VelingaraData : geophysical and zircon data acquired in the Velingara circular depression (Senegal)
The Velingara dataset gathers geophysical and zircon data acquired in the Velingara circular depression (Senegal).
In March 2022, a field campaign was performed in this depression, since it is thought to be an impact structure. Magnetic and gravity field observations were done, as well as sampling.
Several zircon grains of sample VEL29A were analysed by LA-ICP-MS, given an age of 550 Ma.
Simple
- Date (Publication)
- 2021-04-02T08:00:00
- Citation identifier
- http://dataset.osupytheas.fr/geonetwork/srv/resourcesyq-crg-20230926
- Purpose
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The Velingara dataset gathers geophysical and zircon data acquired in the Velingara circular depression (Senegal).
- Status
- Completed
- Maintenance and update frequency
- As needed
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GEMET - Concepts, version 2.4
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geology
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geophysics
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GEMET - INSPIRE themes, version 1.0
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Geology
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Continents, countries, sea regions of the world.
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France
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- Theme
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geophysics
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impact structure
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zircon
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- Access constraints
- Copyright
- Use constraints
- otherRestictions
- Spatial representation type
- Vector
- Denominator
- 5000
- Language
- English
- Character set
- UTF8
- Topic category
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- Environment
- Geoscientific information
- Begin date
- 2022-01-01
- End date
- 2024-12-25
- Description
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Sénégal
- Supplemental Information
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Sénégal
- Reference system identifier
- WGS 1984
- Distribution format
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CSV files
(
1.0
)
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CSV files
(
1.0
)
- OnLine resource
- velingara-magnetic ( OGC:WMS )
- OnLine resource
- velingara-gravimetry ( OGC:WMS )
- OnLine resource
- raw data from velingara ( WWW:DOWNLOAD-1.0-http--download )
- OnLine resource
- Digital Object Identifier (DOI) ( DOI )
- Hierarchy level
- Dataset
- Statement
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Ground magnetic and gravimetric field observations were performed during the survey of the Velingara depression (Senegal), together with dGPS monitoring.
We also collected samples, from which about 5,00 zircon grains were analysed by SEM-EBDS, and some of them were dated by LAICPMS.
The dataset includes Bouguer gravity data (anomaly and detrended anomaly), magnetic field anomaly data (+ detrended), as well as a table with all LA-ICP-MS results.
- Magnetic Field Data: ground survey using MMPOS-1 magnetometer at ~2 m
height, and associated GPS device
- Gravimetric Data: ground survey using a Scintrex CG-5 gravimeter, and
a dGPS system for precise positioning
- LAICPMS Data: U-Pb analysis of Velingara zircon grains by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), using a RESOlution-SE incorporating a COMPex 102 excimer laser, coupled
to an Agilent 8900 QQQ ICP-MS at the GeoHistory Facility in the John de Laeter Centre at Curtin University, Australia
- File identifier
- yq-crg-20230926 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2023-09-27T11:13:05
- Metadata standard name
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ISO 19115:2003/19139
- Metadata standard version
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1.0