Results 1 to 10 of about 40,664 (260)

Statistical techniques in biostratigraphy [PDF]

open access: bronzeNature, 1977
Concepts and Methods of Biostratigraphy. Edited by Erle G. Kauffman and Joseph E. Hazel. Pp. xiii + 658. (Wiley: New York, London and Toronto, 1977.) £26.25; $44.45.
A. Hallam
openalex   +3 more sources

Biostratigraphy of the Pabdeh Formation based on planktonic foraminifera in the Tang-e-Chogan section in Interior Fars, Zagros Basin [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2023
The biostratigraphy of the marly-limestone Pabdeh Formation has been studied in a section located in the Interior Fars (folded Zagros). Five assemblage biozones of plankton foraminifera with Early Eocene to Late Eocene age were identified in the studied ...
Zahra Khaloasgari   +2 more
doaj   +1 more source

Integration of Darriwilian (Middle Ordovician) δ13Corg chemostratigraphy with graptolite biostratigraphy in the classical Röstånga area in northwestern Scania (southern Sweden) [PDF]

open access: yesEstonian Journal of Earth Sciences, 2020
The largely covered Middle Ordovician succession in the classic geological Röstånga area in northwestern Scania has not been studied for some 80 years.
Stig M. Bergström   +4 more
doaj   +1 more source

The Truong Son, Loei-Phetchabun, and Kontum Terranes in Indochina: Provenance, Rifting, and Collisions

open access: yesFrontiers in Earth Science, 2021
The three main regions of Indochina are defined as the Truong Son, Loei-Phetchabun, and Kontum terranes. The aim of this review is to integrate numerous petrological studies with sedimentary, palaeontological, and provenance studies in order to construct
Clive Burrett   +3 more
doaj   +1 more source

The North Pacific Diatom Species Neodenticula seminae in the Modern and Holocene Sediments of the North Atlantic and Arctic

open access: yesGeosciences, 2020
The paper presents micropaleontological information and observations of the North Pacific diatom species Neodenticula (N.) seminae (Simonsen and Kanaya) Akiba and Yanagisawa in the surface and Holocene sediments from the North Atlantic, Nordic, and ...
Alexander Matul, Galina Kh. Kazarina
doaj   +1 more source

The Silurian Section of the Valle syncline (Sierra Norte de Sevilla UNESCO Global Geopark, Spain) as an International Standard for Graptolite Biostratigraphy [PDF]

open access: yesGeoconservation Research, 2021
The Paleozoic succession of the Sierra Norte de Sevilla UNESCO Global Geopark (Ossa Morena Zone of the Iberian Massif, SW Spain) includes a nearly complete Silurian succession, ca. 150 m thick, deposited in an outer shelf setting. In the core part of the
Juan Carlos Gutierrez-Marco   +2 more
doaj   +1 more source

Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Cambrian Series 2 shelly fossils from thick carbonate successions in East Antarctica have received limited systematic treatment through the 20th century.
Thomas M. Claybourn   +5 more
doaj   +1 more source

New biostratigraphically important chitinozoans from the Kukruse Regional Stage, Upper Ordovician of Baltoscandia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
Three new chitinozoan species, Conochitina savalaensis, Conochitina viruana and Belonechitina intonsa, are described. All these species are stratigraphically restricted to the Kukruse age (lowermost Sandbian, Laufeldochitina stentor chitinozoan Zone) and
Jaak Nõlvak, Garmen Bauert
doaj   +1 more source

Testing the stratigraphic consistency of Pleistocene microfossil bioevents identified on the Alpha and Lomonosov Ridges, Arctic Ocean

open access: yesArctic, Antarctic, and Alpine Research, 2021
Two different biostratigraphic approaches are used to identify Marine Isotope Stage 11 (MIS 11) in Arctic Ocean sediments. On the Lomonosov Ridge, globally calibrated nannofossil bioevents constrain the age of sediments back to MIS 13 (Core LOMROG12-3PC).
Flor Vermassen   +4 more
doaj   +1 more source

A New Calcareous Nannofossil Record from the Lower Jurassic of Kermanshah, Western Iran: Implications for Biostratigraphy and Evolutionary Reconstructions

open access: yesGeosciences, 2022
Calcareous nannofossils are used here for the first time in order to establish a precise biostratigraphic framework for the Kermanshah Radiolarite Formation, an outcropping in Western Iran. The new data presented here challenge the previous tentative age
Asad Abdi   +2 more
doaj   +1 more source

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