Results 21 to 30 of about 2,786 (210)

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

MEASURED SECTION FOR THE POSSIBLE STRATOTYPE OF THE MIRI FORMATION, AT MIRI HILL, NORTH SARAWAK, MALAYSIA [PDF]

open access: yesGeological Behavior, 2018
The Miri Formation is continuously studied by many researchers in various aspects and disciplines in geology due to the important petroleum reservoir since the period of production in 1920-1941.
Muhd Nur Ismail Abdul Rahman   +1 more
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

The Global Stratotype Section and Point (GSSP) for the base of the Holocene Series/Epoch (Quaternary System/Period) in the NGRIP ice core [PDF]

open access: yes, 2008
The Greenland ice core from NorthGRIP (NGRIP) contains a proxy climate record across the Pleistocene– Holocene boundary of unprecedented clarity and resolution.
Rasmussen, Sune Olander   +48 more
core   +2 more sources

High resolution carbon isotope stratigraphy of the basal Silurian stratotype (Dob's Linn, Scotland) and its global correlation [PDF]

open access: yes, 1997
Since its designation as the Global Stratotype Section and Point (GSSP) for the base of the Silurian System, the choice of Dob's Linn, Southern Scotland, has received criticism due to the difficulties of relating its well constrained graptolite ...
Marshall, J.D.   +10 more
core   +1 more source

The early Katian (Late Ordovician) reefs near Saku, northern Estonia and the age of the Saku Member, Vasalemma Formation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2014
Reefs developed simultaneously during the latest Sandbian/earliest Katian global Guttenberg Isotopic Carbon Excursion (GICE) in several places across Baltoscandia.
Björn Kröger   +4 more
doaj   +1 more source

Foraminifers in the Holkerian Stratotype, regional substage in Britain : key taxa for the Viséan subdivision [PDF]

open access: yes, 2022
Foraminiferal revision of the Holkerian Stratotype of Britain at Barker Scar, Holker Hall, south Cumbria, UK, allows the subdivision of the section into the Cf4δ, Cf5α and Cf5β subzones (the latter being further subdivided into lower Cf5β1 and upper ...
Cozar, Pedro   +2 more
core   +3 more sources

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

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. The Ordovician is, in fact, one of the longest of the geological periods, characterised by major magmatic and plate tectonic activity; the roles of microcontinents and volcanic archipelagos ...
David A. T. Harper   +2 more
openaire   +1 more source

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