Article
Geosciences, Multidisciplinary
Sahar Hassan, Sameh S. Tahoun, Mohamed Darwish, William Bosworth, Ahmed E. Radwan
Summary: An integrated approach combining borehole image logs, palynology, and conventional wireline logs, as well as global chronostratigraphic charts, has been used to study the chrono-lithological boundary between the Kharita and Bahariya formations and the Albian and Cenomanian Stages in the Abu Gharadig Basin. The interpreted reservoir intervals suggest that the hydrocarbons trapped in the Albian-Cenomanian reservoirs are composed of type II/III kerogen. The study provides comprehensive information about the Albian-Cenomanian succession in the Northern Western Desert.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Zong-Yong Yang, Xian-Wu Bi, Jing-Jing Zhu, Ruizhong Hu, Hong Zhong, Kyaing Sein, Than Zaw, Dian-Zhong Wang
Summary: This study focuses on the geological origin of Cretaceous magmatic activity in central Myanmar and its relationship with the early tectonic evolution of the Neo-Tethyan Ocean. The results suggest that the magmatic complex is primarily composed of intra-oceanic arc magmas, with the granitic rocks possibly derived from partial melting of arc lower-crust. Additionally, evidence of components associated with continental crust is found, possibly due to collision and subduction of Indian Oceanic crust.
Article
Geosciences, Multidisciplinary
Yue-Wei Li, Cheng-Shan Wang, Guo-Biao Li, Xing Xu, Zi-Cheng Han, Michele Elmes, Tian-Yang Wang
Summary: The study focuses on the Cretaceous oceanic red beds and associated events in southern Tibet, particularly in the Gyabukeqing section of Guru town. Sedimentary strata from shale to limestone through the alternations of marl and shale were observed, with detailed foraminifer biostratigraphy establishing the middle Campanian age of the reddish marl beds. The Yadong red marl beds are comparable to documented CORBs in the northern Tethys Himalayas and Europe, suggesting a shallow marine continental shelf margin setting.
GEOLOGICAL JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Mohamed M. Elhossainy, Moataz El-Shafeiy, Nabil M. Al-Areeq, Dina Hamdy
Summary: This study presents a comprehensive investigation of the Middle-Late Cretaceous source rocks in the Abu Gharadig Field using source rock evaluation techniques and hydrocarbon generation modeling. The results indicate that most of the studied marine intervals in the field are considerable as source rocks, with the exception of the Abu Roash A-D members. The study also reveals spatial and temporal discrepancies in the thermal maturity and organic composition of the rock units, suggesting the influence of factors such as paleoclimate, eustatic, and basin tectonics. Integrated approaches are needed to further explore the driving forces behind these organics-accumulating events.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Esam A. Abd El Gawad, Walid A. Makled, Ahmed S. Mousa, Tarek Y. El Hariri, Doaa A. Mousa, Tamer E. Hamed
Summary: The Abu El Gharadig Basin contains active petroleum systems, with Upper Cretaceous hydrocarbon source rocks playing an important role. The concentration of organic matter is crucial in determining the potential of source rock occurrences. The study utilizes palynofacies analysis to identify paleoenvironmental trends and reveals a common cyclic pattern connected to orbital-induced climate changes.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Luis-Andres Guerrero-Murcia, Javier Helenes
Summary: Statistical and probabilistic analyses of Upper Cretaceous tropical dinoflagellate cysts from Venezuela revealed 21 species in the optimal stratigraphic sequence. Compilation of dinoflagellate cysts from various tropical sites in South America and the Gulf of Guinea showed a rich assemblage dominated by gonyaulacoid species.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Chen Ji, Li-Long Yan, Lu Lu, Xin Jin, Qiangtai Huang, Kai-Jun Zhang
Summary: This study reveals that the Late Cretaceous Anduo volcanic rocks in the southern Qiangtang may have originated from the subducted Meso-Tethyan oceanic plateaus, enriching the magmas and contributing to the uplift and growth of the Tibetan plateau. The geochemical modeling shows a complex process of melting and assimilation, with different types of rocks indicating various origins and processes.
