Geochemical, isotopic, geochronological data and assimilation plus fractional crystallization model of The Pleiades Volcanic Field (Northern Victoria Land, Antarctica)

2026-05-25T10:32:05Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:79152024-05-03T16:31:32ZDOIDBDOIDB.FID

false4DOIDB.FID 10.5880/fidgeo.2024.001 Agostini, Samuele Samuele Agostini 0000-0002-2060-0359 Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy Leone, Noemi Noemi Leone Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Smellie, John L. John L. Smellie 0000-0001-5537-1763 Department of Geology, University of Leicester, Leicester, UK Rocchi, Sergio Sergio Rocchi 0000-0001-6868-1939 Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Geochemical, isotopic, geochronological data and assimilation plus fractional crystallization model of The Pleiades Volcanic Field (Northern Victoria Land, Antarctica) GFZ Data Services 2024 Northern Victoria Land Antarctica Volcanism Petrology Geochemistry Radiogenic Isotopes Assimilation plus Fractional Crystallization Geochronology West Antarctic Rift System Ice Thickness compound material > igneous material > igneous rock EARTH SCIENCE > PALEOCLIMATE EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > ISOTOPE RATIOS science > natural science > earth science > geology Agostini, Samuele Samuele Agostini 0000-0002-2060-0359 Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy Agostini, Samuele Samuele Agostini 0000-0002-2060-0359 Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy Leone, Noemi Noemi Leone Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Smellie, John L. John L. Smellie 0000-0001-5537-1763 Department of Geology, University of Leicester, Leicester, UK Rocchi, Sergio Sergio Rocchi 0000-0001-6868-1939 Dipartimento di Scienze della Terra, Università di Pisa, Pisa, Italy Laboratory of Geochronology and Radiogenic Isotope Geochemistry - Pisa1 (IGG-CNR, Italy) de06d05ebede454776df07c5de7f0c90 IGG-CNR Agostini, Samuele Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy 2024-01-16 Dataset 10.1029/2024GC011509 10.1007/s00445-009-0337-z 10.1016/j.gca.2006.06.1563 10.1016/S0016-7037(99)00204-5 10.1016/j.lithos.2015.06.006 http://www.stsn.it/serA108/10TESTOTamponi3B.pdf 10.1029/GM095p0429 CC BY 4.0 This dataset presents a set of geographical, geochemical and isotopic data, microphotos of thin sections and geochemical binary variation diagrams of sixteen samples of volcanic rocks collected in The Pleiades Volcanic Field, Northern Victoria Land, Antarctica (≈ 72° 42’ S; 165° 43’ E), made up of some 20 monogenetic, partly overlapping scoria and spatter cones, erupted in the last 900 ka, cropping out from the ice close to the head of Mariner Glacier.

First two files of dataset (kmz files) contain locations of volcanic centres of The Pleaides Volcanic Fiels and the locations of the collected samples.

File #3 contains analytical results of full major element, trace element and radiogenic (Sr, Nd, Pb) isotopic data of collected samples.

File #4 contains analytical details of Ar-Ar geochronological data.

File #5A and 5B contains modelling results, respectively, of major elements and trace elements-Sr isotope ratios of Assimilation plus Crystal Fractionation (AFC) applied to selected samples of The Pleiades Volcanic Field.

Other files are images containing high-resolution pictures collected through optical microscopy of thin sections of collected samples showing their most important petrographic features and binary geochemical diagrams of variation of major elements and selected trace elements against SiO2 (wt%).

This data are supplement to a manuscript currently submitted to G3 – Geochemistry, Geophysics, Geosystems, and are used to describe the main petrographic and geochemical features of the volcanic products outcropping at the Pleiades, define the characters of their mantle source, to define their evolutionary patterns. Through these data, we observed an unusual fractionation trend for this kind of volcanic fields, with a large assimilation rate of crustal material, ane we hypothesize a role of the thick-ice cap able to suppress the eruption potential and to increase the residence times of magma in crustal chambers.

NVL, Antarctica, 900 ka-present 165.35 165.8 -72.76 -72.6 Ministero dell’Istruzione, dell’Università e della Ricerca http://dx.doi.org/10.13039/501100003407 PNRA2013/AZ2.07 EPOS JRU ITALIA