Results 1 to 10 of about 41,477 (255)

New data on middle and late Albian foraminifera and biostratigraphy of the northern palaeobiogeographical district of western Siberia [PDF]

open access: diamondGeologos, 2015
The present paper discusses foraminiferal assemblages and biozones established on the basis of studies of samples from ten borehole sequences of the Khanty-Mansiysk Horizon in the Samotlor area of the northern palaeobiogeographical district of western ...
Podobina Vera M.
doaj   +2 more sources

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

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 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

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

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

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

Morphology, biostratigraphy, and evolution of PliocenePleistocene diatoms Proboscia barboi.. [PDF]

open access: yes, 2019
Proboscia barboi and Proboscia curvirostris are two important diatom biostratigraphic markers from the high latitudes of the North Pacific and North Atlantic Oceans, dating back to the Pliocene-Pleistocene time.
Abrantes, Fatima   +3 more
core   +5 more sources

Conodont biostratigraphy of the Crawford Group, Southern Uplands, Scotland [PDF]

open access: yes, 2002
Extensive new conodont collections from the Crawford Group, the oldest succession in the Southern Uplands of Scotland, support the previously documented biostratigraphical ages for the included formations.
Armstrong, Howard A.   +3 more
core   +1 more source

SYNTHESIS OF CALCAREOUS NANNOFOSSIL EVENTS IN TETHYAN LOWER AND MIDDLE JURASSIC SUCCESSIONS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 1999
This paper is a synthesis of calcareous nannofossil biostratigraphy for the Lower and Middle Jurassic of the Mediterranean Province based on several sections from Northern and Central Italy.
EMANUELA MATTIOLI, ELISABETTA ERBA
doaj   +1 more source

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