Article
Plant Sciences
Alina I. Iakovleva, Claus Heilmann-Clausen
Summary: The palynological analysis of a mid neritic-upper bathyal Ypresian section at Aktulagay in western Kazakhstan has identified eight dinoflagellate cyst zones and established a correlation with the standard nannofossil zonation. The study also describes the presence of new species and suggests environmental changes related to the cooling at the end of the Early Eocene Climatic Optimum (EECO).
Article
Plant Sciences
James B. Riding
Summary: In the past year, there have been 38 new contributions on Triassic, Jurassic, and earliest Cretaceous dinoflagellate cysts, as well as significant research progress on Triassic and Early Jurassic marine palynology in sub-Arctic West Europe and West Russia. All 38 items are listed in the article with keywords descriptions and dois where applicable.
Article
Geography, Physical
Thomas Steuber, Mohammad Alsuwaidi, Dominik Hennhoefer, Hind Sulieman, Ameera AlBlooshi, Tiffany Dawn McAlpin, Hesham Shebl
Summary: This study presents the sedimentological and geochemical records of the negative carbon-isotope excursion (CIE) during the onset of the early Aptian oceanic anoxic event (OAE) 1a, obtained from a well core located 100 km offshore Abu Dhabi, United Arab Emirates. The results indicate the completeness and high sediment preservation rates of the C3 segment of the CIE, and reveal two episodes of cooling separated by rapid warming during the peak of the negative CIE. The study also discusses the impact of diagenesis and seawater pH on the oxygen-isotope record and suggests a major volcanic CO2 release as the cause of low carbonate saturation of seawater during the C3 segment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Abdelrahman M. Salama, Zakaria M. Abd-Allah, Mohamed El-Sayed, Mohamed A. Elbastawesy
Summary: This study evaluates the hydrocarbon potential, quality of organic matter, and thermal maturation history of the Abu Roash F and G members and the Bahariya Formation in the Khalda Concession in the Western Egyptian Desert. The results indicate that the hydrocarbon potential ranges from poor to very good, with total organic carbon reaching 2.5 wt%. The study also reveals that the studied sequences have reached the mature stage at the studied depths, with entrapment styles primarily being structural traps of normal faults and anticline folds.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Ecology
Barathan Balaji-Prasath, Ying Wang, Yu Ping Su, Hong Lin, Shenglin Feng, Luwei Zheng
Summary: This study investigated the viable dinoflagellate cyst composition and assemblages in the surface sediments of the aquaculture coastal region in Fujian, southeast China. The presence of potentially harmful algal bloom cysts in the sediments was noted, posing a potential risk for toxic red tides.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Geochemistry & Geophysics
Yun-Chuan Zeng, Ji-Feng Xu, Jian-Lin Chen, Bao-Di Wang, Feng Huang, Xiao-Ping Xia, Ming-Jian Li
Summary: This study presents new geochronological and geochemical data, confirming the presence of Early Cretaceous ophiolite within the Bangong-Nujiang Suture Zone and supporting a new model for the evolution of the Meso-Tethys Ocean.
