Keywords: Aluminium oxide; Aluminium oxide, standard deviation; Calcium number; Calcium number, standard error; Calcium oxide; Calcium oxide, standard deviation; crystallization temperature; Depth above Mohorovicic discontinuity; EMPA; EPMA; Event label; foliated gabbro; fossile ocean crust; gabbro; Geochemistry; Grains; HAND; ICDP; in situ data; International Continental Scientific Drilling Program; Iron oxide, FeO; Iron oxide, FeO, standard deviation; LA-ICPMS; LA-ICP-MS; layered gabbro; Magnesium oxide; Magnesium oxide, standard deviation; major and trace element data; major and trace elements; major element analysis; major elements; Manganese oxide; Manganese oxide, standard deviation; microscopy; Mineral compositions; mineral data; modal proportions; Number, total; ocean crust accretion; ocean crust formation; oceanic crust; olivine; OM10-A13; OM10-A14b; OM10-A16; OM10-A17; OM10-A17-1; OM10-A18; OM10-A18-1; OM10-A18-2a; OM10-A19; OM10-A20; OM10-A26; OM10-A27; OM10-A28; OM10-A30; OM10-A32; OM11-A21A; OM11-A22; OM11-A26; OM11-A29-2; OM12-025; OM12-038; OM12-039; OM12-040; OM12-044; OM12-048; OM12-052; OM12-054; OM12-055; OM12-201; OM12-206; OM12-217; OM12-218; OM12-219; OM15-10; OM15-18; OM15-24; OM15-27; OM15-30; OM15-33; Oman; Oman Ophiolite; ophiolite; Petrography; Potassium oxide; Potassium oxide, standard deviation; rock description; Samail Ophiolite; Sample comment; Sampling by hand; Silicon dioxide; Silicon dioxide, standard deviation; Sodium oxide; Sodium oxide, standard deviation; Sum; Temperature; thin-section; Titanium dioxide; Titanium dioxide, standard deviation; trace- and major elements; trace element; trace elements; Wadi Gideah; Wadi Gideah Transect