Results 31 to 40 of about 21,547 (296)

An early Cambrian greenhouse climate [PDF]

open access: yesScience Advances, 2018
An early Cambrian greenhouse climate constrained by combining oxygen isotope and climate modeling data approaches.
Thomas H. P. Harvey   +10 more
openaire   +7 more sources

The Cambrian of the Iberian Peninsula : an overview [PDF]

open access: yesGeologica Acta, 2003
Ciencias de la ...
Gozalo Gutiérrez, R.   +4 more
openaire   +7 more sources

Source of hydrocarbons discovered from Cambrian sub-salt dolomite in Bachu uplift area, Tarim Basin

open access: yesShiyou shiyan dizhi, 2021
Exploration experiences have showed that the main source rocks of the Lower Cambrian have not been developed in the Bachu uplift; however, the well MB1 in this area had a good oil and gas showing in the Lower Cambrian.To clarify the hydrocarbon source of
Zicheng CAO   +6 more
doaj   +1 more source

Cambrian Hopf algebras

open access: yesAdvances in Mathematics, 2017
60 pages, 43 figures. Version 2: New Part 3 on Schr\"oder Cambrian Algebra.
Chatel, Grégory, Pilaud, Vincent
openaire   +4 more sources

New data on geochemical features, fluid mode, age and potential ore content of granitoids of Isherim anticlinorium (North Ural)

open access: yesЛитосфера, 2018
Granitoids of Ishirim anticlinorium which is one of the major Precambrian structures of the North Urals, are poorly studied by modern geochemical and isotope-geochronological methods that led to the existence of different points of view on formation ...
Georg A. Petrov   +2 more
doaj   +1 more source

Cambrian Holothurians [PDF]

open access: yesThe American Naturalist, 1913
n ...
openaire   +1 more source

Trace fossils associated with Burgess Shale non-biomineralized carapaces: bringing taphonomic and ecological controls into focus [PDF]

open access: yesRoyal Society Open Science, 2019
The association of trace fossils and non-biomineralized carapaces has been reported from Cambrian Lagerstätten worldwide, but the abundance, ichnodiversity, taphonomy and ecological significance of such associations have yet to be fully investigated. Two
M. Gabriela Mángano   +2 more
doaj   +1 more source

The COSC-2 drill core and its well-preserved lower Palaeozoic sedimentary succession – an unexpected treasure beneath the Caledonian nappes [PDF]

open access: yesEstonian Journal of Earth Sciences
The Collisional Orogeny in the Scandinavian Caledonides (COSC) project focuses on processes related to the closure of the Iapetus Ocean, causing the Ordovician–Silurian continent–continent collision between Baltica and Laurentia.
Oliver Lehnert   +18 more
doaj   +1 more source

Cambrian lattices

open access: yesAdvances in Mathematics, 2006
Revisions in exposition (partly in response to the suggestions of an anonymous referee) including many new figures. Also, Conjecture 1.4 and Theorem 1.5 are replaced by slightly more detailed statements. To appear in Adv. Math.
openaire   +2 more sources

A Cambrian–Ordovician Terrestrialization of Arachnids [PDF]

open access: yesFrontiers in Genetics, 2020
Understanding the temporal context of terrestrialization in chelicerates depends on whether terrestrial groups, the traditional Arachnida, have a single origin and whether or not horseshoe crabs are primitively or secondarily marine. Molecular dating on a phylogenomic tree that recovers arachnid monophyly, constrained by 27 rigorously vetted fossil ...
Jesus Lozano-Fernandez   +8 more
openaire   +7 more sources

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