New chronology for the late Paleocene thermal maximum and its environmental implications

  title={New chronology for the late Paleocene thermal maximum and its environmental implications},
  author={Ursula R{\"o}hl and Timothy J. Bralower and Richard D. Norris and Gerold Wefer},
The late Paleocene thermal maximum (LPTM) is associated with a brief, but intense, interval of global warming and a massive perturbation of the global carbon cycle. We have developed a new orbital chronology for Ocean Drilling Program (ODP) Site 690 (Weddell Sea, Southern Ocean) by using spectral analysis of high-resolution geochemical records. The LPTM interval spans 11 precessional cycles yielding a duration of 210 to 220 k.y. The δ 13 C anomaly associated with the LPTM has a magnitude of… 
Global dinoflagellate event associated with the late Paleocene thermal maximum
The late Paleocene thermal maximum, or LPTM (ca. 55 Ma), represents a geologically brief time interval (∼220 k.y.) characterized by profound global warming and associated environmental change. The
Orbital climate forcing of δ13C excursions in the late Paleocene–early Eocene (chrons C24n–C25n)
[1] High-resolution stable carbon isotope records for upper Paleocene–lower Eocene sections at Ocean Drilling Program Sites 1051 and 690 and Deep Sea Drilling Project Sites 550 and 577 show numerous
Astronomical calibration of the Paleocene time
Rapid Acidification of the Ocean During the Paleocene-Eocene Thermal Maximum
Geochemical data from five new South Atlantic deep-sea sections indicate that a large mass of carbon dissolved in the ocean at the Paleocene-Eocene boundary and that permanent sequestration of this carbon occurred through silicate weathering feedback.
On the duration of the Paleocene‐Eocene thermal maximum (PETM)
The Paleocene‐Eocene thermal maximum (PETM) is one of the best known examples of a transient climate perturbation, associated with a brief, but intense, interval of global warming and a massive
Global change during the Paleocene-Eocene thermal maximum
  • A. Sluijs
  • Environmental Science, Geography
  • 2003
Proxy data indicate that atmospheric CO2 concentrations expected for the next centuries have not been equaled since the early Paleogene, approximately 66 to 45 Million years (Ma) ago. The early
Very large release of mostly volcanic carbon during the Paleocene-Eocene Thermal Maximum
Boron isotope data are presented that show that the ocean surface pH was persistently low during the PETM, and enhanced burial of organic matter seems to have been important in eventually sequestering the released carbon and accelerating the recovery of the Earth system.
Orbitally Paced Climate Variability During the Middle Miocene: High Resolution Benthic Foraminiferal Stable‐Isotope Records From the Tropical Western Pacific
We generated a high resolution (∼8 ky) benthic record from a West Pacific marginal basin to investigate the detailed structure and spectral characteristics of deep water isotope fluctuations during
High-resolution carbon isotope record for the Paleocene-Eocene thermal maximum from the Nanyang Basin, Central China
The Paleocene-Eocene thermal maximum (PETM) was a transient episode of global warming, associated with massive atmospheric greenhouse gas input that occurred at the Paleocene/Eocene boundary.


Abrupt Climate Change and Transient Climates during the Paleogene: A Marine Perspective
It is investigated the possibility that sudden reorganizations in ocean and/or atmosphere circulation during these abrupt transitions generated short-term positive feedbacks that briefly sustained these transient climatic states.
Carbon cycling and chronology of climate warming during the Palaeocene/Eocene transition
Current models of the global carbon cycle lack natural mechanisms to explain known large, transient shifts in past records of the stable carbon-isotope ratio (δ13C) of carbon reservoirs. The
Dissociation of oceanic methane hydrate as a cause of the carbon isotope excursion at the end of the Paleocene
Isotopic records across the “Latest Paleocene Thermal Maximum“ (LPTM) indicate that bottom water temperature increased by more than 4°C during a brief time interval (<104 years) of the latest
Antarctic subtropical humid episode at the Paleocene-Eocene boundary: Clay-mineral evidence
Clay-mineral assemblages from East Antarctica have been analyzed at high stratigraphic resolution (20 to 1 ka) throughout the interval from 55.6 to 55.0 Ma, which includes the terminal Paleocene
New evidence for subtropical warming during the Late Paleocene thermal maximum: Stable isotopes from Deep Sea Drilling Project Site 527, Walvis Ridge
The late Paleocene thermal maximum (LPTM) was a dramatic, short-term global warming event that occurred ∼55 Ma. Warming of high-latitude surface waters and global deep waters during the LPTM has been
The Source and Fate of Massive Carbon Input During the Latest Paleocene Thermal Maximum.
The deposition of a mud clast interval and seismic evidence for slope disturbance provide evidence to confirm the gas hydrate dissociation hypothesis and identify the Blake Nose as a site of methane release.
A blast of gas in the latest Paleocene: simulating first-order effects of massive dissociation of oceanic methane hydrate.
Significant CH4 release from oceanic hydrates is a plausible explanation for observed carbon cycle perturbations during the thermal maximum because the flux of CH4 invoked during the maximum is of similar magnitude to that released to the atmosphere from present-day anthropogenic CH4 sources.
High-resolution records of the late Paleocene thermal maximum and circum-Caribbean volcanism: is there a causal link?
Two recently drilled Caribbean sites contain expanded sedimentary records of the late Paleocene thermal maximum, a dramatic global warming event that occurred at ca. 55 Ma. The records document
Mechanisms of climate warming at the end of the paleocene
Oxygen and carbon isotope records from two widely separated sites support the notion that degassing of biogenic methane hydrate may have been an important factor in altering Earth's climate.
Correlation between isotope records in marine and continental carbon reservoirs near the Palaeocene/Eocene boundary
CHANGES in the isotope content of the large marine carbon reservoir can force shifts in that of the smaller carbon pools in the atmosphere and on land. The carbon isotope compositions of marine