NOAA/WDS Paleoclimatology - Lake Bosumtwi, Ghana Late Quaternary Magnetic Mineral Data

browse graphicPaleoclimatology - Lake
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of Ghana, Western Africa. The time period coverage is from 26655 to 152 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Peck, J.A.; Green, R.R.; Shanahan, T.; King, J.W.; Overpeck, J.T.; Scholz, C.A. (2007-01-01): NOAA/WDS Paleoclimatology - Lake Bosumtwi, Ghana Late Quaternary Magnetic Mineral Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/5454. Accessed [date].
  • Please refer to Credit tab for full citation information.
  • noaa-lake-5454
  • NCEI DSI 1200_01
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Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Bauer, Bruce
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
+1 303-497-6280
paleo@noaa.gov
Coverage Description Date Range: 26655 cal yr BP to 152 cal yr BP;
Time Period -24705 to 1798
Spatial Bounding Box Coordinates
N: 6.5
S: 6.5
E: -1.4167
W: -1.4167
Spatial Coverage Map
General Documentation
Publication Dates
  • publication: 2007-01-01
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: Physical property logging of whole core volumetric magnetic susceptibility and gammaray attenuation (an estimation of wet bulk density) was conducted on the piston cores using an automated Geotek multisensor core logger.
ABSTRACT SUPPLIED BY ORIGINATOR: We report magnetic hysteresis results from sediment cores obtained from Lake Bosumtwi, Ghana. As a hydrologically closed basin, the water budget of Lake Bosumtwi is extremely sensitive to changes in the precipitation/ evapotranspiration balance. Lake Bosumtwi lies in the path of the seasonal migration of the intertropical convergence zone (ITCZ); hence, the lake is ideally situated to study monsoon variability in West Africa. Five distinctive magnetic mineral zones (A-E) were identified in the 11-m-long sediment cores that span the last 26,000 calendar years. Prior to 12 calendar (cal) ka, low concentrations of multidomain, high-coercivity magnetic minerals are present. Three prominent shifts towards very high concentrations of high-coercivity iron sulfide (greigite) magnetic minerals are centered at 12,470, 17,290, and 22,600 calendar years during the last glacial period (magnetic zones D1-3). Between 12 and 3.2 cal ka, there is an abrupt shift to moderately high concentrations of mixed multidomain and single-domain, low-coercivity minerals and an organic-rich sapropel lithology. Since 3.2 cal ka, the magnetic mineral parameters reveal a shift to increased amounts of high-coercivity magnetic minerals.
Purpose Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Peck, J.A.; Green, R.R.; Shanahan, T.; King, J.W.; Overpeck, J.T.; Scholz, C.A. (2007-01-01): NOAA/WDS Paleoclimatology - Lake Bosumtwi, Ghana Late Quaternary Magnetic Mineral Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/5454. Accessed [date].
  • 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.
Cited Authors
  • Peck, J.A.
  • Green, R.R.
  • Shanahan, T.
  • King, J.W.
  • Overpeck, J.T.
  • Scholz, C.A.
Originators
  • Peck, J.A.
  • Green, R.R.
  • Shanahan, T.
  • King, J.W.
  • Overpeck, J.T.
  • Scholz, C.A.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology
  • earth science > paleoclimate > paleolimnology > geochemistry
Place keywords
  • Continent > Africa > Western Africa > Ghana> Lake Bosumtwi > LATITUDE 6.5 > LONGITUDE -1.4167
Use Constraints
  • Cite as: Peck, J.A.; Green, R.R.; Shanahan, T.; King, J.W.; Overpeck, J.T.; Scholz, C.A. (2007-01-01): NOAA/WDS Paleoclimatology - Lake Bosumtwi, Ghana Late Quaternary Magnetic Mineral Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/5454. Accessed [date].
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • 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.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • None
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Last Modified: 2018-12-11
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