10.5880/fidgeo.2023.049 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2024-03-28 urn:ogc:def:crs:EPSG:4326 Database of mineral compositions within the lowermost oceanic crust accreted at fast-spreading ridges (Hess Deep, East Pacific Rise, IODP Leg 345) 2024-03-28 revision 2023-12-15 creation doi:10.5880/fidgeo.2023.049 Basch, Valentin Institute of Geoscience and Earth Resources, Italian National Research Council, Pavia, Italy author Sanfilippo, Alessio Institute of Geoscience and Earth Resources, Italian National Research Council, Pavia, Italy author Snow, Jonathan Louisiana State University, Geology & Geophysics Department, Baton Rouge, USA author Loocke, Matthew Louisiana State University, Geology & Geophysics Department, Baton Rouge, USA author Zanetti, Alberto Institute of Geoscience and Earth Resources, Italian National Research Council, Pavia, Italy author GFZ Data Services publisher This database contains mineral major and trace element compositions of gabbroic rocks composing the lower oceanic crust accreted at the East Pacific Rise and recovered at Hess Deep during IODP Leg 345 (Gillis et al., 2014a). Hess Deep is located at 2°15’N, 101°30’W in the Pacific Ocean, at the western tip of the Cocos-Nazca spreading centre, a westward-propagating oceanic ridge that progressively opens the oceanic lithosphere formed at the adjacent East Pacific Rise (Fig. 1a; Searle and Francheteau, 1986; Karson et al., 2002). Hess Deep is an East-West trending intraoceanic rift reaching 5200 mbsl (metres below sea level) at its deepest point (Fig. 1b,c). It is a tectonic window exposing a complete section of 1.3 Myr oceanic crust accreted at the fast-spreading East Pacific Rise (~130 mm/yr; Rioux et al., 2012; Rowan and Rowley, 2014), ranging from pillow basalts to sheeted dikes, isotropic gabbros, layered gabbros and troctolites, and upper mantle peridotites (e.g., Francheteau et al., 1990, 1992; Hekinian et al., 1993; Lissenberg et al., 2013). The gabbroic rocks included in this database are primitive in composition and range from olivine-rich troctolites to troctolites, olivine gabbros, olivine gabbronorites and gabbros. Basch, Valentin Institute of Geoscience and Earth Resources, Italian National Research Council, Pavia, Italy Post-doctoral researcher valentin.basch@gmail.com pointOfContact Fast-spreading ridges Lower crustal gabbros Mineral major elements Mineral trace elements Primary MORB melts EPOS multi-scale laboratories geochemistry and microscopy geochemistry data EARTH SCIENCE > OCEANS > MARINE VOLCANISM > MID-OCEAN RIDGES EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > CHEMICAL CONCENTRATIONS EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > IGNEOUS ROCKS > IGNEOUS ROCK FORMATION NASA/GCMD Earth Science Keywords publication CC BY 4.0 CC BY 4.0 to be updated DOI IsSupplementTo 10.1093/petrology/egab019 DOI Cites 10.1016/0012-821X(90)90160-Y DOI Cites 10.1016/0012-821X(92)90173-S DOI Cites 10.1038/nature12778 DOI Cites 10.1029/92JB02072 DOI Cites 10.1016/j.epsl.2012.11.012 DOI Cites 10.1111/j.1751-908X.1997.tb00538.x DOI Cites 10.1038/ngeo1378 DOI Cites 10.1093/gji/ggu056 DOI Cites 10.1007/s004100000236 DOI Cites eng geoscientificInformation Hess Deep tectonic window - IODP Site 345 -102 -101 2 2.5 http://doi.org/10.5880/fidgeo.2023.049 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information