Sensitivity of biomarker properties to depositional environment and/or source input in the Lower Toarcian
New information on Hauffiosaurus (Reptilia, Plesiosauria) based on a new species from the Alum Shale Member (lower Toarcian
: Lower Jurassic) of Yorkshire, UK, Palaeontology.
Some 182 to 174 million years ago, during the early Jurassic era, a mass extinction event referred to as Toarcian
Oceanic Anoxic Event or T-OAE occurred.
For this study, an international team of scientists set out to better understand today's oxygen-deprived oceans by investigating the Toarcian
Oceanic Anoxic Event (T-OAE), an interval of global oceanic deoxygenation characterised by a mass extinction of marine organisms that occurred in the Early Jurassic Period.
Michelot, "Diffusion of HTO, 36Cl--and 125I--in Upper Toarcian
argillite samples from Tournemire: Effects of initial iodide concentration and ionic strength," Applied Geochemistry, vol.
Handlirsch  added 10 new species from the Upper Lias (Toarcian
) of Germany.
Littke, "Maturity-related compositional changes in the low-molecular-weight hydrocarbon fraction of Toarcian
shales," Organic Geochemistry, vol.
For this purpose, the Upper Sinemurian, Pliensbachian and Lower Toarcian
(Lower Jurassic) deposits of the Asturian Basin in northern Spain, including more than 100 m thick succession containing organic-rich and black shale deposits, have been studied.
A sixth core contains Toarcian
marine organisms from the Lower Jurassic, which opens a new window into the geology of the Herald Arch region.
Formation is considered to be of Early Jurassic as its overlying sediments (Shinawri Formation) have revealed characteristic Early Toarcian