Tracing environmental change in southern Patagonia using beryllium isotopes, Laguna Potrok Aike, Argentina

Kyeong Ja Kim, Bernd Zolitschka, Timothy A J Jull, Christian Ohlendorf, Torsten Haberzettl, Hiroyuki Matsuzaki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have examined the relationship between beryllium isotopes and the hydrological record of Laguna Potrok Aike, a maar lake in southern Argentina for the past 16,000 cal BP. Our study shows that sedimentary 10Be and 9Be records of Laguna Potrok Aike are associated with the hydrological balance, when compared to other proxies such as Ca, Ti and total inorganic carbon (TIC). During drier periods, the level of 9Be is decreased. 10Be follows this trend from 16,000 to 8000 cal BP, for younger samples, the concentration of 10Be increases at about 5000 cal BP and in recent times, but is otherwise relatively constant. At 13,000 cal BP total beryllium ( 9Be) was relatively low, but the 10Be/ 9Be ratio was the highest for the entire record studied. Our study shows that beryllium isotopes can be used for tracing climatic signals associated with lake level changes, i.e., dry or wet conditions at Laguna Potrok Aike.

Original languageEnglish (US)
Pages (from-to)27-33
Number of pages7
JournalQuaternary Geochronology
Volume9
DOIs
StatePublished - Jun 2012

Fingerprint

beryllium isotope
environmental change
maar
beryllium
inorganic carbon
lake level
lake

Keywords

  • Be-10
  • Be-10/Be-9
  • Be-9
  • Hydrological variations
  • Laguna Potrok Aike
  • Lake sediment
  • Patagonia

ASJC Scopus subject areas

  • Geology
  • Earth and Planetary Sciences (miscellaneous)
  • Stratigraphy

Cite this

Tracing environmental change in southern Patagonia using beryllium isotopes, Laguna Potrok Aike, Argentina. / Kim, Kyeong Ja; Zolitschka, Bernd; Jull, Timothy A J; Ohlendorf, Christian; Haberzettl, Torsten; Matsuzaki, Hiroyuki.

In: Quaternary Geochronology, Vol. 9, 06.2012, p. 27-33.

Research output: Contribution to journalArticle

Kim, Kyeong Ja ; Zolitschka, Bernd ; Jull, Timothy A J ; Ohlendorf, Christian ; Haberzettl, Torsten ; Matsuzaki, Hiroyuki. / Tracing environmental change in southern Patagonia using beryllium isotopes, Laguna Potrok Aike, Argentina. In: Quaternary Geochronology. 2012 ; Vol. 9. pp. 27-33.
@article{78bead744fef4ffc8db4a741566971a7,
title = "Tracing environmental change in southern Patagonia using beryllium isotopes, Laguna Potrok Aike, Argentina",
abstract = "We have examined the relationship between beryllium isotopes and the hydrological record of Laguna Potrok Aike, a maar lake in southern Argentina for the past 16,000 cal BP. Our study shows that sedimentary 10Be and 9Be records of Laguna Potrok Aike are associated with the hydrological balance, when compared to other proxies such as Ca, Ti and total inorganic carbon (TIC). During drier periods, the level of 9Be is decreased. 10Be follows this trend from 16,000 to 8000 cal BP, for younger samples, the concentration of 10Be increases at about 5000 cal BP and in recent times, but is otherwise relatively constant. At 13,000 cal BP total beryllium ( 9Be) was relatively low, but the 10Be/ 9Be ratio was the highest for the entire record studied. Our study shows that beryllium isotopes can be used for tracing climatic signals associated with lake level changes, i.e., dry or wet conditions at Laguna Potrok Aike.",
keywords = "Be-10, Be-10/Be-9, Be-9, Hydrological variations, Laguna Potrok Aike, Lake sediment, Patagonia",
author = "Kim, {Kyeong Ja} and Bernd Zolitschka and Jull, {Timothy A J} and Christian Ohlendorf and Torsten Haberzettl and Hiroyuki Matsuzaki",
year = "2012",
month = "6",
doi = "10.1016/j.quageo.2012.02.006",
language = "English (US)",
volume = "9",
pages = "27--33",
journal = "Quaternary Geochronology",
issn = "1871-1014",
publisher = "Elsevier",

}

TY - JOUR

T1 - Tracing environmental change in southern Patagonia using beryllium isotopes, Laguna Potrok Aike, Argentina

AU - Kim, Kyeong Ja

AU - Zolitschka, Bernd

AU - Jull, Timothy A J

AU - Ohlendorf, Christian

AU - Haberzettl, Torsten

AU - Matsuzaki, Hiroyuki

PY - 2012/6

Y1 - 2012/6

N2 - We have examined the relationship between beryllium isotopes and the hydrological record of Laguna Potrok Aike, a maar lake in southern Argentina for the past 16,000 cal BP. Our study shows that sedimentary 10Be and 9Be records of Laguna Potrok Aike are associated with the hydrological balance, when compared to other proxies such as Ca, Ti and total inorganic carbon (TIC). During drier periods, the level of 9Be is decreased. 10Be follows this trend from 16,000 to 8000 cal BP, for younger samples, the concentration of 10Be increases at about 5000 cal BP and in recent times, but is otherwise relatively constant. At 13,000 cal BP total beryllium ( 9Be) was relatively low, but the 10Be/ 9Be ratio was the highest for the entire record studied. Our study shows that beryllium isotopes can be used for tracing climatic signals associated with lake level changes, i.e., dry or wet conditions at Laguna Potrok Aike.

AB - We have examined the relationship between beryllium isotopes and the hydrological record of Laguna Potrok Aike, a maar lake in southern Argentina for the past 16,000 cal BP. Our study shows that sedimentary 10Be and 9Be records of Laguna Potrok Aike are associated with the hydrological balance, when compared to other proxies such as Ca, Ti and total inorganic carbon (TIC). During drier periods, the level of 9Be is decreased. 10Be follows this trend from 16,000 to 8000 cal BP, for younger samples, the concentration of 10Be increases at about 5000 cal BP and in recent times, but is otherwise relatively constant. At 13,000 cal BP total beryllium ( 9Be) was relatively low, but the 10Be/ 9Be ratio was the highest for the entire record studied. Our study shows that beryllium isotopes can be used for tracing climatic signals associated with lake level changes, i.e., dry or wet conditions at Laguna Potrok Aike.

KW - Be-10

KW - Be-10/Be-9

KW - Be-9

KW - Hydrological variations

KW - Laguna Potrok Aike

KW - Lake sediment

KW - Patagonia

UR - http://www.scopus.com/inward/record.url?scp=84862778613&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862778613&partnerID=8YFLogxK

U2 - 10.1016/j.quageo.2012.02.006

DO - 10.1016/j.quageo.2012.02.006

M3 - Article

AN - SCOPUS:84862778613

VL - 9

SP - 27

EP - 33

JO - Quaternary Geochronology

JF - Quaternary Geochronology

SN - 1871-1014

ER -