Holocene Lake-Level Fluctuations of Lake Aricota, Southern Peru

Lacustrine deposits exposed around Lake Aricota, Peru (17° 22′S), a 7.5-km2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable...

Full description

Saved in:
Bibliographic Details
Published inQuaternary research Vol. 56; no. 2; pp. 181 - 190
Main Authors Placzek, Christa, Quade, Jay, Betancourt, Julio L.
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.09.2001
Elsevier Inc
Elsevier
Subjects
America
Andes. Andean States
Bgi / Prodig
Peru
Peru, Andes Mts
Peru, Aricota L
Peru
Andes
C 14 dating
Quaternary
Climatic variation
Lake level
Palaeo-environment
Lake
Holocene
Comparative study
Online AccessGet full text

Cover

More Information
Summary:Lacustrine deposits exposed around Lake Aricota, Peru (17° 22′S), a 7.5-km2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable material with minimal 14C reservoir effects (<350 yr). Diatomites associated with highstands several meters above the modern lake level indicate wet episodes. Maximum Holocene lake level was attained before 6100 14C yr B.P. and ended ∼2700 14C yr B.P. Moderately high lake levels occurred at 1700 and 1300 14C yr B.P. The highstand at Lake Aricota during the middle Holocene is coeval with a major lowstand at Lake Titicaca (16°S), which is only 130 km to the northeast and shares a similar climatology. Comparisons with other marine and terrestrial records highlight emerging contradictions over the nature of mid-Holocene climate in the central Andes.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0033-5894
1096-0287
DOI:10.1006/qres.2001.2263