Dataset: Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014

Abstract

Surrounded by extensive breakup volcanism on the margins, and the Iceland-Faeroes volcanic ridge, the magma-starved basin formed by the extinct Aegir Ridge is a major gap in the North Atlantic large igneous province, the latter created by the Iceland hotspot. Wide-angle seismic data show that the Aegir Ridge began creating moderately thick crust (8-11 km) the first 2-4 Myr spreading; but magma production quickly waned to form 3.5-6 km thick crust for the remaining spreading (51.4-25 Ma). This weak or non-existent hotspot influence despite extensive volcanism nearby provides a unique opportunity to learn about the dynamics of hotspot-rift interaction.  

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Variable Groups

Full Title

Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014

Identification Number

NSD2151

Authoring Entity

Name Affiliation
Mjelde, Rolf Department of Earth Science, UiB

Producer

Name Affiliation Abbreviation Role
Mjelde, Rolf Centre for Geobiology, UiB UiB Principal Investigator

Copyright

Copyright (C) 2014 Rolf Mjelde, Department of Earth Science, UiB

Funding Agency/Sponsor

Name Abbreviation Role Grant
The Research Council of Norway RCN 197152

Data Distributor

Name Affiliation Abbreviation
Norwegian Social Science Data Services NSD

Version

Date: 2015-02-05

Notes

Original data from Rolf Mjelde, Department of Earth Science, UiB are documented and prepared, first NSD-version.

Bibliographic Citation

"Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014". Data collected by Rolf Mjelde, Department of Earth Science, UiB. First NSD edition, Bergen 2015.

List of Keywords

Topic Classification

Time Period Covered

Start End Cycle
2010-05-01 2014-07-15

Date of Collection

Start End Cycle
2010-05-01 2014-07-15

Country

Norway  (NO)

Geographic Coverage

Country

Unit of Analysis

Other

Kind of Data

Experimental data

Time Method

Cross-sectional survey

Data Collector

Mjelde, Rolf, Department of Earth Science  (UiB)

Sampling Procedure

Marine seismic data, both zero-offset and wide angle data. Seismic data are in segy format, navigation data in ukooa format. Each instrument recorded four channels, stored in separate files. Channel 1, 2, and 3 are from orthogonally mounted 3-component seismometer recordings.
C.1: Vertical
C.2: Horizontal1
C.3: Horisontal2
C.4: Hydrophone

File naming follows this convention (example): p01.obs10.1.sgy (Profile.obs.channel)

Navigation data: p01.ukooa, p02.ukooa

Instrument locations have been relocated along line on the seafloor, based on direct arrival times. Instrument locations are shown by A1  or A2 in the first two columns, OBS number where the shot number is.

S1 and S2 indicate first and second profile, respecively.

Mode of Data Collection

Other

Location

Availability Status

NSD can in agreement with the Principal Investigator make data from "Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014" available when ordered.

Extent of Collection

189 data file(s); different formats can be made.

Restrictions

NSD can in agreement with the Principal Investigator make data from "Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014" available when ordered.

Citation Requirement

Users are obliged to refer to producer and distributor of the data by writing the following in forewords or footnotes in eventual publications:
"(Some of) the data applied in the analysis in this publication are based on "Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014". The survey was financed by The Reasearch Council of Norway. The data are provided by Rolf Mjelde, Department of Earth Science, UiB  and prepared and made available by the Norwegian Social Science Data Services (NSD). Neither Rolf Mjelde, Department of Earth Science, UiB, The Research Council of Norway nor NSD are responsible for the analysis/interpretation of the data presented here.

Deposit Requirement

Access to data is given on the condition that NSD gets a PDF-file of eventual reports that are written on the basis of the data. This to ensure best possible information of the use of data we distribute.

Conditions

Application for access to the data has to include name, institutional affiliation, project title, information about sources of financing and postal address. A declaration of secrecy has to be signed before delivery of data.

Disclaimer

Neither Rolf Mjelde, Department of Earth Science, UiB, The Research Council of Norway nor NSD are responsible for the analysis/interpretation of the data presented here.

Metadata Index

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