Article
Geology
Benjamin Brigaud, Simon Andrieu, Thomas Blaise, Frederic Haurine, Jocelyn Barbarand
Summary: This study explored the timing and duration of hardground lithification and crystallization of early cements by dating early calcite cements with U-Pb geochronology. The consistency between the age of the cements and the stratigraphic age of deposition indicates that early cementation occurred during diagenesis. The results suggest that calcite U-Pb geochronology is a promising method for dating third-order sequence boundaries and refining the Jurassic time scale.
Article
Environmental Sciences
Long Pan, Jing Fang, Fu Wang, Zhiwen Shang, Yongsheng Chen, Jianfen Li, Lizhu Tian, Yongqiang Yang, Mansoor Alruqi, Zubair Ahmad, Summaira Malik, Awais Bokhari
Summary: Marine pollution has a negative impact on the ecosystem and biodiversity of the ocean. Efforts have been made to develop efficient catalysts for seawater purification. Analysis of sediment from the Western coast of Bohai revealed a correlation between sea level changes and sedimentary environment. Additionally, a promising technique using membrane technology for environmental restoration in marine settings was discovered.
Article
Environmental Sciences
Robert J. Nicholls, Daniel Lincke, Jochen Hinkel, Sally Brown, Athanasios T. Vafeidis, Benoit Meyssignac, Susan E. Hanson, Jan-Ludolf Merkens, Jiayi Fang
Summary: Land subsidence and uplift impact the rate of sea-level rise, with coastal populations experiencing faster rates of relative sea-level rise. The global average relative sea-level rise is 2.5 mm per year, but coastal inhabitants may experience up to four times faster rise due to subsidence.
NATURE CLIMATE CHANGE
(2021)
Article
Geology
Mara R. Diaz, Gregor P. Eberli
Summary: The study presents evidence that early marine cements in intergranular areas are the result of organomineralization processes driven by both active microbial metabolism and passive mechanisms influenced by mucilaginous extracellular polymeric substances and microbial cell walls. Micritic envelopes and micritic meniscus cements are proposed to be microbially-mediated, with signatures of biogenicity supported by the presence of dense filamentous fabrics and entombed microbial forms. Additionally, the proliferation of metabolically active microbial communities that assist in carbonate precipitation, trapping, binding, and encrustation of grains testifies to the significant contribution of microbes in early cementation processes.
Article
Geochemistry & Geophysics
Changle Wang, Christopher T. Reinhard, Kyle S. Rybacki, Dalton S. Hardisty, Frantz Ossa Ossa, Xiangli Wang, Axel Hofmann, Dan Asael, Leslie J. Robbins, Lianchang Zhang, Noah J. Planavsky
Summary: Stable chromium isotopes in carbonates can be used as a new tool for tracking changes in Earth's surface oxygen levels. The effects of diagenetic alteration on carbonate-bound Cr isotopic compositions should be considered when interpreting data from both modern and ancient carbonate successions. The Cr isotope fractionation observed in ancient strata may be linked to a combination of factors including non-redox dependent fractionation, local Cr redox cycling, and post-depositional alteration.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Multidisciplinary Sciences
Fowzia H. Abdullah
Summary: This study evaluated the impact of diagenetic processes on porosity and permeability in the paleokarst zone of the Middle Eocene Upper Dammam Formation in Kuwait. The results showed significant variations in porosity and permeability among different lithological units, with the chalky dolostone layer exhibiting the highest values and the karst carapace layer having the lowest values. The formation of pores in the rock framework was attributed to meteoric water dissolution, acidic gases from thermal maturation of kerogen, or a combination of both processes.
Correction
Environmental Sciences
Robert J. Nicholls, Daniel Lincke, Jochen Hinkel, Sally Brown, Athanasios T. Vafeidis, Benoit Meyssignac, Susan E. Hanson, Jan-Ludolf Merkens, Jiayi Fang
Summary: The correction to this paper has been published with the link provided.
