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  4. Late Quaternary hydrological variability in southeastern Patagonia - 45,000 years of terrestrial evidence from Laguna Potrok Aike
 
Zitierlink URN
https://nbn-resolving.de/urn:nbn:de:gbv:46-diss000103918

Late Quaternary hydrological variability in southeastern Patagonia - 45,000 years of terrestrial evidence from Laguna Potrok Aike

Veröffentlichungsdatum
2006-07-07
Autoren
Haberzettl, Torsten  
Betreuer
Zolitschka, Bernd  
Gutachter
Schäbitz, Frank  
Zusammenfassung
The maar lake Laguna Potrok Aike is located in the dry Patagonian steppe, an area with hitherto only scarce paleoenvironmental information. Within the project SALSA (South Argentinean Lake Sediment Archives and modelling) Laguna Potrok Aike turned out to be the key site for paleoenvironmental reconstruction in that area. With a continuous, high-resolution multi-proxy approach applied to the well radiocarbon and tephra dated sediments it was possible to distinguish between lake level high and low stands. Those do not only give information about the hydrological state of climatic periods like the Little Ice Age or the Medieval Climate Anomaly but also reflect hydrological variations for southern Patagonia during the past 16,000 cal. BP as well as Oxygen Isotope Stage 3. In this context the total inorganic carbon content was identified as a sensitive lake level indicator which was supported by various other proxies for lake level changes, minerogenic input or redox-conditions which are also suited for reconstructing paleoenvironmental conditions.
Schlagwörter
lacustrine sediments

; 

lake level changes

; 

Medieval Climate Anomaly

; 

Little Ice Age

; 

Southern Patagonia

; 

Argentina

; 

paleoenvironmental change

; 

European impact

; 

charcoal

; 

Santa Cruz

; 

lake sediments

; 

Holocene

; 

Younger Dryas

; 

geochemistry

; 

tephrochronology

; 

multi-proxy

; 

Pali Aike Volcanic Field
Institution
Universität Bremen  
Fachbereich
Fachbereich 08: Sozialwissenschaften (FB 08)  
Dokumenttyp
Dissertation
Zweitveröffentlichung
Nein
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

00010391.pdf

Size

6.42 MB

Format

Adobe PDF

Checksum

(MD5):5add2512103ae13876a63533cba273ca

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