Dataset: IODP360 - Raman Spectra
Deployment: IODP-360

Raman Spectra

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/854820

Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

Frieder Klein (Woods Hole Oceanographic Institution, WHOI)

Contact:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Delineating The Microbial Diversity and Cross-domain Interactions in The Uncharted Subseafloor Lower Crust Using Meta-omics and Culturing Approaches (Subseafloor Lower Crust Microbiology)

Version:

Deployment Synonyms:

JOIDES Resolution, International Ocean Discovery Program (IODP) Expedition 360 (X360)

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Description

Methods & Sampling

Dataset acquisition description

Location: Atlantis Bank oceanic core complex (SW Indian Ridge, Indian Ocean), 182.44 m below the seafloor, sample IODP X360-21-R2, organic inclusion and Fe-Mn oxide. Depth of seafloor at sampling site is 710.2 mbsl.

For more details on core sampling and data acquisition, please see Li et al. (2020).

Data Processing Description

Dataset Processing Description

Organic inclusions were analyzed in a petrographic thin section.

Raman spectra were collected using a Horiba LabRam HR confocal Raman system using a blue laser with a wavelength of 473 nm, a 600 grooves/mm grating, and a 50x objective. The slit size was 150 µm and the confocal hole diameter was 1mm. This setting was chosen to minimize oxidation of the Fe-Mn oxide that was intergrown with the organic inclusions

Background was subtracted using the software code LabSpec 6

Spectral artifacts from oxidation of the Fe-Mn oxide and thin section polymer.

BCO-DMO processing notes:

Adjusted column names to comply with database requirements
Merged 3 tables into 1 (based on wavenumbers).
Added location (lat/lon) of Atlantis Bank oceanic core complex

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1658031	NSF Division of Ocean Sciences

Instruments

Raman Microscope

Supplied Name: Horiba LabRam HR confocal Raman system

Supplied Description:

Instrument Type

Generic Name: Raman Microscope

Generic Description:

The Raman microscope is a laser-based microscopic device used to perform Raman spectroscopy. The Raman microscope begins with a standard optical microscope, and adds an excitation laser, laser rejection filters, a spectrometer or monochromator, and an optical sensitive detector such as a charge-coupled device (CCD), or photomultiplier tube, (PMT). One example is the XploRA confocal Raman microscope (information from the manufacturer).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Shift	Raman shift	reciprocal centimeter (cm-1)	wave_stats
Intensity	Raman Intensity	arbitrary units	wave_stats
Wavenumber	Wavenumbers	reciprocal centimeter (cm-1)	wave_stats
Latitude	Latitutde of sampling location	decimal degrees	lat
Longitude	Longitude of sampling location	decimal degrees	lon

Database

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Dataset: IODP360 - Raman Spectra
Deployment: IODP-360

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: IODP360 - Raman SpectraDeployment: IODP-360

Dataset acquisition description

Dataset Processing Description

Dataset: IODP360 - Raman Spectra
Deployment: IODP-360