Dataset: Atlantic Sediment Petrography

Name: Atlantic sediment petrography analysis data from mult-corer samples collected in the Amazon Delta and Sierra Leone Rise during R/V Endeavor cruises EN-480 and EN-481 in 2010
Published: 2023-10-02
Keywords: Black carbon, sediments, Atlantic Ocean, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.908380.1

Spatial Extent: N:7.4353 E:-24.0106 S:4.2828 W:-47.4844

Temporal Extent: 2010-07-17 - 2010-08-13

Project:

Concentrations and source assessment of black carbon across tropical Atlantic air and sediment (Tropical Atlantic Black Carbon)

The Black Carbon Cycle: Budget and Fluxes of Black Carbon in South Atlantic Sediments (Black Carbon Cycle)

Principal Investigator:

Rainer Lohmann (University of Rhode Island, URI)

Student:

Kari Ann St. Laurent (University of Rhode Island, URI)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2023-10-02

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Atlantic sediment petrography analysis data from mult-corer samples collected in the Amazon Delta and Sierra Leone Rise during R/V Endeavor cruises EN-480 and EN-481 in 2010

Abstract:

These data include the sediment petrographic analysis for Amazon Delta and Sierra Leone Rise Sediments. These data were collected on multiple cruises in throughout the Atlantic; specifically, in the Amazon Delta (EN-480; July 2010) and Sierra Leone Rise (EN-481; August 2010). Sediments were collected using multi-corer and kept frozen until analysis. Sediments were analyzed quantitatively via microscopy by Dr. Bertrand Ligouis at the Laboratories for Applied Organic Petrology at the University of Tübingen, Germany. These data help better constrain pyrogenic carbon concentrations and accumulation rates into Atlantic sediments. These data were published in St.Laurent, et al. (2023).

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2023-10-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.908380.1	2023-10-06

Methods & Sampling

Sediment samples were collected via a 4-barrel multi-corer (R/V Endeavor, segmented into 1-2 cm sections, dried in a drying oven (35°C) and homogenized via mortar and pestle.

Instruments
Polished sediments were observed under a Leitz DMRX-MPVSP microscope photometer using a magnification up to 500X with reflected white light, uѵ fluorescence, plane-polarized light, and cross-polarized light.

Location:
Amazon Delta (approximately: 4 N, 47 W; 2400-3500m); Sierra Leone Rise (approximately: 7 N, 20 W; 2800-3800m).

BCO-DMO Processing

* Sheets "Sierra Leone Rise" and "Amazon Delta" of file "Atlantic Sediment Petro.xlsx" were imported into the BCO-DMO data system.
* The two tables were combined into one table with an additional column "Location" to capture the site name provided by the sheet name.
* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]
* Date format converted to ISO 8601 format.

Data Files

File
Atlantic Sediment Petrography filename: 908380_v1_atlantic_sediment_petography.csv (Comma Separated Values (.csv), 5.02 KB) MD5:a89909d86c73eb594a5886f42ce4dd71 Primary data table for 908380 version 1.

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1924191
NSF Division of Ocean Sciences	OCE-0851044

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
EN480	EN-480	2010-07-13	R/V Endeavor	Rainer Lohmann (Chief Scientist)	data info
EN481	EN-481	2010-07-25	R/V Endeavor	Rainer Lohmann (Chief Scientist)	data info

Instruments

Microscope - Optical

Supplied Name:

Supplied Description:

Polished sediments were observed under a Leitz DMRX-MPVSP microscope photometer using a magnification up to 500X with reflected white light, uѵ fluorescence, plane-polarized light, and cross-polarized light.

Instrument Type

Generic Name: Microscope - Optical

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/

Generic Description:

Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope".

Photometer

Supplied Name: Leitz DMRX-MPVSP microscope photometer

Supplied Description:

Instrument Type

Generic Name: Photometer

Generic Description:

An instrument that measures the light intensity emitted from a sample. [Definition Source: NCI]
Photometers are used to measure iIlluminance, irradiance, light absorption, scattering of light, reflection of light, fluorescence, phosphorescence, and luminescence.
[May include luminometers]

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Location	Location name	unitless	site
Site	Numerical sediment core name (includes cruise identifier)	unitless	core_id
Depth_Interval	sediment depth interval	cenitmeters below seafloor (cmbsf)	depth_bsf
Date	Core date in ISO 8601 format Format: %Y-%m-%d	unitless	date
Lat	Core sample location latitude	decimal degrees	lat
Lon	Core sample location longitude	decmial degrees	lon
Maceral_Group	Name of Maceral Group assessed	unitless	sample_descrip
Maceral_subgroup	Name of Maceral Subgroup assessed	unitless	sample_descrip
Volume_Percent	Volume of Maceral Subgroup detected. Percentage of Maceral Group detected per volume of sediment analyzed; trace indicates detected at a volume too low to quantify	percent (%)	no_bcodmo_term

Database

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Dataset: Atlantic Sediment Petrography