http://lod.bco-dmo.org/id/dataset/960297
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2025-05-07
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Results of x-ray diffraction (XRD) analyses collected for various Oceanic Flux Program (OFP) samples and end members for the for OFP/fish carbonate study
2025-05-08
publication
2025-05-08
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-05-14
publication
https://doi.org/10.26008/1912/bco-dmo.960297.1
Mohammed Hashim
Woods Hole Oceanographic Institution
principalInvestigator
Maureen H. Conte
Bermuda Institute of Ocean Sciences
principalInvestigator
Rut Pedrosa Pàmies
Marine Biological Laboratory
principalInvestigator
Adam V. Subhas
Woods Hole Oceanographic Institution
principalInvestigator
David Bish
Indiana University
principalInvestigator
Stephen F. Crowley
University of Liverpool
principalInvestigator
Paul F. Dennis
University of East Anglia
principalInvestigator
Chris T. Perry
University of Exeter
principalInvestigator
Michael A. Salter
University of Exeter
principalInvestigator
Rod W. Wilson
University of Exeter
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Hashim, M., Conte, M. H., Salter, M. A., Pedrosa Pàmies, R., Weber, J., Hayden, M. G., Wilson, R. W., Perry, C. T., Crowley, S. F., Dennis, P. F., Bish, D., Subhas, A. V. (2025) Results of x-ray diffraction (XRD) analyses collected for various Oceanic Flux Program (OFP) samples and end members for the for OFP/fish carbonate study. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-05-08 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.960297.1 [access date]
X-Ray Diffraction Results Dataset Description: Methods and Sampling: <p>Measurements were conducted using a PANalytical X'Pert PRO X-ray powder diffractometer using a copper (Cu) anode and an X'Celerator Scientific 1D position-sensitive detector in Bragg-Brentano geometry and were processed using the fundamental-parameters Rietveld refinement software TOPAS V7 (Coelho, 2018).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2205984 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2205984
completed
Mohammed Hashim
Woods Hole Oceanographic Institution
hashimm@usc.edu
pointOfContact
Maureen H. Conte
Bermuda Institute of Ocean Sciences
508-289-7744
Bermuda Institute of Ocean Sciences 17 Biological Station
St. Georges
GE01
Bermuda
maureen.conte@bios.edu
pointOfContact
Rut Pedrosa Pàmies
Marine Biological Laboratory
508-289-7715
7 MBL St
Woods Hole
MA
02543
USA
rpedrosa@mbl.edu
pointOfContact
Adam V. Subhas
Woods Hole Oceanographic Institution
508-289-2399
266 Woods Hole Rd. MS#8
Woods Hole
MA
02543
USA
asubhas@whoi.edu
pointOfContact
David Bish
Indiana University
Bloomington
IN
USA
bish@iu.edu
pointOfContact
Stephen F. Crowley
University of Liverpool
Sfcrow@liverpool.ac.uk
pointOfContact
Paul F. Dennis
University of East Anglia
P.Dennis@uea.ac.uk
pointOfContact
Chris T. Perry
University of Exeter
Amory Building, Rennes Drive
Exeter
UK
C.Perry@exeter.ac.uk
pointOfContact
Michael A. Salter
University of Exeter
Exeter
UK
M.A.Salter@exeter.ac.uk
pointOfContact
Rod W. Wilson
University of Exeter
Geoffrey Pope Building, Stocker Road
Exeter
UK
R.W.Wilson@exeter.ac.uk
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_ID
Sample_type
Sample_source
Trap_depth
Latitude
Longitude
Phase
Mg_content
calcite_phase
calcite_phase_error
PANalytical X’Pert PRO X-ray powder diffractometer
theme
None, User defined
sample identification
sample description
depth
latitude
longitude
Magnesium
percent composition
featureType
BCO-DMO Standard Parameters
X-ray diffractometer
instrument
BCO-DMO Standard Instruments
OFP_Time-Series
service
Deployment Activity
~45 km southeast of Bermuda
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
OCE-PRF: Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis
https://osprey.bco-dmo.org/project/955330
OCE-PRF: Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis
<p><em>NSF Award Abstract:</em><br />
OCE-PRF Towards Quantifying Calcium Carbonate Sediment Dissolution During Marine Diagenesis The goal of the project is to investigate dissolution of calcium carbonate (CaCO3) in sediments below the seafloor and determine its importance to the chemistry of seawater. This project uses sediment samples and chemical data collected from different parts of the ocean during the past five decades by scientific ocean drilling programs. Sediment dissolution of carbonate can lessen the impact of ocean acidification, the process that causes the pH of the ocean to decrease due to the uptake of carbon dioxide (CO2) from the atmosphere. Ocean acidification threatens the survival of marine organisms, such as oysters, clams, and coral reefs, which could alter marine food chains and food supply to humans. By improving understanding of carbonate dissolution in the ocean, results from this project will enable better predictions of the effects of ocean acidification on marine organisms. This will advance the progress of science and contribute to the knowledge that can inform public policy. In addition, understanding carbonate sediment dissolution serves other important purposes. For example, dissolution can create small spaces between sediments that may get filled with groundwater once sediments convert to rocks over millions of years. Thus, understanding the occurrence and spatial distribution of spaces within rocks may help determine the volume and movement of groundwater in subsurface aquifers. This project provides support for a postdoctoral research fellow and research training opportunities for students through the Summer Student Fellowship and Woods Hole-wide Partnership Education Programs at the Woods Hole Oceanographic Institution.</p>
