Results 1 to 10 of about 2,106 (218)

The Ordovician System: From overlapping unit stratotypes to Global Boundary Stratotype Sections and Points [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
For nearly a century the Ordovician System was hidden as Murchison and Sedgwick tussled over the overlapping ground between their Silurian and Cambrian systems.
David A. T. Harper   +2 more
doaj   +2 more sources

Paleoceanography and dinoflagellate cyst stratigraphy across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the Chiba composite section, Japan [PDF]

open access: yesProgress in Earth and Planetary Science, 2021
A dinoflagellate cyst record from the highly resolved Chiba composite section in Japan has been used to reconstruct sea-surface paleoceanographic changes across the Lower–Middle Pleistocene Subseries (Calabrian–Chibanian Stage) boundary at the global ...
Eseroghene J. Balota   +4 more
doaj   +2 more sources

In search of the Palaeogene-Neogene Boundary Stratotype

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2020
In publishing the first results of its research works (Giornale di Geologia, vol. XLIV, fasc. l-Il, 1981 ) the Palaeogene/Neogene Boundary Working Group, while not having defined any final object yet, has nonetheless enabled us to: a) recall attention to
R. GELATI , F. F. STEININGER
doaj   +2 more sources

Ice-volume-forced erosion of the Chinese Loess Plateau global Quaternary stratotype site [PDF]

open access: yesNature Communications, 2018
A basic requirement for reconstructing past environmental change is accurate understanding of sediment age. Here, the authors show that the interpretation of a benchmark archive in China has been inaccurate, and that ice volume primarily controls desert ...
T. Stevens   +7 more
doaj   +2 more sources

The upper Bedoulian and lower Gargasian Ostracoda of the Aptian stratotype: Taxonomy and biostratigraphic correlation

open access: yesCarnets De Geologie, 2007
In the vicinity of Saint-Saturnin-lès-Apt (Vaucluse, SE France), which is included in the area of the historic Aptian stratotype of Apt-Gargas, are four sections in a succession that permits the study in a very detailed and continuous way of the last ...
Jean-François Babinot   +2 more
exaly   +2 more sources

The Aptian Marls of La Tuilière (Luberon UNESCO Global Geopark, France), a Historical Stratotype [PDF]

open access: yesGeoconservation Research, 2021
The historical stratotype of the Aptian Stage (Cretaceous) was defined in the Luberon UNESCO global geopark in the middle of the 19th century. Due to excessive urbanization launched in the early sixties, the best outcropping conditions are those found at
Stephane Legal, Pauline Coster
doaj   +1 more source

Establishing the Lower-Middle Jurassic Boundary in the UNESCO Global Geopark Molina & Alto Tajo (Central Spain) [PDF]

open access: yesGeoconservation Research, 2021
The Global Boundary Stratotype Section and Point (GSSP) of the Aalenian Stage (base of the Middle Jurassic), was established in Fuentelsaz (Central Spain) by the International Commission on Stratigraphy (ICS) of the International Union of Geological ...
Antonio Goy   +2 more
doaj   +1 more source

A short history of the Ordovician System: from overlapping unit stratotypes to global stratotype sections and points [PDF]

open access: yesGeological Society, London, Special Publications, 2023
Abstract The Ordovician System was introduced by Charles Lapworth as a solution to the overlapping unit stratotypes loosely defined by Adam Sedgwick, for the Cambrian, and Roderick Murchison, for the Silurian. The Ordovician has emerged as one of the longest and most significant of the geological periods.
Harper, David   +2 more
openaire   +5 more sources

Description of the stratotype section and proposal of hypostratotype section of the Lower Cretaceous Quiricó formation, São Francisco Basin, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2021
The Quiricó Formation presents an abundant and diversified fossil record, and is the only formation from the Cretaceous of the São Francisco basin with the occurrence of ostracodes.
AMANDA M. LEITE, DERMEVAL A. DO CARMO
doaj   +1 more source

Sections comparison of the Sigov Formation of the Ust-Yenisey and Turukhan-Eloguy regions of the Tazo-Kheta structural-facies area [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
The article deals with issues of identification of the Sigov Formation (Upper Jurassic) within the Tazo-Kheta structural-facies area (northeastern Arctic region of Western Siberia).
Borisov E.V.
doaj   +1 more source

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