The Paleocene/Eocene boundary was recovered for the first time in diatom-bearing sediments at Broken Ridge, Site 752. Diatom assemblages are documented throughout the 180-m-thick sequence of upper Pal
The Pinal terrane of southern Arizona has been characterized as a Palaeoproterozoic forearc/subduction complex (Meijer 2014). It contains granitoid plutons and metavolcanic rocks with arc affinities t
