Results 51 to 60 of about 8,484 (203)

The Mesozoic along-strike tectono-metamorphic segmentation of Longmen Shan (eastern Tibetan plateau) [PDF]

open access: yes, 2018
The Longmen Shan belt (eastern border of the Tibetan plateau) constitutes a tectonically active region as demonstrated by the occurrence of the unexpected 2008 Mw 7.9 Wenchuan and 2013 Mw 6.6 Lushan earthquakes in the central and southern parts of the ...
A. Robert   +80 more
core   +3 more sources

Disrupted continental environments around the Devonian-Carboniferous Boundary: introduction of the tener event [PDF]

open access: yes, 2016
Recent refinements of the palynological stratigraphic scheme around the Devonian-Carboniferous Boundary in southern Belgium result in new questions on the effect of the Hangenberg Biocrisis on spores and on the validity of some ‘biozones ...
Denayer, J., Prestianni, C., Sautois, M.
core   +1 more source

Assessing the Reliability of Early Marine Cements in Recording Changes in Seawater Redox Conditions Across the Late-Devonian Mass Extinction

open access: yesEdinburgh Student Journal of Science
The Late-Devonian Mass Extinction (LDME) extinguished up to 40% of all marine species, with evidence suggesting marine anoxia was the primary cause.
Craig Mellon   +2 more
doaj   +1 more source

Eutrophication, microbial-sulfate reduction and mass extinctions

open access: yesCommunicative & Integrative Biology, 2016
In post-Cambrian time, life on Earth experienced 5 major extinction events, likely instigated by adverse environmental conditions. Biodiversity loss among marine taxa, for at least 3 of these mass extinction events (Late Devonian, end-Permian and end ...
Martin Schobben   +5 more
doaj   +1 more source

Geochemical and ecological aspects of lower Frasnian pyrite-ammonoid level at Kostomłoty (Holy Cross Mountains, Poland) [PDF]

open access: yes, 2004
The lower Frasnian (transitans Zone with Ancyrodella priamosica = MN 4 Zone) rhythmic basin succession of marly limestones and shales (upper Szydlówek Beds) at Kostomloty, western Holy CrossMts., Central Poland, contains a record of the transgressive ...
Bond, D.P.G.   +3 more
core  

Integrated stratigraphic correlation of Upper Devonian platform-to-basin carbonate sequences, Lennard Shelf, Canning Basin, Western Australia: advances in carbonate margin-to-slope sequence stratigraphy and stacking patterns [PDF]

open access: yes, 2016
High-resolution, time-significant correlations are integral to meaningful stratigraphic frameworks in depositional systems, but may be difficult to achieve using traditional sequence stratigraphic or biostratigraphic approaches alone, particularly in ...
Caulfield-Kerney, Samuel   +17 more
core   +2 more sources

Discriminating signal from noise in the fossil record of early vertebrates reveals cryptic evolutionary history [PDF]

open access: yes, 2014
The fossil record of early vertebrates has been influential in elucidating the evolutionary assembly of the gnathostome bodyplan. Understanding of the timing and tempo of vertebrate innovations remains, however, mired in a literal reading of the fossil ...
Donoghue, Philip C J   +2 more
core   +2 more sources

A Diverse Tetrapod Fauna at the Base of 'Romer's Gap'.

open access: yesPLoS ONE, 2015
The lack of fossil tetrapod bearing deposits in the earliest Carboniferous ('Romer's Gap') has provoked some recent discussions regarding the proximal cause, with three explanations being offered: environmental, taphonomic, and collection failure. One of
Jason S Anderson   +4 more
doaj   +1 more source

The Relationship Between Late Devonian Environmental Evolution and Organic Matter Enrichment [PDF]

open access: yesE3S Web of Conferences
This study investigates the interplay between environmental evolution and organic matter (OM) accumulation during the Late Devonian, with a focus on the Frasnian-Famennian (F-F) transition in the Lengshuijiang section, South China.
Ma Yingying
doaj   +1 more source

Climate Change and Mass Extinction Risk in an Endemic-Rich Late Devonian Fauna

open access: yes, 2021
Abstract The fossil record can illuminate factors that contribute to extinction risk during times of global environmental disturbance; for example, inferred thermal tolerance is an important predictor of extinction during several mass extinctions that corresponded with climate change1,2.
Jaleigh Q. Pier   +4 more
openaire   +1 more source

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