| PALEOLIMNOLOGY |
Lateglacial and Holocene wet-dry cycles in southern Patagonia: chronology, sedimentology and geochemistry of a lacustrine
record from Laguna Potrok Aike, Argentina.
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Haberzettl, T.,Ohlendorf, C.,Zolitschka, B. 2007 Lateglacial and Holocene wet-dry cycles in southern Patagonia: chronology,
sedimentology and geochemistry of a lacustrine record from Laguna Potrok Aike, Argentina. The Holocene Vol. 17, No.3, pp.
297¿310.
| Data Coverage |
North: -51.95 * South: -51.95 |
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West: -70.3833 * East: -70.3833 |
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Altitude: 113 m |
Start Year: 16088 cal yr BP * End Year: -48 cal yr BP
Data: Please Cite Data Contributors!
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Summary: A high-resolution multiproxy geochemical approach was applied to the
sediments of Laguna Potrok Aike in an attempt to reconstruct moist and
dry periods during the past 16 000 years in southeastern Patagonia.
The age¿depth model is inferred from AMS 14C dates and tephrochronology,
and suggests moist conditions during the Lateglacial and early Holocene
(16 000¿8700 cal. BP) interrupted by drier conditions before the beginning
of the Holocene (13 200¿11 400 cal. BP). Data also imply that this period
was a major warm phase in southeastern Patagonia and was approximately
contemporaneous with the Younger Dryas chronozone in the Northern
Hemisphere (12 700¿11 500 cal. BP). After 8650 cal. BP a major drought
may have caused the lowest lake level of the record. Since 7300 cal. BP,
the lake level rose and was variable until the `Little Ice Age¿, which
was the dominant humid period after 8650 cal. BP.
More Info on Paleolimnology |
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Complete XML Record: noaa-lake-6067
(Last Revised: 2009-02-11 )
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DOC/NOAA/NESDIS/NCDC (National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce )
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USA
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| http://www.ncdc.noaa.gov/paleo/ |
| E-mail: bruce.a.bauer@noaa.gov |
| E-mail: paleo@noaa.gov |
Phone: 303-497-6280
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