<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.8.4.xsd">
  <Entry_ID>noaa-cave-5537</Entry_ID>
  <Entry_Title>Drysdale et al. 2006 Buca della Renella, Italy Flowstone Data</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Drysdale, R.N.; Zanchetta, G.; Hellstrom, J.C.; Maas, R.; Fallick, A.E.; Pickett, M.; Cartwright, I.; Piccini, L.</Dataset_Creator>
    <Dataset_Title>Drysdale et al. 2006 Buca della Renella, Italy Flowstone Data</Dataset_Title>
    <Dataset_Release_Date>2007-09-17</Dataset_Release_Date>
    <Dataset_Publisher>NCDC-Paleoclimatology</Dataset_Publisher>
    <Data_Presentation_Form>ONLINE Files</Data_Presentation_Form>
    <Dataset_DOI>Pending</Dataset_DOI>
    <Online_Resource>https://www.ncdc.noaa.gov/paleo/study/5537</Online_Resource>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>R.N.</First_Name>
    <Last_Name>Drysdale</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>G.</First_Name>
    <Last_Name>Zanchetta</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>J.C.</First_Name>
    <Last_Name>Hellstrom</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>R.</First_Name>
    <Last_Name>Maas</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>A.E.</First_Name>
    <Last_Name>Fallick</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>M.</First_Name>
    <Last_Name>Pickett</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>I.</First_Name>
    <Last_Name>Cartwright</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>L.</First_Name>
    <Last_Name>Piccini</Last_Name>
  </Personnel>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Detailed_Variable>magnesium/calcium,calcium carbonate,null,mole per mole,null,speleothems,raw,inductively-coupled plasma atomic emission spectroscopy,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Detailed_Variable>fluorescence,calcium carbonate,null,nanometer,null,speleothems,raw,fluorescence spectroscopy,N,fluorescence emission wavelength</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Detailed_Variable>delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Detailed_Variable>age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Detailed_Variable>delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Variable_Level_1>carbon isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Variable_Level_1>oxygen isotopes</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>earth science</Category>
    <Topic>paleoclimate</Topic>
    <Term>speleothems</Term>
    <Variable_Level_1>geochemistry</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>-5050 AD</Paleo_Start_Date>
    <Paleo_Stop_Date>680 AD</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Paleo_Temporal_Coverage>
    <Paleo_Start_Date>7000 cal yr BP</Paleo_Start_Date>
    <Paleo_Stop_Date>1270 cal yr BP</Paleo_Stop_Date>
  </Paleo_Temporal_Coverage>
  <Data_Set_Progress>Complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>44.08</Southernmost_Latitude>
    <Northernmost_Latitude>44.08</Northernmost_Latitude>
    <Westernmost_Longitude>10.21</Westernmost_Longitude>
    <Easternmost_Longitude>10.21</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>Continent</Location_Category>
    <Location_Type>Europe</Location_Type>
    <Location_Subregion1>Southern Europe</Location_Subregion1>
    <Location_Subregion2>Italy</Location_Subregion2>
    <Detailed_Location>Buca della Renella&gt;LATITUDE 44.08&gt;LONGITUDE 10.21</Detailed_Location>
  </Location>
  <Access_Constraints>None</Access_Constraints>
  <Use_Constraints>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.</Use_Constraints>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>DOC/NOAA/NESDIS/NCEI</Short_Name>
      <Long_Name>National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce </Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>https://www.ncdc.noaa.gov/data-access/paleoclimatology-data</Data_Center_URL>
    <Personnel>
      <Role>DATA Center Contact</Role>
      <First_Name>Bruce</First_Name>
      <Last_Name>Bauer</Last_Name>
      <Email>bruce.a.bauer@noaa.gov</Email>
      <Email>paleo@noaa.gov</Email>
      <Phone>303-497-6280</Phone>
      <Fax>303-497-6513</Fax>
      <Contact_Address>
        <Address>325 Broadway, E/NE31</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80305-3328</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>online</Distribution_Media>
    <Distribution_Format>ASCII</Distribution_Format>
  </Distribution>
  <Reference>
    <Author>Russell Drysdale, Giovanni Zanchetta, John Hellstrom, Roland Maas, Anthony Fallick, Matthew Pickett, Ian Cartwright, and Leonardo Piccini</Author>
    <Publication_Date>2006</Publication_Date>
    <Title>Late Holocene drought responsible for the collapse of Old World civilizations is recorded in an Italian cave flowstone</Title>
    <Series>Geology</Series>
    <Volume>34</Volume>
    <Issue>2</Issue>
    <Pages>101-104</Pages>
    <DOI>10.1130/G22103.1</DOI>
    <Online_Resource>http://geology.gsapubs.org/content/34/2/101.abstract</Online_Resource>
  </Reference>
  <Summary>
    <Abstract>A severe drought in parts of low-latitude northeastern Africa and southwestern Asia ~4200 yr ago caused major disruption to ancient civilizations. Stable isotope, trace element, and organic 
fluorescence data from a calcite flowstone collected from the well-watered Alpi Apuane karst of central-western Italy indicate that the climatic event responsible for this drought was also recorded in mid-latitude Europe. Although the timing of this event coincides with an episode of increased ice-rafted debris to the subpolar North Atlantic, the regional ocean-atmosphere response seems atypical of similar Holocene ice-rafting events. Furthermore, comparison of the flowstone data with other regional proxies suggests that the most extreme part of the dry spell occurred toward the end of a longer-term climate anomaly. 
          STUDY NOTES: Stable isotope, Mg/Ca, and fluorescence data from flowstone sample RL4 from Buca della Renella, west central Italy, ~44°N, ~10°E.

Flowstone d18O and d13C values were determined by gas-source mass spectrometry.  Mg and Ca concentrations using standard inductively coupled plasma atomic emission spectroscopy.  Fluorescence measurements were made directly from RL4 using a fiber-optic probe coupled to a Varian Cary Eclipse spectrophotometer.  
230Th/234U dating was performed on thirteen 20–30 mg samples.  

Age age_calkaBP 2.68 is averages for Fluorescence column
PI submitted the following information 
age_calkaBP	Fluores_carb
2.68           452
2.68           459</Abstract>
  </Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/italy/renella2006.xls</URL>
    <Description>Excel Data File; Buca della Renella Flowstone Isotope, Mg/Ca, and Fluorescence Data</Description>
  </Related_URL>
  <Related_URL>
    <URL_Content_Type>
      <Type>GET DATA</Type>
    </URL_Content_Type>
    <URL>https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/europe/italy/renella2006.txt</URL>
    <Description>Text Data File; Buca della Renella Flowstone Isotope, Mg/Ca, and Fluorescence Data</Description>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NOAA</Short_Name>
  </IDN_Node>
  <Metadata_Name>DIF</Metadata_Name>
  <Metadata_Version>Version 9.8.4</Metadata_Version>
  <DIF_Creation_Date>2018-12-11</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2018-12-11</Last_DIF_Revision_Date>
</DIF>