NATURE CLIMATE CHANGE
(2021)
Article
Geosciences, Multidisciplinary
Hironori Matsumoto, Mark E. Dickson, Paul S. Kench
Summary: Holocene marine terraces are global and provide information on past coseismic events. This study shows that relative sea level changes significantly impact terrace development, with subtle differences in scenarios leading to completely different terrace sequences. Improved understanding of Holocene terrace sequences requires higher resolution paleo RSL data and chronological data on shore platform development.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Alar Rosentau, Volker Klemann, Ole Bennike, Holger Steffen, Jasmin Wehr, Milena Latinovic, Meike Bagge, Antti Ojala, Mikael Berglund, Gustaf Peterson Becher, Kristian Schoning, Anton Hansson, Lars Nielsen, Lars B. Clemmensen, Mikkel U. Hede, Aart Kroon, Morten Pejrup, Lasse Sander, Karl Stattegger, Klaus Schwarzer, Reinhard Lampe, Matthias Lampe, Szymon Uscinowicz, Albertas Bitinas, Ieva Grudzinska, Jueri Vassiljev, Triine Nirgi, Yuriy Kublitskiy, Dmitry Subetto
Summary: This study compiles and analyzes 1099 Holocene relative shore-level indicators around the Baltic Sea, with a focus on data points related to the last marine stage. Results show that regions with negative RSL tendencies dominate, while transitional regions exhibit shifts from positive to negative tendencies in the mid-Holocene. Comparisons with GIA predictions highlight the need for improvements in ice-sheet and Earth-structure models, demonstrating the potential benefits of this new compilation for future studies.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geochemistry & Geophysics
Guang-Yi Wei, Feifei Zhang, Yi-Sheng Yin, Yi-Bo Lin, Philip A. E. Pogge von Strandmann, Mengchun Cao, Na Li, Guolin Xiong, Xinran Chen, Caiwei Fan, Changgui Xu, Fei Tan, Xiyang Zhang, Hongqiang Yang, Hong -Fei Ling, Shu-Zhong Shen
Summary: This study investigates the lithium isotope variations in shallow-water carbonate sediments in the South China Sea and finds that carbonate mineralogy and early diagenesis significantly affect the lithium isotope values. Marine diagenetic carbonates have lithium isotope values close to seawater, while meteoric diagenetic carbonates have lower values. These findings have important implications for reconstructing paleo-weathering evolution in deep time lacking skeletal fossil records.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Geography, Physical
Roger C. Creel, Jacqueline Austermann, Nicole S. Khan, William J. D'Andrea, Nicholas Balascio, Blake Dyer, Erica Ashe, William Menke
Summary: This study presents the first comprehensive postglacial relative sea-level database for the Norwegian coast from Oslo to the Kola Peninsula. The research assesses the spatiotemporal patterns of Norwegian RSL change through quality controlled and recalibrated data, as well as statistical modeling.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Lameed O. Babalola, Abdullah M. Alqubalee, Michael A. Kaminski, Osman M. Abdullatif, Mohamed O. Abouelresh
Summary: This study investigates stable oxygen and carbon isotope data from the Middle Jurassic Dhruma Formation in central Saudi Arabia to examine paleoenvironments and diagenesis impacts on isotopic signals in sedimentary rocks.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2023)
Article
Geology
Thomas Mann, Andre Wizemann, Marleen Stuhr, Yannis Kappelmann, Alexander Janssen, Jamaluddin Jompa, Hildegard Westphal
Summary: Early-diagenetic cementation of tropical carbonates results from a combination of physico-chemical and biological processes. Analysis of Holocene Halimeda segments in Indonesia shows diverse cementation types and processes. This study provides new quantitative constraints on the rate of diagenetic cementation in tropical carbonate factories.
Article
Multidisciplinary Sciences
Juliet P. Sefton, Andrew C. Kemp, Simon E. Engelhart, Joanna C. Ellison, Makan A. Karegar, Blair Charley, Mark D. McCoy
Summary: This study reveals that the rise of relative sea level due to subsidence may have concealed evidence of early settlement in Remote Oceania. Additionally, famous sites were constructed at lower sea levels than previously thought, making them more vulnerable to future sea level rise.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geology
Arthur Saller, Charlotte Winterbottom
Summary: This study examined Cenozoic limestones from Hawaii and Enewetak to understand the diagenesis in deep sea water. The results showed that the dominant minerals in Hawaii samples were fibrous aragonite and high-magnesium calcite, while high-magnesium calcite in Enewetak samples transformed into low-magnesium calcite in deep sea water. The dissolution of aragonite and conversion of high-magnesium calcite to low-magnesium calcite varied with depth, indicating the influence of water depth on diagenesis.
DEPOSITIONAL RECORD
(2023)
Article
Geochemistry & Geophysics
S. Huck, U. Heimhofer, N. Rameil, S. Bodin, A. Immenhauser
EARTH AND PLANETARY SCIENCE LETTERS
(2011)
Article
Geology
Niels Rameil
SEDIMENTARY GEOLOGY
(2008)
Article
Geology
Adrian Immenhauser, Niels Rameil
SEDIMENTARY GEOLOGY
(2011)
Review
Geology
Stefan Huck, Niels Rameil, Tvrtko Korbar, Ulrich Heimhofer, Thomas D. Wieczorek, Adrian Immenhauser
Article
Geology
Niels Rameil, Adrian Immenhauser, Georg Warrlich, Heiko Hillgaertner, Henk J. Droste
Article
Geosciences, Multidisciplinary
Michal Matysik, Lars Stemmerik, Snorre Olaussen, Niels Rameil, Ingrid Piene Gianotten, Harald Brunstad
Summary: Spiculitic cherts in the Gohta oil and gas discovery exhibit unique reservoir properties, with pore systems dominated by uncemented interspicule pores and intercrystalline pores. The porosity in the cave fill formed by local redistribution of silica and dissolution of the carbonate matrix, while prolonged subaerial exposure played an indirect role in preventing complete silicification during burial.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Ingrid P. Gianotten, Niels Rameil, Sven E. Foyn, Terje Kollien, Julio R. Marre, Wim Looyestijn, Xiangmin Zhang, Albert Hebing
Summary: The main petrophysical challenges in carbonate reservoirs lie in defining meaningful rock types, establishing robust permeability and saturation models, and developing a realistic estimation of irreducible water saturation (S-wirr). This study focuses on the Alta discovery in the southwestern Barents Sea, where more than half of the hydrocarbon resources are found in complex carbonate reservoirs. Despite sufficient core coverage for permeability measurements and a workflow based on the Thomeer hyperbola for modeling water saturation, uncertainty remains high due to variable factors such as cementation, wettability, and residual oil presence.
Article
Geosciences, Multidisciplinary
C. Colombie, N. Rameil
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2007)