noaa-cave-5432
Holmgren et al. 2003 Cold Air Cave Stalagmite 25KYr Stable Isotope Data
Holmgren, K.; Lee-Thorp, J.A.; Cooper, G.R.J.; Lundblad, K.; Partridge, T.C.; Scott, L.; Sithaldeen, R.; Talma, A.S.; Tyson, P.D.
Holmgren et al. 2003 Cold Air Cave Stalagmite 25KYr Stable Isotope Data
2005-04-01
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/5432
Investigator
K.
Holmgren
Investigator
J.A.
Lee-Thorp
Investigator
G.R.J.
Cooper
Investigator
K.
Lundblad
Investigator
T.C.
Partridge
Investigator
L.
Scott
Investigator
R.
Sithaldeen
Investigator
A.S.
Talma
Investigator
P.D.
Tyson
earth science
paleoclimate
speleothems
delta 18O,calcium carbonate,null,per mil PDB,null,speleothems,corrected,isotope ratio mass spectrometry,N,corrected for aragonite
earth science
paleoclimate
speleothems
age,null,null,calendar year before present,null,speleothems,null,null,N,present defined as 2000 CE
earth science
paleoclimate
speleothems
delta 13C,calcium carbonate,null,per mil PDB,null,speleothems,corrected,isotope ratio mass spectrometry,N,corrected for aragonite
earth science
paleoclimate
speleothems
delta 13C,calcium carbonate,null,per mil PDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
speleothems
delta 18O,calcium carbonate,null,per mil PDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
speleothems
carbon isotopes
earth science
paleoclimate
speleothems
oxygen isotopes
geoscientificInformation
PAGES 2k Network
PAGES Africa 2k
-22428 AD
1998 AD
24378 cal yr BP
-48 cal yr BP
Complete
-24.02
-24.02
29.11
29.11
Continent
Africa
Southern Africa
South Africa
Cold Air Cave>LATITUDE -24.02>LONGITUDE 29.11
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
Holmgren, K., J.A. Lee-Thorp, G.R.J. Cooper, K. Lundblad, T.C. Partridge,
L. Scott, R. Sithaldeen, A. Siep Talmaf and P.D. Tyson. 2003.
Persistent millennial-scale climatic variability over the past 25,000 years
in Southern Africa. Quaternary Science Reviews, 22(21-22), 2311-2326. doi:10.1016/S0277-3791(03)00204-X
Data from stalagmites in the Makapansgat Valley, South Africa, document
regional climatic change in southern Africa in the Late Pleistocene and
Holocene. A new TIMS U-series dated stalagmite indicates speleothem growth
from 24.4 to 12.7 ka and from 10.2 to 0 ka, interrupted by a 2.5 ka hiatus.
High-resolution oxygen and carbon stable isotope data suggest that
postglacial warming was first initiated ~17 ka, was interrupted by cooling,
probably associated with the Antarctic Cold Reversal, and was followed by
strong warming after 13.5 ka. The Early Holocene experienced warm,
evaporative conditions with fewer C4 grasses. Cooling is evident from
~6 to 2.5 ka, followed by warming between 1.5 and 2.5 ka and briefly at
~AD 1200. Maximum Holocene cooling occurred at AD 1700. The new stalagmite
largely confirms results from shorter Holocene stalagmites reported earlier.
The strongest variability superimposed on more general trends has a
quasi-periodicity between 2.5 and 4.0 ka. Also present are weaker ~1.0 ka
and ~100-year oscillations, the latter probably solar induced. Given
similarities to the Antarctic records, the proximate driving force
producing millennial- and centennial-scale changes in the Makapansgat
record is postulated to be atmospheric circulation changes associated with
change in the Southern Hemisphere circumpolar westerly wind vortex.
STUDY NOTES: Description & Notes:
Stable oxygen and carbon isotope data from TIMS U-series dated stalagmites from Cold Air Cave, Makapansgat Valley, South Africa, document regional climatic change in southern Africa over the past 25,000 years.
Hiatuses Indentified:
Speleothem growth from 24.4 to 12.7 ka and from 10.2 to 0 ka, interrupted by a 2.5 ka hiatus.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/cold-air-cave2003.xls
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/cold-air-cave2003.txt
USA/NOAA
DIF
Version 9.8.4
2018-12-11
2018-12-11