Results 81 to 90 of about 6,911 (176)

Le stratotype de l'Hettangien : une coupe protégée, d'autres sites à préserver... [PDF]

open access: yes, 2013
Hettangian stratotype shows an example of preservation and valorisation of a scientifical historical place. Earth Story is understood thanks to geological heritage; this heritage is very vulnerable.
Hanzo, Micheline
core  

Integrated stratigraphy and astronomical calibration of the Serravallian/Tortonian boundary section at Monte Gibliscemi (Sicily, Italy) [PDF]

open access: yes, 1999
Results are presented of an integrated stratigraphic (calcareous plankton biostratigraphy, cyclostratigraphy and magnetostratigraphy) study of the Serravallian=Tortonian (S=T) boundary section of Monte Gibliscemi (Sicily, Italy).
Hilgen, F.J.   +4 more
core   +1 more source

Unidades litoestratigráficas do Ordovícico da região de trás-os-Montes (Zona Centro-Ibérica, Portugal) [PDF]

open access: yes, 2005
A recente realizacão de trabalhos, centrados no estabelecimento da bioestratigrafia do Ordovícico do nordeste de Portugal (Zona Centro Ibérica), conduziu a uma profunda revisão litoestratigráfica destes materiais, à luz dos requerimentos ...
Coke, Carlos   +3 more
core  

CALCAREOUS PLANKTON HIGH RESOLUTION BIO-MAGNETOSTRATIGRAPHY FOR THE LANGHIAN OF THE MEDITERRANEAN AREA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2008
High-resolution quantitative and qualitative analyses of the planktonic foraminifer and calcareous nannofossil content have been carried out on three Middle Miocene sections, from the Mediterranean area. Such sections (Cretaccio section, Tremiti Islands,
AGATA DI STEFANO   +9 more
doaj   +1 more source

Early Aptian δ¹³C and manganese anomalies from the historical Cassis-La Bédoule stratotype sections (S.E. France): relationship with a methane hydrate dissociation event and stratigraphic implications

open access: yesCarnets de Géologie, 2005
Comparison of oxygen and carbon isotope and manganese evolution curves in bulk carbonate from the historical Bedoulian stratotype (Cassis-La Bédoule area, Provence, France) reveals an important geochemical event (negative δ¹³C and high Mn content ...
Tronchetti Guy   +7 more
doaj  

THE GELASIAN STAGE: A PROPOSAL OF A NEW CHRONOSTRATIGRAPHIC UNIT OF THE PLIOCENE SERIES

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
A new Stage, the Gelasian, is proposed as the third upper subdivision of the Pliocene Series. The GSSP of the base of the Gelasian Stage and of the Middle Pliocene-Upper Pliocene boundary is coincident with a "sapropel" level which outcrops in the Monte ...
DOMENICO RIO   +2 more
doaj   +1 more source

The Global Stratotype Sections and Points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages at Zumaia, Spain [PDF]

open access: yes, 2011
The global stratotype sections and points for the bases of the Selandian (Middle Paleocene) and Thanetian (Upper Paleocene) stages have been defined in the coastal cliff along the Itzurun Beach at the town of Zumaia in the Basque Country, northern Spain.
Alegret, Laia   +27 more
core   +1 more source

Sedimentology and magnetic susceptibility of the Couvin Formation (Eifelian, South Western Belgium): Carbonate platform initiation in a hostile world [PDF]

open access: yes, 2007
The Eifelian of Belgium is mainly characterised by a mixed siliciclastic-carbonate sedimentation on a ramp profile. In this context, the Couvin Formation is the more important and remarkable exception.
Boulvain, F., Mabille, C.
core  

The Quaternary of Poland and its stratigraphic classification

open access: yesGeographia Polonica
Quaternary studies in Poland require an improved integration of lithostratigraphy, biostratigraphy, chronostratigraphy, geochronology, magnetostratigraphy, climatostratigraphy and isotope stratigraphy.
Leszek Marks, Zdzisław Jary
doaj   +1 more source

Conodonts from a potential Eifelian/Givetian Boundary Stratotype at jbel Ou Driss, southern Ma’der, Morocco [PDF]

open access: yes, 1989
Conodonts from a section at Jbel Ou Driss in the Ma'der (pre-Sahara of Morocco) with neritic and pelagic megafaunas, are studied in an attempt to define the Eifelian/Givetian boundary. The conodont succession ranges from the T. kockelianus Zone into the
Bultynck, P.
core  

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