Results 51 to 60 of about 8,670 (237)

Climatic and eustatic controls on the development of a Late Triassic source rock in the Jameson Land Basin, East Greenland [PDF]

, 2014
This work was undertaken as part of the continuing work of CASP in East Greenland. The sponsoring companies are thanked for their continued support of this work. Help in the field by T. Kinnaird and useful discussions with A.
Andrews, Steven D., Braham, William, Kaye, Matt, Kelly, Simon R. A.   +3 more
core   +1 more source

The stages of сalcareous Algae development in the Urals during Devonian

Литосфера, 2015
The article highlights the following stages of the development microscopic Devonian Algae in the Urals: the rise of Algae in the early Devonian (Karpinski time), degradation of Algae flora during the end of Early Devonian (taltiysk time), the Middle ...
A. L. Anfimov
doaj   +2 more sources

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

, 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, Airaghi, Airaghi, Airaghi, Ansberque, Arne, Beyssac, Billerot, Burchfiel, C. J. Warren, Chen, Cook, D. Deldicque, Deng, Densmore, Deschamps, Dirks, Dubacq, Godard, Guo, Harrison, Harrowfield, Huang, Huang, Hubbard, Hubbard, J. de Sigoyer, Jia, Jiang, Kapp, Kapp, Kirby, L. Airaghi, Lanari, Lanari, Li, Li, Li, Li, Liao, Lichun, Liu, Massonne, Meng, Meng, Michele, Passchier, Robert, Robert, Robert, Roger, Roger, Roger, S. Guillot, SBGMR (Sichuan Bureau of Geology and Mineral Resources), Sigoyer, Sigoyer, Stipp, Tan, Tan, Tian, Vidal, Vidal, Wang, Wang, Wang, Weller, Whitney, Worley, Xu, Xu, Xue, Yan, Zhang, Zhang, Zhang, Zhang, Zheng, Zheng, Zhou, Zhou   +80 more
core   +3 more sources

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

The Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Biostratigraphy of the Upper Devonian-Lower Carboniferous deposits in Mighan section, northeast Shahrood, Eastern Alborz [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2019
The Devonian/Carboniferous (DC) transition is characterized by several transgressive/regressive cycles which led to a widespread ocean anoxia known as the Hangenberg Black Shale Event (HBS), close to the D/C boundary a major sea-level fall (Hangenberg ...
Tahere Parvizi, Ali Bahrami, Sandra Kaiser, Peter Koenigshof   +3 more
doaj   +1 more source

Upper Kellwasser carbon isotope excursion pre-dates the F–F boundary in the Upper Devonian Lennard shelf carbonate system, Canning Basin, Western Australia [PDF]

, 2015
Here we report four high-resolution carbon isotope records in addition to trace element data for the Frasnian–Famennian (F–F) boundary interval in the Lennard Shelf carbonate system of the Canning Basin, Western Australia.
Caulfield-Kerney, Samuel, Haines, Peter, Hillbun, Kelly, Hocking, Rger, Katz, David, Montgomery, Paul, Playton, Ted E., Ratcliffe, Ken, Roelofs, Brett, Tohver, Eric, Trinajstic, Kate, Ward, Peter, Wray, David   +12 more
core   +1 more source

Amplification of Immune Genes in Ancient Stony Corals for Adapting to Unstable Marine Environments

Ocean-Land-Atmosphere Research
The Late Devonian period was known for disturbances such as lower temperatures and abnormal ocean carbon and nitrogen levels, leading to the extinction of approximately 21% of genus-level and 16% of family-level marine organisms.
Tianzhen Wu, Yanli Lei, Zhimin Jian
doaj   +1 more source

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

, 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

Lower Wenlock black shales in the northern Holy Cross Mountains, Poland: Sedimentary and geochemical controls on the Ireviken Event in a deep marine setting [PDF]

, 2016
The stratigraphic variability and geochemistry of Llandovery/Wenlock (L/W) Series boundary sediments in Poland reveals that hemipelagic sedimentation under an anoxic/euxinic water column was interrupted by low density bottom currents or detached diluted ...
Bond, David P. G., Marynowski, Leszek, Smolarek, Justyna, Trela, Wiesław   +3 more
core   +1 more source