Belo Julie jbelo@geomar.de GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 2025 Onshore correlation glass data for selected tephra units on São Miguel Island, Azores dataset https://doi.org/10.1594/PANGAEA.986777 2025-10-27T08:41:04 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. Belo Julie jbelo@geomar.de 2025 Major element glass data of marine tephras around São Miguel Island, Azores dataset publication series https://doi.org/10.1594/PANGAEA.986779 -25.82583 -25.81525 37.82025 37.88825 -25.820887666666664 37.846626666666666 2003-01-01T00:00:00 2020-01-01T00:00:00 VolClimA Volcanism - climate interaction: A test case from the Azores archipelago GEOMAR - Helmholtz Centre for Ocean Research Kiel GEOMAR http://www.geomar.de https://ror.org/02h2x0161 German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 509166013 Volcanism - climate interaction: A test case from the Azores archipelago (VolClimA) https://gepris.dfg.de/project/509166013 SaoMiguel_S2 S2- Risco Formation/ Sete Cidades 37.82025 -25.82583 2020-01-01T00:00:00 Hammer HAM SaoMiguel_S3 S3- Bretanha Formation/ Sete Cidades 37.83138 -25.821583 2020-01-01T00:00:00 Hammer HAM SaoMiguel_S4 S4- Bretanha Formation/ Sete Cidades 37.88825 -25.81525 2020-01-01T00:00:00 Hammer HAM SaoMiguel_SM1 SM1/ Fogo volcano 2003-01-01T00:00:00 Hammer HAM Vila Franco do Campo western border SaoMiguel_SM2 SM2/ Fogo volcano 2003-01-01T00:00:00 Hammer HAM Ribeira Chã coastal section SaoMiguel_SM3 SM3/ Furnas volcano 2003-01-01T00:00:00 Hammer HAM Praia Povoação SaoMiguel_SM4 SM4/ Furnas volcano 2003-01-01T00:00:00 Hammer HAM Furnas Caldera, southern rim 7751 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ S2-S4 analyzed 2020-11-20, SM1-SM4 analyzed 2020-05-21 Event label Event Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Event Sample code/label Sample label Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Sample label Sodium oxide Na2O % sodium oxide Na2O https://pubchem.ncbi.nlm.nih.gov/compound/73971 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Na2O [%] Potassium oxide K2O % potassium oxide http://purl.obolibrary.org/obo/CHEBI_88321 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 K2O [%] Iron oxide, Fe2O3 Fe2O3 % iron oxide http://purl.obolibrary.org/obo/CHEBI_50816 ferric oxide Fe2O3 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Fe2O3 [%] Silicon dioxide SiO2 % https://en.wikipedia.org/wiki/Silicon_dioxide silicon dioxide http://purl.obolibrary.org/obo/CHEBI_30563 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 SiO2 [%] Titanium dioxide TiO2 % https://en.wikipedia.org/wiki/Titanium_dioxide titanium dioxide http://purl.obolibrary.org/obo/CHEBI_32234 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 TiO2 [%] Magnesium oxide MgO % magnesium oxide http://purl.obolibrary.org/obo/CHEBI_31794 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 MgO [%] Calcium oxide CaO % https://en.wikipedia.org/wiki/Calcium_oxide calcium oxide http://purl.obolibrary.org/obo/CHEBI_31344 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 CaO [%] Manganese oxide MnO % manganese oxide Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 MnO [%] Aluminium oxide Al2O3 % aluminium oxide http://purl.obolibrary.org/obo/CHEBI_30187 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Al2O3 [%] Phosphorus pentoxide P2O5 % phosphorus oxide http://purl.obolibrary.org/obo/CHEBI_37349 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 P2O5 [%] Elements, total Total % total https://www.oxforddictionaries.com/definition/american_english/total Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 Total [%] Sodium oxide Na2O % sodium oxide Na2O https://pubchem.ncbi.nlm.nih.gov/compound/73971 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized Na2O [%] (normalized) Potassium oxide K2O % potassium oxide http://purl.obolibrary.org/obo/CHEBI_88321 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized K2O [%] (normalized) Iron oxide, Fe2O3 Fe2O3 % iron oxide http://purl.obolibrary.org/obo/CHEBI_50816 ferric oxide Fe2O3 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized Fe2O3 [%] (normalized) Silicon dioxide SiO2 % https://en.wikipedia.org/wiki/Silicon_dioxide silicon dioxide http://purl.obolibrary.org/obo/CHEBI_30563 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized SiO2 [%] (normalized) Titanium dioxide TiO2 % https://en.wikipedia.org/wiki/Titanium_dioxide titanium dioxide http://purl.obolibrary.org/obo/CHEBI_32234 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized TiO2 [%] (normalized) Magnesium oxide MgO % magnesium oxide http://purl.obolibrary.org/obo/CHEBI_31794 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized MgO [%] (normalized) Calcium oxide CaO % https://en.wikipedia.org/wiki/Calcium_oxide calcium oxide http://purl.obolibrary.org/obo/CHEBI_31344 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized CaO [%] (normalized) Manganese oxide MnO % manganese oxide Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized MnO [%] (normalized) Aluminium oxide Al2O3 % aluminium oxide http://purl.obolibrary.org/obo/CHEBI_30187 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized Al2O3 [%] (normalized) Phosphorus pentoxide P2O5 % phosphorus oxide http://purl.obolibrary.org/obo/CHEBI_37349 Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized P2O5 [%] (normalized) Elements, total Total % total https://www.oxforddictionaries.com/definition/american_english/total Dimensionless Ratio ψ Electron microprobe JEOL JXA-8200 Chemical property sensors electron microprobes http://vocab.nerc.ac.uk/collection/L05/current/LAB08/ Schindlbeck-Belo Julie jbelo@geomar.de 0000-0001-5865-3272 normalized Total [%] (normalized) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable geomar author105298 award4413 curlevel30 event3302247 event3302248 event3302249 event3302250 event3302251 event3302252 event3302253 funder20472 geocode1599 geocode1600 geocode1601 inst20147 license21 method11122 method7871 param1825 param4904 param702 param703 param704 param705 param706 param707 param708 param709 param790 param811 pi71453 project5053 refds986779 term1073224 term1073388 term1074034 term1074050 term1074058 term1074190 term1074191 term2299466 term242 term2632269 term38253 term40753 term40802 term43794 term49257 term67625