Palaeoclimatic oscillations in the Pliensbachian (Early Jurassic) of the Asturian Basin (Northern Spain) [PDF]
One of the main controversial themes in palaeoclimatology involves elucidating whether climate during the Jurassic was warmer than the present day and if it was the same over Pangaea, with no major latitudinal gradients.
J. J. Gómez +2 more
doaj +1 more source
Toarcian oceanic anoxic event: An assessment of global causes using belemnite C isotope records [PDF]
Two hypotheses have been proposed to explain simultaneous large negative excursions (up to 7% PeeDee belemnite) in bulk carbonate (delta(13)C(carb)) and organic carbon isotope records (delta(13)C(org)) from black shales marking the Toarcian oceanic ...
Bailey, TR +5 more
core +1 more source
The Toarcian/Aalenian Global Stratotype Section and Point (GSSP) have been recently placed in the Fuentelsaz section, northeastern Spain. This paper is part of a long-term project that attempts to describe for the first time the fossil ostracod ...
CARMEN ARIAS +3 more
doaj +1 more source
Biostratigraphic boundaries of Jurassic ages [PDF]
From the perspective of geobiospheric history, the boundaries of the Jurassic age are considered. Eusto-migratory zoopeneplen are associated with a number of global geobiospheric events, such as mass extinctions, geochemical anomalies, and ocean anoxic ...
Repin Yu.S.
doaj +1 more source
Seawater redox variations during the deposition of the Kimmeridge Clay Formation, United Kingdom (Upper Jurassic): evidence from molybdenum isotopes and trace metal ratios [PDF]
The Kimmeridge Clay Formation (KCF) and its equivalents worldwide represent one of the most prolonged periods of organic carbon accumulation of the Mesozoic.
Abbink +81 more
core +1 more source
The paleontological analysis of the fauna of ammonites collected in the marl–limestone series of the Pliensbachian and The Toarcian of the Es-Saffeh Mountains (Tiaret, western Algeria) brings new data to the Oceanic Anoxic Event of the lower Toarcian (T ...
Fatiha Douas Bengoudira +2 more
doaj +1 more source
A well-preserved specimen of Stenopterygius quadriscissus (Reptilia, Ichthyosauria) from the Early Jurassic (Toarcian) of Yorkshire, UK and new insights into species delineation in the genus [PDF]
Despite abundant and productive Toarcian ichthyosaur-bearing localities in continental Europe, in the UK, Toarcian ichthyosaurs may often be fragmentary and/or too poorly preserved for positive identification.
Timothée Biot +3 more
doaj +3 more sources
First record of Gyrosteus mirabilis (Actinopterygii, Chondrosteidae) from the Toarcian (Lower Jurassic) of the Baltic region [PDF]
An isolated hyomandibula from a lower Toarcian carbonate concretion of the Ahrensburg erratics assemblage (Schleswig-Holstein, northern Germany) represents the first record of a chondrosteid fish from the Lower Jurassic of the southwestern Baltic realm ...
Jahn J. Hornung, Sven Sachs
doaj +2 more sources
Geology and Jurassic paleogeography of the Mt. Primo-Mt. Castel Santa Maria ridge and neighbouring areas (Northern Apennines, Italy) [PDF]
This paper presents the results of a geological mapping project across the Mt. Primo ridge and neighbouring areas (Umbria-Marche Domain – Northern Apennines), where a thick Meso-Cenozoic carbonate succession is exposed.
Fabbi, Simone
core +2 more sources
Development of freeze-thaw processing technique for disaggregation of indurated mudrocks and enhanced recovery of calcareous microfossils [PDF]
Microfossil extraction from indurated mudrocks is widely acknowledged as challenging, especially for foraminifera. Here we report development of the freeze–thaw extraction method through the addition of rapid heating, detergent and ultrasound stages.
Coe, Angela L., Kennedy, Alice E.
core +1 more source

