explanation. However, the data of GDGTs from 1569A and n-alkanes with compound-specific isotope from 1570D will come up soon, more work is needed to refine and interpret this interesting phenomenon.
Keywords
BrGDGTs,pH,PETM,Biomaker
Speaker
Xinyi Chen
Master Sun Yat Sen UniversitySubmission Author
All Comments
Important Date
-
Conference Date
Jan 13
2025
toJan 17
2025
-
Sep 27 2024
Draft paper submission deadline
-
Feb 17 2025
Registration deadline
Sponsored By
State Key Laboratory of Marine Environmental Science, Xiamen University
Organized By
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
Department of Earth Sciences, National Natural Science Foundation of China
Contact Information
- Kejing GU
- xm******@xmu.edu.cn
- +86*********
Submit Comment