Paleosol-based paleoclimate reconstruction of the Paleocene-Eocene Thermal Maximum, northern Argentina

Elizabeth Andrews, Timothy White, Cecilia del Papa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The Paleocene-Eocene Thermal Maximum (PETM) is a well-documented, relatively short-lived, warm episode in Earth history. Previous studies completed on marine and continental strata spanning the PETM have focused on understanding the magnitude of warming and other atmospheric changes. These studies, completed largely in the Northern Hemisphere, report warming that ranged from 4 to 8 °C above mean annual paleotemperatures prior to warming. In this study, paleosols in the Salta Basin, northern Argentina, are used to reconstruct paleoprecipitation rates and mean annual paleotemperatures of the Southern Hemisphere from before, during and after the PETM. Carbon isotope data are used to: 1) identify the horizon in which the PETM and other Eocene hyperthermals are recorded; and, 2) to interpret perturbations of the global carbon cycle during the PETM. At the height of the PETM, paleoprecipitation proxies indicate ~ 1500 mm of annual rainfall and a temperature increase of ~ 5 °C from pre-PETM values. Carbon isotope data records three negative carbon isotope excursions during the PETM in this region, suggesting the possibility of three distinct, rapid releases of isotopically depleted carbon into the ocean-atmosphere system. The results presented here are one of only a few paleoclimate reconstructions from continental sediments spanning the PETM in the Southern Hemisphere.

Original languageEnglish (US)
Pages (from-to)181-195
Number of pages15
JournalPalaeogeography, Palaeoclimatology, Palaeoecology
Volume471
DOIs
StatePublished - Apr 1 2017

Fingerprint

Hypsithermal
paleosol
paleoclimate
Paleocene
Eocene
Argentina
heat
isotopes
carbon isotope
carbon
warming
paleotemperature
Southern Hemisphere
atmosphere-ocean system
carbon cycle
oceans
Northern Hemisphere
basins
rain
perturbation

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes
  • Palaeontology

Cite this

@article{28b45422a2f3476fb2239aac6964838f,
title = "Paleosol-based paleoclimate reconstruction of the Paleocene-Eocene Thermal Maximum, northern Argentina",
abstract = "The Paleocene-Eocene Thermal Maximum (PETM) is a well-documented, relatively short-lived, warm episode in Earth history. Previous studies completed on marine and continental strata spanning the PETM have focused on understanding the magnitude of warming and other atmospheric changes. These studies, completed largely in the Northern Hemisphere, report warming that ranged from 4 to 8 °C above mean annual paleotemperatures prior to warming. In this study, paleosols in the Salta Basin, northern Argentina, are used to reconstruct paleoprecipitation rates and mean annual paleotemperatures of the Southern Hemisphere from before, during and after the PETM. Carbon isotope data are used to: 1) identify the horizon in which the PETM and other Eocene hyperthermals are recorded; and, 2) to interpret perturbations of the global carbon cycle during the PETM. At the height of the PETM, paleoprecipitation proxies indicate ~ 1500 mm of annual rainfall and a temperature increase of ~ 5 °C from pre-PETM values. Carbon isotope data records three negative carbon isotope excursions during the PETM in this region, suggesting the possibility of three distinct, rapid releases of isotopically depleted carbon into the ocean-atmosphere system. The results presented here are one of only a few paleoclimate reconstructions from continental sediments spanning the PETM in the Southern Hemisphere.",
author = "Elizabeth Andrews and Timothy White and {del Papa}, Cecilia",
year = "2017",
month = "4",
day = "1",
doi = "10.1016/j.palaeo.2017.01.042",
language = "English (US)",
volume = "471",
pages = "181--195",
journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",
issn = "0031-0182",
publisher = "Elsevier",

}

Paleosol-based paleoclimate reconstruction of the Paleocene-Eocene Thermal Maximum, northern Argentina. / Andrews, Elizabeth; White, Timothy; del Papa, Cecilia.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 471, 01.04.2017, p. 181-195.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Paleosol-based paleoclimate reconstruction of the Paleocene-Eocene Thermal Maximum, northern Argentina

AU - Andrews, Elizabeth

AU - White, Timothy

AU - del Papa, Cecilia

PY - 2017/4/1

Y1 - 2017/4/1

N2 - The Paleocene-Eocene Thermal Maximum (PETM) is a well-documented, relatively short-lived, warm episode in Earth history. Previous studies completed on marine and continental strata spanning the PETM have focused on understanding the magnitude of warming and other atmospheric changes. These studies, completed largely in the Northern Hemisphere, report warming that ranged from 4 to 8 °C above mean annual paleotemperatures prior to warming. In this study, paleosols in the Salta Basin, northern Argentina, are used to reconstruct paleoprecipitation rates and mean annual paleotemperatures of the Southern Hemisphere from before, during and after the PETM. Carbon isotope data are used to: 1) identify the horizon in which the PETM and other Eocene hyperthermals are recorded; and, 2) to interpret perturbations of the global carbon cycle during the PETM. At the height of the PETM, paleoprecipitation proxies indicate ~ 1500 mm of annual rainfall and a temperature increase of ~ 5 °C from pre-PETM values. Carbon isotope data records three negative carbon isotope excursions during the PETM in this region, suggesting the possibility of three distinct, rapid releases of isotopically depleted carbon into the ocean-atmosphere system. The results presented here are one of only a few paleoclimate reconstructions from continental sediments spanning the PETM in the Southern Hemisphere.

AB - The Paleocene-Eocene Thermal Maximum (PETM) is a well-documented, relatively short-lived, warm episode in Earth history. Previous studies completed on marine and continental strata spanning the PETM have focused on understanding the magnitude of warming and other atmospheric changes. These studies, completed largely in the Northern Hemisphere, report warming that ranged from 4 to 8 °C above mean annual paleotemperatures prior to warming. In this study, paleosols in the Salta Basin, northern Argentina, are used to reconstruct paleoprecipitation rates and mean annual paleotemperatures of the Southern Hemisphere from before, during and after the PETM. Carbon isotope data are used to: 1) identify the horizon in which the PETM and other Eocene hyperthermals are recorded; and, 2) to interpret perturbations of the global carbon cycle during the PETM. At the height of the PETM, paleoprecipitation proxies indicate ~ 1500 mm of annual rainfall and a temperature increase of ~ 5 °C from pre-PETM values. Carbon isotope data records three negative carbon isotope excursions during the PETM in this region, suggesting the possibility of three distinct, rapid releases of isotopically depleted carbon into the ocean-atmosphere system. The results presented here are one of only a few paleoclimate reconstructions from continental sediments spanning the PETM in the Southern Hemisphere.

UR - http://www.scopus.com/inward/record.url?scp=85012074584&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012074584&partnerID=8YFLogxK

U2 - 10.1016/j.palaeo.2017.01.042

DO - 10.1016/j.palaeo.2017.01.042

M3 - Article

AN - SCOPUS:85012074584

VL - 471

SP - 181

EP - 195

JO - Palaeogeography, Palaeoclimatology, Palaeoecology

JF - Palaeogeography, Palaeoclimatology, Palaeoecology

SN - 0031-0182

ER -