Results 51 to 60 of about 429 (178)
• Chapter 1. The Aalenian-Bajocian (Middle Jurassic) of the Digne area • Chapter 2. The Global Boundary Stratotype Sections and Points (GSSP) of the Hauterivian: La Charce section (Drôme, France, Vocontian Basin) • Chapter 3.
Mattioli Emanuela +5 more
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GIVETIAN–FRASNIAN BOUNDARY CONODONTS FROM KERMAN PROVINCE, CENTRAL IRAN
The Middle - Late Devonian boundary is investigated based on twenty-two conodont species and subspecies from three sections in the north and west of Kerman, southeastern central Iran.
HOSSEIN GHOLAMALIAN +4 more
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About the stratigraphic position of the Lower Aptian Roloboceras hambrovi (Ammonoidea) level
In the stratotype of the Lower Aptian substage the position of the assemblage that includes Roloboceras spp. and Megatyloceras spp. has been clearly established as being in the middle part of the upper Bedoulian. Some authors have erected this horizon as
Conte Gabriel +3 more
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The GSSP Method of Chronostratigraphy: A Critical Review
The use of boundary stratotypes to define chronostratigraphic units began in the 1960s, and, in the 1980s, these were called Global Stratotype Sections and Points (GSSPs). Approximately two-thirds of the GSSPs of the bases of the Phanerozoic stage (71 of
Spencer G. Lucas
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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
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The varved succession of Crawford Lake, Milton, Ontario, Canada as a candidate Global boundary Stratotype Section and Point for the Anthropocene series. [PDF]
McCarthy FM +28 more
europepmc +1 more source
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
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One of the significant results of the multidisciplinary investigations carried out during recent years in the Lower Aptian historical stratotype of the Cassis-La Bédoule region (South-Eastern France) was a proposal to update the local Upper Barremian ...
Ropolo Pierre +4 more
doaj
THE GELASIAN STAGE: A PROPOSAL OF A NEW CHRONOSTRATIGRAPHIC UNIT OF THE PLIOCENE SERIES
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
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