Results 11 to 20 of about 1,144 (173)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+10 more sources

Volcanogenic Turonian and epiclastics of senonian in the Timok magmatic complex between Bor and the Tupižnica mountain, eastern Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2005
In the light of the findings presented in this paper, among the volcanic products of the Upper Cretaceous, referred to as "the first volcanic phase" (Drovenik, 1961), two lithostratigraphic units can be singled out within the Timok Magmatic Complex (TMC):
Đorđević Miodrag
doaj   +1 more source

Stripping back the modern to reveal the Cenomanian–Turonian climate and temperature gradient underneath [PDF]

open access: yesClimate of the Past, 2020
During past geological times, the Earth experienced several intervals of global warmth, but their driving factors remain equivocal. A careful appraisal of the main processes controlling past warm events is essential to inform future climates and ...
M. Laugié   +6 more
doaj   +1 more source

Study of main planktonic foraminifera(Turonian-Santonian) in Kopeh-Dagh sedimentary environment, NE Iran [PDF]

open access: yesSustainable Earth Trends, 2021
In order to study the fossil contents of the Abderaz Formation for biostratigraphical purposes the 500 meters thick section was sampled at type section.
Meysam Shafiee Ardestani   +1 more
doaj   +1 more source

BIOSTRATIGRAPHY AND DEPOSITIONAL ENVIRONMENT OF THE OIL SHALE DEPOSIT IN THE ABAKALIKI FOLD BELT, SOUTHEASTERN NIGERIA; pp. 99–125 [PDF]

open access: yesOil Shale, 2010
The oil shale deposit in the Abakaliki anticlinorium has not been demarcated. The present study focused on the age, correlation and depositional environ­ment of the oil shale using abundance, planktonic/benthonic ratio and species diversity of ...
O. A. EHINOLA
doaj   +1 more source

High-resolution calcareous nannofossil biostratigraphy and facies of Nimar Sandstone Formation (Bagh Group), central India and its bearing on Oceanic Anoxic Event 2

open access: yesJournal of the Palaeontological Society of India, 2023
It is proposed to consider Narmada Valley Late Cretaceous sequences in three sectors with proper selection of stratotype in each sector: Eastern Sector: comprising of Lameta group of rocks with type area in Jabalpur area, essentially laid down in ...
Syed A. Jafar
doaj   +1 more source

Turonian Radiolarians from Karnezeika, Argolis Peninsula, Peloponnesus (Greece) [PDF]

open access: yesEclogae Geologicae Helvetiae, 2006
Near Karnezeika a roughly 140 m thick Upper Cretaceous section consists of interbedded pelagic limestones, cherts and coarse polymict breccias including ophiolites and shallow water limestones. At the base, pink pelagic limestones rest on deeply altered and fractured Lower Jurassic Pantokrator Limestone.
Bandini, Alexandre N.   +2 more
openaire   +3 more sources

Bio- and isotope stratigraphy of the Cenomanian-Turonian transition and the variations related to OAE2 in the Holul section, west of Kermanshah [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2017
Micropalaeontological study based on planktonic foraminifera in the Cenomanian - Turonian succession of the Holul section, located in the Lurestan geological province (west of the Kermanshah City), resulted in distinction of Rotalipora cushmani ...
Mehdi Sarfi   +3 more
doaj   +1 more source

The Turonian-Coniacian deposits of the south-west of the Ulyanovsk-Saratov trough

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
Integrated study of a series of the Turonian and Coniacian complete geological records has revealed the stratigraphic completeness and specified the faunal contents of the deposits.
E. M. Pervushov   +4 more
doaj   +1 more source

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