Graptolites as fossil geo-thermometers and source material of hydrocarbons: An overview of four decades of progress

Q Luo, G Fariborz, N Zhong, Y Wang, N Qiu… - Earth-Science …, 2020 - Elsevier
The thermal maturity of lower Paleozoic graptolite-bearing marine sediments, which host
many hydrocarbon deposits worldwide, has long been difficult to determine due to the …

The Lower Cambrian of Scandinavia: depositional environment, sequence stratigraphy and palaeogeography

AT Nielsen, NH Schovsbo - Earth-Science Reviews, 2011 - Elsevier
Lower Cambrian successions described from Scandinavia are reviewed and subjected to
sequence stratigraphical analysis; comparisons are also made with successions described …

Geological controls on the methane storage capacity in organic-rich shales

M Gasparik, P Bertier, Y Gensterblum… - International Journal of …, 2014 - Elsevier
High-pressure methane sorption isotherms were measured on selected Paleozoic and
Mesozoic organic-rich shales, considered as shale gas targets in Europe. The samples …

Experimental study of fluid transport processes in the matrix system of the European organic-rich shales: I. Scandinavian Alum Shale

A Ghanizadeh, M Gasparik… - Marine and Petroleum …, 2014 - Elsevier
This contribution presents results from a laboratory study investigating the fluid (gas/water)
transport properties in the matrix system of the Scandinavian Alum Shale. The maturity of the …

Thermal evolution behavior of the organic matter and a ray of light on the origin of vitrinite-like maceral in the Mesoproterozoic and Lower Cambrian black shales …

Q Luo, L Zhang, N Zhong, J Wu, F Goodarzi… - International Journal of …, 2021 - Elsevier
Abstract The overmature Precambrian to Lower Paleozoic marine shales from China contain
relatively simple organic matter (OM) composition, which is dominated by in-source solid …

Dispersed organic matter from pre-Devonian marine shales: A review on its composition, origin, evolution, and potential for hydrocarbon prospecting

Q Luo, F Goodarzi, N Zhong, N Qiu, X Wang… - Earth-Science …, 2024 - Elsevier
The pre-Devonian shales are important natural archives, preserving extensive information
on paleobiology, paleoenvironment, and paleoecology, and also acting as important …

The Ordovician of Scandinavia: a revised regional stage classification

AT Nielsen, P Ahlberg, JOR Ebbestad… - Geological Society …, 2023 - lyellcollection.org
Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …

Astronomically forced climate change in the late Cambrian

AL Sørensen, AT Nielsen, N Thibault, Z Zhao… - Earth and Planetary …, 2020 - Elsevier
We report evidence for Milankovitch cycles in two drill cores from the Cambro–Ordovician
Alum Shale Formation of Scandinavia. The signal is preserved in elemental abundances …

Optical characteristics of graptolite-bearing sediments and its implication for thermal maturity assessment

Q Luo, J Hao, CB Skovsted, Y Xu, Y Liu, J Wu… - International Journal of …, 2018 - Elsevier
Graptolite reflectance was thought to be one of the most useful thermal maturity indicators for
graptolite-bearing sediments, however, the relationship between graptolite reflectance and …

A new vanadium species in black shales: Updated burial pathways and implications

L Bian, A Chappaz, NH Schovsbo, H Sanei - Geochimica et Cosmochimica …, 2022 - Elsevier
Examining vanadium (V) geochemistry in organic-rich rocks might provide new insights into
the redox evolution of paleo ocean and atmosphere through Earth's history. Previous work …