Article
Geosciences, Multidisciplinary
Zhipeng Xie, Chuandong Xue, Tiannan Yang, Wei Wang, Jingkun Liu, Di Xin
Summary: This study reports the geochemical characteristics and origin of a gabbroic unit in the southern Lancangjiang tectonic zone, southwestern China. The gabbroic unit formed in the Early Cretaceous and originated from a shallow and depleted mantle source with slight crustal contamination. These findings reveal the existence of a back-arc rifting setting in the southeastern Tibetan Plateau during the Jurassic-Cretaceous.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
S. Khan, D. Kroon, S. Ahmad, A. Ali, B. Wadood, A. Rahman
Summary: This study in Pakistan constrained the stratigraphic horizons of Cretaceous oceanic anoxic events for the first time at the northwestern margin of the Indian Plate using high-resolution planktonic foraminiferal biostratigraphy, establishing 15 biozones from early Aptian to early Maastrichtian. The evolution of planktonic foraminifera in this region of the Tethys Ocean is driven by OAEs, with mass extinctions and rapid speciation events correlating with different OAEs.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Ahmed Mansour, Thomas Gentzis, Sameh S. Tahoun, Mohamed S. Ahmed, Michael Wagreich, Humberto Carvajal-Ortiz, Jacob Neumann, Ahmed E. Radwan
Summary: During the Early Cretaceous (Albian), there was a global warming and increased environmental perturbations, resulting in the accumulation of organic carbon-rich sediments. In the southern margin of the Tethys Ocean, there were shallow water conditions with some phases of bottom water anoxia. The Kharita Formation in the Abu Gharadig Basin underwent palynological analysis, organic matter characterization, hydrocarbon generation potential assessment, and thermal maturity assessment.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Douaa Fathy, Rainer Abart, Michael Wagreich, Susanne Gier, Mohamed S. Ahmed, Mabrouk Sami
Summary: This study evaluated the continental weathering intensity, climatic changes, and their impact on the deposition of Late Campanian black shale in the Western Desert of Egypt using mineralogical and geochemical data. The results showed that the black shale was deposited under warm/humid conditions based on its high concentrations of certain elements and specific geochemical ratios. The weathering intensity was strongly influenced by paleoclimate, but had a weak impact on oceanic nutrient fluxes and water salinity during the deposition of Late Campanian black shale.
Editorial Material
Geosciences, Multidisciplinary
Colin N. Waters, Martin J. Head, Jan Zalasiewicz, Francine M. G. McCarthy, Scott L. Wing, Peter K. Haff, Mark Williams, Anthony D. Barnosky, Barbara Fialkiewicz-Koziel, Reinhold Leinfelder, J. R. McNeill, Neil L. Rose, Will Steffen, Colin P. Summerhayes, Michael Wagreich, Zhisheng An, Alejandro Cearreta, Andrew B. Cundy, Ian J. Fairchild, Agnieszka Galuszka, Irka Hajdas, Yongming Han, Juliana A. Ivar do Sul, Catherine Jeandel, Jaia Syvitski, Simon D. Turner, Jens Zinke
Summary: Merritts et al. inaccurately portray Paul Crutzen's Anthropocene concept, misinterpreting it as encompassing all significant anthropogenic impacts, extending back many millennia. Waters et al. introduced the concept of a Great Acceleration Event Array (GAEA) which highlights diverse and complex stratigraphic event markers that are tightly clustered around 1950 CE, providing a clearly recognizable Anthropocene chronostratigraphic base. The 'Anthropocene event' proposed by Merritts et al., following Gibbard et al., confuses the transformative human impact of the chronostratigraphic Anthropocene. Waters et al. recognize an evidence-based Anthropogenic Modification Episode that is more explicitly defined than the interpretive interdisciplinary 'Anthropocene event' of Gibbard et al.
EARTH-SCIENCE REVIEWS
(2023)
Article
Biology
Adam Wierzbicki, Erik Wolfgring, Michael Wagreich, Mariusz Kedzierski, Regina Mertz-Kraus
Summary: The periodicity of celestial bodies' mutual position is essential for life on Earth. In this study, we analyzed the fossilized shell of Inoceramus (Platyceramus) salisburgensis and discovered a regular geochemical signal repetition with a cycle of approximately 0.006 mm. The estimated shell accretion rate is about 0.4 cm per lunar year. We identified a biological clock that follows either a semilunar or a tidal cycle, and the tidal dominance cycle seems to be a better fit for the behavior of I. (P.) salisburgensis.
Article
Geochemistry & Geophysics
Urs Klotzli, Jolanta Burda, Paul Tibuleac
Summary: Notable REE mineralization is found in the Ditrau Alkaline Massif in the Eastern Carpathians of Romania. The mineralization occurs as carbonate veins cross-cutting the complex and consists of monazite-(Ce), xenotime-(Y), and apatite. The ages of the mineralization suggest the presence of a late-stage carbonatitic intrusion.
