Assessing the Duration of the Paleocene-Eocene Thermal Maximum

被引：1
作者：
Piedrahita, Victor A. [1 ,2 ,3 ]
Heslop, David [4 ]
Roberts, Andrew P. [4 ]
Rohling, Eelco J. [5 ,6 ]
Galeotti, Simone [7 ,8 ]
Florindo, Fabio [8 ,9 ]
Li, Jinhua [1 ,2 ,3 ,10 ]
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Deep Petr Intelligent Explorat & Dev, Beijing, Peoples R China
[2] Qingdao Marine Sci & Technol Ctr, Lab Marine Geol, Qingdao, Peoples R China
[3] Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China
[4] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia
[5] Univ Utrecht, Dept Earth Sci, Utrecht, Netherlands
[6] Univ Southampton, Natl Oceanog Ctr, Sch Ocean & Earth Sci, Southampton, England
[7] Univ Urbino, Dipartimento Sci Pure & Applicate, Urbino, Italy
[8] Inst Climate Change Solut, Frontone, Pesaro E Urbino, Italy
[9] Ist Nazl Geofis & Vulcanol, Rome, Italy
[10] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
来源：
GEOPHYSICAL RESEARCH LETTERS | 2025年 / 52卷 / 07期
基金：
中国博士后科学基金; 澳大利亚研究理事会; 中国国家自然科学基金;
关键词：
Paleocene-Eocene Thermal Maximum (PETM); carbon isotope excursion (CIE); PETM CIE duration; CARBON SEQUESTRATION; CLIMATE-CHANGE; BIGHORN BASIN; RELEASE; CHRONOLOGY; EMISSIONS; FEEDBACK; SECTION; RECORD; SCALE;
D O I：
10.1029/2024GL113117
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
The Paleocene-Eocene Thermal Maximum (PETM) was a climate/carbon cycle perturbation recognized in stable carbon isotope (delta C-13) records with a negative carbon isotope excursion (CIE). The PETM CIE termination has been associated with a delta C-13 inflection with pre-PETM-like values referred to as the G point. However, the G point approach has produced variable PETM CIE duration estimates (similar to 120-230 kyr), which reflects a need to test its reliability. Here, we apply statistical analyses to existing delta C-13 records and reveal that the G point is sensitive to underlying delta C-13 uncertainties. We generate a probabilistic-based CIE detection limit, which constrains the time range over which the PETM is detected in delta C-13 records. This protocol reveals a protracted CIE recovery (>145 kyr) that accounts for a 268.8(+21.2)/(-20.5) kyr PETM CIE duration. Our new duration estimate exceeds previous values, which confirms the potential of extreme carbon cycle perturbations to cause long-lasting carbon cycle disruptions.
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页数：10
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