Results 41 to 50 of about 149 (137)

Sedimentology and geomorphology of tufa barrages on rock coast shore platforms

Sedimentology, Volume 72, Issue 7, Page 2173-2200, December 2025.
ABSTRACT Despite tufa deposits being widely distributed and increasingly recognised globally on rock coasts, their distribution in the tidal frame and geomorphology is poorly understood. The distribution, sedimentology and geomorphology of tufa barrages on supratidal rock coasts are assessed and their controls established.
Thomas W. Garner, J. Andrew G. Cooper, Alan Smith   +2 more
wiley   +1 more source

Flood‐Driven Turbidite Deposition in a Highstand‐Detached Submarine Canyon

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Turbidites on active margins represent key archives of great earthquakes, yet turbidity currents triggered by non‐seismic events complicate paleoearthquake records and influence geochemical budgets. Sediment cores collected from highstand‐detached Astoria Canyon address whether non‐seismic turbidity currents are preserved in canyon ...
Evan Lahr, Andrea Ogston, Rick Keil, Jaqui Neibauer, Jassem Al‐Thani   +4 more
wiley   +1 more source

Palynostratigraphy and palaeoecology of the Niur Formation, Tikdar section, northwest of Kerman, Central Iran [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2019
Diverse, moderately to well-preserved palynomorphs including acritarchs (sensu stricto), prasinophytes cyst, chitinozoans, scolecodonts, and spores occur in some surface samples (90 meters thereof) of the Niur Formation (200 m thick) at the Tikdar ...
Hossein Hashemi, fereshteh sajjadi, Neda Bahrami Hesari   +2 more
doaj   +1 more source

Black shale deposition during the Early Jurassic: Geochemistry of Pliensbachian and Toarcian sedimentary rocks of the Hunzen Well, Hils Syncline, Northwest German Basin

The Depositional Record, Volume 11, Issue 5, Page 1451-1478, November 2025.
Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe, Ralf Littke, Linda Burnaz, Martin Blumenberg, Jochen Erbacher, Thomas Mann, Florian Amann, Thorsten Bauersachs   +7 more
wiley   +1 more source

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

Sedimentology and palaeoenvironmental analysis of a karstic shallow carbonate lake (Early‐Middle Miocene, Sinj Basin, Croatia)

The Depositional Record, Volume 11, Issue 1, Page 121-146, February 2025.
Miocene karstic Lake Sinj. A prograding carbonate bench on a gently inclined lake margin showing shallowing upwards tendency, and closing of the lake. Abstract In the Early to Middle Miocene, the post‐orogenic intramontane lacustrine Sinj Basin that belonged to the Dinarides Lake System evolved in the area of the External Dinarides.
Alan Vranjković, Elizabeth Gierlowski‐Kordesch, Arjan de Leeuw, Oleg Mandic, Dunja Aljinović, Ivan Dragičević, Mathias Harzhauser, Klaudia Kuiper, Vlatko Brčić, Davor Pavelić   +9 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

Neogene Palynomorphs from the 2-CA-1-RS Well, Pelotas Basin, Brazil: Biostratigraphic and Paleoecological Significance [PDF]

Geologia USP. Série Científica, 2011
There is information available on calcareous microfossils found in the pre-Quaternary section of the Pelotas Basin.However, there is relatively sparse palynological data, since palynological studies only started to be systematicallyconducted in the last ...
Wagner Guimarães da Silva, Paulo Alves de Souza, Javier Helenes, Mitsuru Arai   +3 more
doaj  

Lithology Identification and Estimation of Total Organic Carbon in Organic Shale Through Machine Learning Approaches: Insight From Geochemical Analysis for Source Rock Evaluation

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
Identification and classification of lithology and estimating total organic carbon (TOC) content in organic shale for source rock evaluation are challenging through indirect approaches in the sedimentary basin and have been addressed in current research through machine learning (ML) approaches. The Kohat sub‐basin is the most prolific basin of Pakistan
Muhsan Ehsan, Rujun Chen, Mehboob Ul Haq Abbasi, Kamal Abdelrahman, Jar Ullah, Zohaib Naseer, Fatemeh Boshagh   +6 more
wiley   +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