<p>Carbonate mineral dissolution is an integral part of the alkalinity and carbon cycles in the ocean and is expected to play an increasingly significant role in mediating changes in ocean chemistry as atmospheric CO2 continues to rise. The goal of this project is to provide thermodynamic constraints necessary for quantifying carbonate sediment dissolution in marine diagenetic environments. Specifically, the CaCO3 saturation state of pore fluids will be calculated in 365 globally distributed sites from previous scientific ocean drilling expeditions using a specially developed Pitzer ion activity model which is particularly useful for calculating activity coefficients in high ionic strength solutions such as those that characterize most diagenetic environments. These calculations will be substantiated with geochemical and textural analyses of sediment samples from four representative sites to identify the specific diagenetic processes (e.g., dissolution, precipitation, and recrystallization) and document the conditions responsible for their occurrence and prevalence. The immediate advantage of calculating the saturation state of pore fluids is that such data can be used to estimate carbonate sediment dissolution below the seafloor and quantify its contribution to the alkalinity and carbon cycles, which will lead to more accurate predictions of the consequences of ocean acidification. Another benefit of the global saturation state dataset is that it will improve our understanding of authigenic carbonate precipitation and its link to the carbon cycle over Earth history, which has been proposed as a significant sink for carbon. Furthermore, by complementing the thermodynamic calculations with textural and geochemical analyses, this project will parse out various diagenetic processes and identify the sedimentological and geochemical conditions responsible for their occurrence. Such knowledge is crucial for evaluating the impact of diagenesis on the carbonate-hosted paleoenvironmental proxies. Collectively, this project will pave the way towards a mechanistic understanding of carbonate diagenesis. This will provide important constraints on the oceanic alkalinity cycle, carbon burial rates, and geochemical proxies, which ultimately help us better understand the future of our ocean system in the context of climate change.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Marine CaCO3 and ocean chemistry
largerWorkCitation
project
eng; USA
oceans
~45 km southeast of Bermuda
-76.3272
145.4464
-14.6786
31.9167
2025-05-08
0
BCO-DMO catalogue of parameters from Results of x-ray diffraction (XRD) analyses collected for various Oceanic Flux Program (OFP) samples and end members for the for OFP/fish carbonate study
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/960369.rdf
Name: Sample_ID
Units: unitless
Description: <p>The ID of the analyzed sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/960370.rdf
Name: Sample_type
Units: unitless
Description: <p>The category the sample belongs to</p>
http://lod.bco-dmo.org/id/dataset-parameter/960371.rdf
Name: Sample_source
Units: unitless
Description: <p>Source of the sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/960372.rdf
Name: Trap_depth
Units: meters (m)
Description: <p>Trap depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/960373.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/960374.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/960375.rdf
Name: Phase
Units: unitless
Description: <p>Phase: A or B. Most samples contained more than one calcite phase, each with a separate peak in the XRD data. The intensity and peak position for each phase were used to determine the phase abundance and calcite Mg content. Phases are given a purely descriptive term: "A" or "B". </p>
http://lod.bco-dmo.org/id/dataset-parameter/960376.rdf
Name: Mg_content
Units: mol percent
Description: <p>The Mg content in calcite</p>
http://lod.bco-dmo.org/id/dataset-parameter/960377.rdf
Name: calcite_phase
Units: weight percent
Description: <p>The weight percent of calcite</p>
http://lod.bco-dmo.org/id/dataset-parameter/960378.rdf
Name: calcite_phase_error
Units: weight percent
Description: <p>The error of the weight percent of calcite</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
6903
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/b08d579f-224b-40c0-a330-87464a1e0e20/content
download
https://doi.org/10.26008/1912/bco-dmo.960297.1
download
onLine
dataset
<p>Measurements were conducted using a PANalytical X'Pert PRO X-ray powder diffractometer using a copper (Cu) anode and an X'Celerator Scientific 1D position-sensitive detector in Bragg-Brentano geometry and were processed using the fundamental-parameters Rietveld refinement software TOPAS V7 (Coelho, 2018).</p>
Specified by the Principal Investigator(s)
<p>Data were processed using Rietveld refinement using TOPAS V7. The raw data are included as supplemental files.</p>
Specified by the Principal Investigator(s)
- Imported original file "XRD results.xlsx" into the BCO-DMO system.
- Flagged "NA" as a missing data identifier (missing data are blank/empty in the final CSV file).
- Made south latitude values negative.
- Made west longitude values negative.
- Renamed fields to comply with BCO-DMO naming conventions.
- Saved the final file as "960297_v1_xrd_results.csv".
- Opened original data file "Raw XRD data.xlsx" and created separate files for each run; then, saved the 3 supplemental files in CSV format.
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
PANalytical X’Pert PRO X-ray powder diffractometer
PANalytical X’Pert PRO X-ray powder diffractometer
PI Supplied Instrument Name: PANalytical X’Pert PRO X-ray powder diffractometer Instrument Name: X-ray diffractometer Instrument Short Name:XRD Instrument Description: Instruments that identify crystalline solids by measuring the characteristic spaces between layers of atoms or molecules in a crystal.
Deployment: OFP_Time-Series
OFP_Time-Series
OFP_mooring
mooring
OFP_Time-Series
Maureen H. Conte
Marine Biological Laboratory
OFP_mooring
mooring