noaa-lake-9950
Lake Titicaca 20-60KYrBP Biogenic Silica and Grain Size Data
Fritz, S.C.; Baker, P.A.; Ekdahl, E.; Seltzer, G.O.; Stevens, L.R.
Lake Titicaca 20-60KYrBP Biogenic Silica and Grain Size Data
2010-08-25
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/9950
Investigator
S.C.
Fritz
Investigator
P.A.
Baker
Investigator
E.
Ekdahl
Investigator
G.O.
Seltzer
Investigator
L.R.
Stevens
earth science
paleoclimate
paleolimnology
depth at sample end,null,null,meter,null,paleolimnology,composited,null,N,null
earth science
paleoclimate
paleolimnology
total saline diatoms,null,null,percent,null,paleolimnology,null,null,N,saline planktic
earth science
paleoclimate
paleolimnology
total benthic diatoms,null,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample start,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample start,null,null,meter,null,paleolimnology,composited,null,N,null
earth science
paleoclimate
paleolimnology
total freshwater diatoms,null,null,percent,null,paleolimnology,null,null,N,freshwater planktic
earth science
paleoclimate
paleolimnology
grain size mean,sediment,null,micrometer,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample end,null,null,meter,null,paleolimnology,corrected,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample end,null,null,centimeter,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
biogenic silica,sediment,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
depth at sample start,null,null,meter,null,paleolimnology,corrected,null,N,null
earth science
paleoclimate
paleolimnology
delta 13C,organic matter,null,per mil PDB,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
total planktic diatoms,null,null,percent,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
age,null,null,calendar year before present,null,paleolimnology,null,null,N,null
earth science
paleoclimate
paleolimnology
carbon isotopes
earth science
paleoclimate
paleolimnology
population abundance
earth science
paleoclimate
paleolimnology
physical properties
earth science
paleoclimate
paleolimnology
geochemistry
geoscientificInformation
Glacial
PAGES 2k Network
PAGES LOTRED SA2k
Tropics
59891 cal yr BP
10034 cal yr BP
Complete
-15.93
-15.93
-69.25
-69.25
3810
3810
Continent
South America
Peru
Lake Titicaca Core LT01-2B>LATITUDE -15.93>LONGITUDE -69.25
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Fritz, S.C., P.A. Baker, E. Ekdahl, G.O. Seltzer,
and L.R. Stevens. 2010.
Millennial-scale climate variability during the last glacial
period in the tropical Andes.
Quaternary Science Reviews, Vol. 29, pp. 1017-1024.
doi:10.1016/j.quascirev.2010.01.001
Millennial-scale climate variation during the Last Glacial period
is evident in many locations worldwide, but it is unclear if such
variation occurred in the interior of tropical South America,
and, if so, how the low-latitude variation was related to its
high-latitude counterpart. A high-resolution record, derived
from the deep drilling of sediments on the floor of Lake Titicaca
in the southern tropical Andes, is presented that shows clear
evidence of millennial-scale climate variation between ~60
and 20 ka BP. This variation is manifested by alternations
of two interbedded sedimentary units. The two units have
distinctive sedimentary, geochemical, and paleobiotic properties
that are controlled by the relative abundance of terrigenous
or nearshore components versus pelagic components. The sediments
of more terrigenous or nearshore nature likely were deposited
during regionally wetter climates when river transport of water
and sediment was higher, whereas the sediments of more pelagic
character were deposited during somewhat drier climates regionally.
The majority of the wet periods inferred from the Lake Titicaca
sediment record are correlated with the cold events in the
Greenland ice cores and North Atlantic sediment cores, indicating
that increased intensity of the South American summer monsoon
was part of near-global scale climate excursions.
STUDY NOTES: Biogenic silica, grain size, and diatom data from 136m long sediment core
LT01-2B, Lake Titicaca, Bolivia/Peru, drilled in April and May 2001,
covering ~60 - 20 KYrBP. d13C data is from P.A. Baker, diatom and BiSiO2
data is from S.C. Fritz, and grain size data from G.O. Seltzer.
Additional information on the LT01-2B drill cores, age model
development, and additional core data are included with
Fritz et al. 2007 Lake Titicaca data set:
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2007.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2010.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/bolivia/titicaca2010.xls
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11