de.pangaea.dataset986777 und dataset PANGAEA
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https://www.pangaea.de/ information pointOfContact 2026-07-10T14:44:20Z https://doi.pangaea.de/10.1594/PANGAEA.986777 <gco:CharacterString>Onshore correlation glass data for selected tephra units on São Miguel Island, Azores</gco:CharacterString> 2025-10-27T08:41:04 publication https://doi.org/10.1594/PANGAEA.986777 Belo, Julie
jbelo@geomar.de
author PANGAEA
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https://www.pangaea.de/ information publisher tableDigital A total of 44 gravity cores were collected in the Azores region in 2017, during the R/V Meteor cruise M141/1. Based on their length, content in tephra layers, and spatial distribution around São Miguel, 22 cores have been carefully selected as the most representative to gain insights on the volcanic history and the depositional marine environment around the islands of the eastern group of the archipelago. In total, 454 samples from 350 ash- or pumice/scoria/lapilli- bearing horizons were examined. Additionally, we present glass data for 26 onshore deposits sampled on São Miguel Island. Subaerial lapilli samples were cleaned in an ultrasonic bath and then crushed. All samples and the previously crushed lapilli samples were wet-sieved into different grain size fractions. The 125-63 microns fraction was embedded with epoxy in pre-drilled acrylic mounts and polished for geochemical micro-analyses. Major and minor element compositions of glass shards were conducted using a JEOL JXA 8200 wavelength dispersive EMP at GEOMAR Helmholtz-Centre for Ocean Research, Kiel, Germany. Every 60 individual glass shards analyses were bracketed by a set of four standard analyses. We analyzed 15–25 single glass shards per sample. Outliers with totals below 92 wt.%, as well as accidental mineral analyses were removed from the dataset. completed Schindlbeck-Belo, Julie
jbelo@geomar.de
https://orcid.org/0000-0001-5865-3272 information principalInvestigator VolClimA Volcanism - climate interaction: A test case from the Azores archipelago theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -25.82583 -25.81525 37.82025 37.88825 2003-01-01T00:00:00 2020-01-01T00:00:00 S2-S4 analyzed 2020-11-20, SM1-SM4 analyzed 2020-05-21 Event label thematicClassification Sample code/label thematicClassification Sodium oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Potassium oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Iron oxide, Fe2O3 physicalMeasurement Electron microprobe JEOL JXA-8200 % % Silicon dioxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Titanium dioxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Magnesium oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Calcium oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Manganese oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Aluminium oxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Phosphorus pentoxide physicalMeasurement Electron microprobe JEOL JXA-8200 % % Elements, total physicalMeasurement Electron microprobe JEOL JXA-8200 % % Sodium oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Potassium oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Iron oxide, Fe2O3 physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Silicon dioxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Titanium dioxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Magnesium oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Calcium oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Manganese oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Aluminium oxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Phosphorus pentoxide physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % Elements, total physicalMeasurement Electron microprobe JEOL JXA-8200; normalized % % text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.986777?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: SaoMiguel_S2 (S2- Risco Formation/ Sete Cidades) * LATITUDE: 37.820250 * LONGITUDE: -25.825830 * DATE/TIME: 2020-01-01T00:00:00 * METHOD/DEVICE: Hammer 2020-01-01T00:00:00 EVENT LABEL: SaoMiguel_S3 (S3- Bretanha Formation/ Sete Cidades) * LATITUDE: 37.831380 * LONGITUDE: -25.821583 * DATE/TIME: 2020-01-01T00:00:00 * METHOD/DEVICE: Hammer 2020-01-01T00:00:00 EVENT LABEL: SaoMiguel_S4 (S4- Bretanha Formation/ Sete Cidades) * LATITUDE: 37.888250 * LONGITUDE: -25.815250 * DATE/TIME: 2020-01-01T00:00:00 * METHOD/DEVICE: Hammer 2020-01-01T00:00:00 EVENT LABEL: SaoMiguel_SM1 (SM1/ Fogo volcano) * DATE/TIME: 2003-01-01T00:00:00 * METHOD/DEVICE: Hammer Vila Franco do Campo western border 2003-01-01T00:00:00 EVENT LABEL: SaoMiguel_SM2 (SM2/ Fogo volcano) * DATE/TIME: 2003-01-01T00:00:00 * METHOD/DEVICE: Hammer Ribeira Chã coastal section 2003-01-01T00:00:00 EVENT LABEL: SaoMiguel_SM3 (SM3/ Furnas volcano) * DATE/TIME: 2003-01-01T00:00:00 * METHOD/DEVICE: Hammer Praia Povoação 2003-01-01T00:00:00 EVENT LABEL: SaoMiguel_SM4 (SM4/ Furnas volcano) * DATE/TIME: 2003-01-01T00:00:00 * METHOD/DEVICE: Hammer Furnas Caldera, southern rim 2003-01-01T00:00:00 Related to <gco:CharacterString>Major element glass data of marine tephras around São Miguel Island, Azores</gco:CharacterString> 2025-01-01 publication https://doi.org/10.1594/PANGAEA.986779 Belo, Julie
jbelo@geomar.de
author documentDigital