Results 101 to 110 of about 21,253 (209)

Main changes in microfossil communities throughout the Upper Proterozoic of Russia

open access: yesCarnets de Géologie, 2005
More than 50 years of study have resulted in the description of hundreds of taxa of Precambrian microfossils from the different regions of Russia.
Golubkova Elena, Raevskaya Elena
doaj  

Considerations for the preparation of peat samples for palynology, and for the counting of pollen and non-pollen palynomorphs [PDF]

open access: yesMires and Peat, 2011
Peat deposits are valuable archives for studying palaeoclimate, the history of local and regional vegetation, and human impact. The most widely applied laboratory analytical technique has been palynology (pollen analysis), which is often limited to the ...
F.M. Chambers   +2 more
doaj  

Macrofossil extinction patterns at Bay of Biscay Cretaceous-Tertiary boundary sections [PDF]

open access: yes
Researchers examined several K-T boundary cores at Deep Sea Drilling Project (DSDP) core repositories to document biostratigraphic ranges of inoceramid shell fragments and prisms.
Macleod, Kenneth, Ward, Peter D.
core   +1 more source

An Objective Bayesian Analysis of Life's Early Start and Our Late Arrival

open access: yes, 2020
Life emerged on the Earth within the first quintile of its habitable window, but a technological civilization did not blossom until its last. Efforts to infer the rate of abiogenesis, based on its early emergence, are frustrated by the selection effect ...
Kipping, David
core  

Camian microfossils from Bevško

open access: yesGeologija, 1994
In the section west of Bevško with prevailing platy limestone the fossil microfauna was studied. The association consists of foraminifers, ostracods,conodonts and fish remains.
Tea Kolar-Jurkovšek
doaj  

Middle Triassic (Anisian) Limestones from Bled, Northwestern Slovenia: Microfacies and Microfossils

open access: yesGeologija, 1994
Microfacies types (predominantly intrabioclastic grainstones) and microfossils (predominantly dasycladacean algae and diverse foraminifera) characterize the Anisian carbonates near Bled (Castle Hill) and in the area westnorthwest of Bled as subtidal to ...
Erik Flügel   +2 more
doaj  

Enhancing iron biogeochemical cycling for canga ecosystem restoration: insights from microbial stimuli

open access: yesFrontiers in Microbiology
IntroductionThe microbial-induced restoration of ferruginous crusts (canga), which partially cover iron deposits and host unique ecosystems, is a promising alternative for reducing the environmental impacts of the iron mining industry.MethodsTo ...
Rayara do Socorro Souza da Silva   +9 more
doaj   +1 more source

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