S
Silvia Ortiz
Researcher at University of the Basque Country
Publications - 39
Citations - 1077
Silvia Ortiz is an academic researcher from University of the Basque Country. The author has contributed to research in topics: Foraminifera & Stratotype. The author has an hindex of 17, co-authored 39 publications receiving 961 citations. Previous affiliations of Silvia Ortiz include University College London & University of Zaragoza.
Papers
More filters
Journal ArticleDOI
The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain
Birger Schmitz,Victoriano Pujalte,Eustoquio Molina,Simonetta Monechi,Xabier Orue-Etxebarria,Robert P. Speijer,Laia Alegret,Estibaliz Apellaniz,Ignacio Arenillas,Marie-Pierre Aubry,Juan Ignacio Baceta,William A. Berggren,Gilen Bernaola,F. Caballero,Anne Clemmensen,Jaume Dinarès-Turell,Christian Dupuis,Claus Heilmann-Clausen,Asier Hilario Orús,Robert Knox,M. Martín-Rubio,Silvia Ortiz,Aitor Payros,Maria Rose Petrizzo,Katharina von Salis,Jorinde Sprong,Etienne Steurbaut,Erik Thomsen +27 more
TL;DR: The global stratotype sections and points for the bases of the Selandian and Thanetian stages have been defined in the coastal cliff along the Itzurun Beach at the town of Zumaia in the Basque Country, northern Spain this paper.
Journal ArticleDOI
Extinction and recovery of benthic foraminifera across the Paleocene–Eocene Thermal Maximum at the Alamedilla section (Southern Spain)
TL;DR: A complete succession of lower bathyal-upper abyssal sediments was deposited across the Paleocene-Eocene Thermal Maximum (PETM) at Alamedilla (Betic Cordillera, Southern Spain), where the benthic foraminiferal turnover and extinction event associated with the negative carbon isotope excursion (CIE) across the PETM have been investigated as discussed by the authors.
Journal ArticleDOI
The Paleocene–Eocene thermal maximum: New data on microfossil turnover at the Zumaia section, Spain
Laia Alegret,Silvia Ortiz,Silvia Ortiz,Xabier Orue-Etxebarria,Gilen Bernaola,Juan Ignacio Baceta,Simonetta Monechi,Estibaliz Apellaniz,Victoriano Pujalte +8 more
TL;DR: In this paper, the benthic foraminiferal turnover and extinction event associated with the negative carbon isotope excursion (CIE) across the Paleocene-Eocene Thermal Maximum (PETM) is analyzed in the Zumaia section (Spain), one of the most complete and expanded deep-water sequences known worldwide.
Journal ArticleDOI
The Global Stratotype Section and Point (GSSP) for the base of the Lutetian Stage at the Gorrondatxe section, Spain
Eustoquio Molina,Laia Alegret,Estibaliz Apellaniz,Gilen Bernaola,F. Caballero,Jaume Dinarès-Turell,Jan Hardenbol,Claus Heilmann-Clausen,Juan C. Larrasoaña,Hanspeter Luterbacher,Simonetta Monechi,Silvia Ortiz,Xabier Orue-Etxebarria,Aitor Payros,Victoriano Pujalte,Francisco J. Rodríguez-Tovar,Flavia Tori,Josep Tosquella,Alfred Uchman +18 more
TL;DR: The GSSP for the base of the Lutetian Stage (early/middle Eocene boundary) is defined at 167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain; 43o22'46.47" N, 3o 00' 51.61" W). This dark marly level coincides with the lowest occurrence of the calcareous nannofossil Blackites inflatus (CP12a/b boundary), is in the middle of polarity Chron C21
Journal ArticleDOI
Palaeoenvironmental turnover across the Palaeocene/Eocene boundary at the Stratotype section in Dababiya (Egypt) based on benthic foraminifera
TL;DR: The first detailed analysis of Palaeocene-Eocene benthic foraminifera from Dababiya, in order to infer the palaeoenvironmental turnover across the P/E boundary was presented in this paper.