Results 51 to 60 of about 190 (173)

Assessing Thermal Maturity of the Pendência Formation (Potiguar Basin) Using Vitrinite Reflectance and Raman Spectroscopy

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1203-1214, November 2025.
Palynofacies assemblages from the onshore Potiguar Basin display a wide thermal maturity range, with vitrinite reflectance (%Ro) values of 0.46–2.72 measured from nine samples at depths of 1059–4443 m. A strong correlation exists between %Ro and Raman parameters, specifically the G‐band's full width at half maximum.
Gabriel A. Barberes, Dalva A. L. Almeida, Flávia C. Marques, Julliana F. Alves, Paulo H. M. Toledo, Rafael de Oliveira, Lenize F. Maia, Linus Pauling F. Peixoto, Antonio Carlos Sant'Ana, Celly M. S. Izumi, Gustavo F. S. Andrade, Dorval C. Dias Filho, Taissa R. Menezes, Delano M. Ibanez, Luiz Fernando C. de Oliveira   +14 more
wiley   +1 more source

Multi‐Parameter Investigation of Cretaceous to Palaeocene Sedimentary Sequences in the Anambra and Niger Delta Basins, Nigeria: Organic Matter Characterisation, Palynofacies and Implications for Palaeoclimate and Sea‐Level Changes

Geological Journal, Volume 60, Issue 1, Page 196-222, January 2025.
The study examines Cretaceous to Palaeogene sedimentary sequences in the Anambra Basin, part of West African rift basins, utilising geochemical and palynological interpretations to understand organic matter accumulation. Palynofacies and geochemical data indicate a predominantly warm and humid tropical climate during a time of widespread marine ...
Erepamo J. Omietimi, Nils Lenhardt, Renchao Yang, Annette E. Götz, Aitalokhai J. Edegbai, Adam J. Bumby   +5 more
wiley   +1 more source

Evolution and architecture of an exhumed ocean‐facing coarse‐grained submarine canyon fill, Baja California, Mexico

Sedimentology, Volume 72, Issue 1, Page 189-226, January 2025.
ABSTRACT Present day submarine canyons are active conduits for the transfer of large volumes of sediment, carbon and pollutants from continents to oceans. However, the evolution of submarine canyons over geological timescales remains poorly understood due to their erosional nature and low preservation potential. The Late Cretaceous Punta Baja Formation
Max J. Bouwmeester, Ian A. Kane, David M. Hodgson, Stephen S. Flint, William J. Taylor, Euan L. Soutter, Adam D. McArthur, Miquel Poyatos‐Moré, Joshua Marsh, Ed Keavney, Rufus L. Brunt, Victoria Valdez‐Buso   +11 more
wiley   +1 more source

Palynological Study of Ora and the Upper Part of Kaista Formation in Zakho area, Iraqi Kurdistan Region [PDF]

Kirkuk Journal of Science, 2010
Palynological investigations of Ora Formation and the upper part of Kaista Formation (Late Devonian – Early Carboniferous) in the Northern Thrust Zone were conducted in Kiasta exposures about 2km away to the north west of Kaista village Zakho District ...
Govand H. Sherwani, Srood F. Naqishbandi, Dana N. Redha   +2 more
doaj   +1 more source

Research on the sedimentary characteristics of organic matter in lacustrine mudrocks and their hydrocarbon generation potential based on palynofacies analysis: Eocene shahejie formation, dongying sag

Frontiers in Earth Science, 2022
Lacustrine mudrocks are important hydrocarbon source rocks due to their high contents of organic matter (OM). An accurate determination of the origins of OM in the rocks can contribute greatly to the identification of the sedimentary environment and the ...
Xiang Zeng, Xiang Zeng, Jingong Cai, Jingong Cai, Xuejun Wang, Xuejun Zhang, Jianping Yan, Weilin Zhu, Weilin Zhu, Zhe Dong, Lizeng Bian   +10 more
doaj   +1 more source

Hydrocarbon‐derived thrombolites from the Outer Carpathians (Lower Cretaceous, Poland)

Sedimentology, Volume 71, Issue 7, Page 2183-2209, December 2024.
Abstract Shallow marine thrombolites from a newly discovered Lower Cretaceous cold seep in the Outer Carpathians (Poland) were analysed in order to untangle the complex sedimentological and biogeochemical processes involved in their formation and their diagenetic modifications.
Stefano Giunti, Przemysław Gedl, Artur Kędzior, Leszek Marynowski, Mariusz Paszkowski, Andreas Wetzel, Maciej J. Bojanowski   +6 more
wiley   +1 more source

The latest Jurassic–earliest Cretaceous climate and oceanographic changes in the Western Tethys: The Transdanubian Range (Hungary) perspective

Sedimentology, Volume 71, Issue 6, Page 1843-1872, October 2024.
Abstract The Jurassic/Cretaceous transition was characterized by several distinct palaeoenvironmental processes and events, amongst which some of the best known are the late Tithonian–early Berriasian aridization and the late Berriasian tectonic reactivation in the Neotethyan Collision Belt.
Damian G. Lodowski, Ottilia Szives, Attila Virág, Jacek Grabowski   +3 more
wiley   +1 more source

Hydrocarbon Generation Potential of the Campano-Maastrichtian Dark Mudstone Lithofacies, Benin Flank, South West Anambra Basin, Nigeria

Journal of Applied Sciences and Environmental Management, 2020
The dark mudstone lithofacies of Mamu Formation was deposited during the Campano-Maastrichtian flooding episode. It is laterally heterogeneous, and has been subdivided into marsh, bay and central basin subenvironments in order of proximality.
AJ Edegbai, WO Emofurieta
doaj   +1 more source

Palynofacies Analysis and Hydrocarbon Generation Potential of the Tithonian-Beriassian Chia Gara Formation from Selected Wells in Ajil, Hamrin, and Tikrit Oilfields, Northern Iraq [PDF]

Kirkuk Journal of Science, 2018
The recovered sedimentary organic matter from the Tithonian-Berriasian Chia Gara Formation was studied from three selected wells of Ajil-12 (Aj-12), Hamrin-1 (Hr-1), and Tikrit-3 (Tk-3) in Northern Iraq.
Pavel T. Al-Jabary, Dler H. Baban, Sabah A. Ismael   +2 more
doaj   +1 more source

Evidence for Low‐Pressure Crustal Anatexis During the Northeast Atlantic Break‐Up

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 7, July 2024.
Abstract While basaltic volcanism is dominant during rifting and continental breakup, felsic magmatism may be a significant component of some rift margins. During International Ocean Discovery Program (IODP) Expedition 396 on the continental margin of Norway, a graphite‐garnet‐cordierite bearing dacitic unit (the Mimir dacite) was recovered in two ...
A. M. Morris, S. Lambart, M. A. Stearns, J. R. Bowman, M. T. Jones, G. Mohn, G. Andrews, J. Millett, C. Tegner, S. Chatterjee, J. Frieling, P. Guo, D. W. Jolley, E. H. Cunningham, C. Berndt, S. Planke, C. A. Alvarez Zarikian, P. Betlem, H. Brinkhuis, M. Christopoulou, E. Ferré, I. Y. Filina, D. T. Harper, J. Longman, R. P. Scherer, N. Varela, W. Xu, S. L. Yager, A. Agarwal, V. J. Clementi   +29 more
wiley   +1 more source