<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_995587</Entry_ID>
<Entry_Title>Scanning Electron Micrographs of biosignatures of microbial mats (IODP Expedition 389)</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Westphal, Hildegard; Garuglieri, Elisa; Webb, Gregory E; Nothdurft, Luke; Merkel, Anna; Khanna, Pankaj; Karki, Poornima; Nohl, Theresa; Gischler, Eberhard; Webster, Jody M</Dataset_Creator>
<Dataset_Title>Scanning Electron Micrographs of biosignatures of microbial mats (IODP Expedition 389)</Dataset_Title>
<Dataset_Release_Date>2026-07-06</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.995587</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Hildegard</First_Name>
<Last_Name>Westphal</Last_Name>
<Email>hildegard.westphal@leibniz-zmt.de</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Event label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Sample code/label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Half</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Description</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Image</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>389-M0097B</Keyword>
<Keyword>389-M0102C</Keyword>
<Keyword>389-M0104A</Keyword>
<Keyword>Benthic Portable Remotely Operated Drill (PROD5)</Keyword>
<Keyword>biosignatures</Keyword>
<Keyword>Coral Reef</Keyword>
<Keyword>Exp389</Keyword>
<Keyword>Hawaiian Drowned Reefs</Keyword>
<Keyword>HIL-04Aa</Keyword>
<Keyword>KAW-04Bb</Keyword>
<Keyword>KOH-01Ac</Keyword>
<Keyword>microbialites</Keyword>
<Keyword>Pleistocene</Keyword>
<Sensor_Name>
<Long_Name>DSDP/ODP/IODP sample designation</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>MMA Valour</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>2023-09-10</Start_Date>
<Stop_Date>2023-10-16</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>19.87031057</Southernmost_Latitude>
<Northernmost_Latitude>20.28987123</Northernmost_Latitude>
<Westernmost_Longitude>-156.0628769</Westernmost_Longitude>
<Easternmost_Longitude>-154.9539999</Easternmost_Longitude>
</Spatial_Coverage>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>156 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Westphal, Hildegard; Garuglieri, Elisa; Webb, Gregory E; Nothdurft, Luke; Merkel, Anna; Khanna, Pankaj; Karki, Poornima; Nohl, Theresa; Gischler, Eberhard; Webster, Jody M (preprint): Biosignatures of microbial mats in Pleistocene coral reef cores from IODP Expedition 389 (Hawaiian Drowned Reefs). Biogeosciences, https://doi.org/10.5194/egusphere-2026-1564</Reference>
<Summary>For the study of the Pleistocene reef microbialites from Hawaii, samples were examined under a scanning electron microscope (SEM) to identify microbial features allowing for biological identification. With SEM imaging of microbialite surfaces and vertical polished sections, we characterize the ultrastructure of the crusts and identify trapped and bound particles as well as any microbial remains that might allow identification of the microbes, e.g., filaments that are indicative of taxonomic determination. SEM analysis with a secondary electron (SE) detector was performed with a Teneo-VS SEM at the KAUST Imaging and Characterization Core Lab, and a Tescan Vega LMU at the ZMT Geosciences Laboratory. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995587"!</Summary>
<Related_URL>
<URL>https://doi.org/10.14379/iodp.proc.389.2025</URL>
<Description>Exp389</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.5194/egusphere-2026-1564</URL>
<Description>Biosignatures of microbial mats in Pleistocene coral reef cores from IODP Expedition 389 (Hawaiian Drowned Reefs)</Description>
</Related_URL>
<Related_URL>
<URL>https://hdl.handle.net/10013/epic.27914.d001</URL>
<Description>DSDP/ODP/IODP sample designation</Description>
</Related_URL>
<Related_URL>
<URL>https://store.pangaea.de/documentation/Cruise_Reports/OtherVessels/MMA_Valour.pdf</URL>
<Description>MMA Valour</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-07-06</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-07-06</Last_DIF_Revision_Date>
</DIF>