Article
Geochemistry & Geophysics
Ahmed Mansour, Sameh S. Tahoun, Aya Raafat, Mohamed S. Ahmed, Francisca Oboh-Ikuenobe, Thomas Gentzis, Xiugen Fu
Summary: This study conducted a comprehensive analysis of the Middle Jurassic in the north Western Desert, Egypt, and identified four different paleoenvironmental characteristics. The results showed that organic carbon-rich fine siliciclastic and carbonate deposits were predominantly found in the area. The composition of particulate organic matter, plant debris, and dinoflagellate cysts, as well as the types of organic matter in the rocks, reflected the depositional paleoenvironmental patterns. These findings are of great significance for a better understanding of the paleoenvironmental evolution and hydrocarbon potential in the region.
Article
Geochemistry & Geophysics
Ahmed Mansour, Sameh. S. S. Tahoun, Aya Raafat, Mohamed. S. S. Ahmed, Thomas Gentzis
Summary: This study conducted a detailed palynomorph and palynofacies analysis of the Middle Jurassic Khatatba Formation in the Dahab-Mireir Basin, revealing moderately diverse palynomorph assemblage and palynofacies. The findings provide insights into different depositional environments and relative sea level changes, which are of significant importance for understanding basin history, reservoirs, and source rock units.
Article
Biodiversity Conservation
Mostafa Mohamed Sayed, Petra Heinz, Ibrahim Mohamed Abd El-Gaied, Michael Wagreich
Summary: The Eocene deposits of Egypt provide valuable information for reconstructing the paleoenvironment during this warmhouse climate interval. The studied rock samples showed rich benthic foraminiferal assemblages and limited occurrences of planktonic foraminifera. The identified species indicate the presence of moderate to high oxygen levels and warm climatic conditions.
Article
Geochemistry & Geophysics
Susanne Jamaluddin, Michael Wagreich, Susanne Gier, Katerina Schopfer, Desianto Payung Battu
Summary: This study evaluates the paleoenvironment and paleoclimatic controls of sediments in the Middle Miocene Balikpapan Group, Mahakam Delta of the Lower Kutai Basin, Indonesia. The results show that fluvio-deltaic depositional environment and humid tropical climate are the primary factors controlling the production, transport, distribution, and preservation of sedimentary organic matter.
Article
Geology
Polina Pavlishina, Docha Dochev, Michael Wagreich, Veronika Koukal
Summary: This article describes and stratigraphically calibrates the Upper Cretaceous succession (Coniacian to lowermost Maastrichtian, with focus on the Campanian) at Petrich, Central Srednogorie Zone in Bulgaria, based on nannofossils, dinoflagellate cysts, and inoceramids. The study identifies several standard nannofossil zones and subzones and correlates them with dinoflagellate cyst zones and inoceramid assemblages. The composition of the dinoflagellate cyst assemblages and palynofacies pattern indicates normal marine, oxic conditions and low nutrient availability during the Campanian.
ACTA GEOLOGICA POLONICA
(2023)
Article
Geochemistry & Geophysics
Matee Ullah, Urs Kloetzli, Ce 'cile Gautheron, Laurent Tassan-Got, Fakhrul Islam, Muhammad Younas, Kamran Shehzad, Muhammad Khubab, Muhammad Ibrar, Bilal Wadood
Summary: This article investigates the factors affecting lead diffusion in phosphate minerals, specifically apatite. The study uses computational techniques and simulations to examine the effects of chemical composition, anisotropy, and growth structure on lead diffusion. The results show that lead diffusion in apatite is anisotropic and can be influenced by chemical substitutions. Different substitutions can increase or decrease lead diffusion, with varying effects. Additionally, the effective closure temperature depends primarily on the degree and types of chemical substitutions and plays a crucial role in lead diffusion/loss in apatites.
Article
Geochemistry & Geophysics
Matee Ullah, Urs Kloetzli, Bilal Wadood, Muhammad Khubab, Fakhrul Islam, Kamran Shehzad, Rafique Ahmad
Summary: This study investigates the factors affecting lead diffusion in zircon and uses various methods to quantitatively analyze its behavior. The results suggest that anisotropy plays an important role in lead diffusion, and defects and radiation damage also affect the closure temperature.
Article
Geology
Jimmy de Rooij, Sybrand A. N. Lucassen, Charlotte Furer, Anne S. Schulp, P. Martin Sander
Summary: This study presents a detailed osteohistological analysis on Triceratops horridus and Triceratops cf. prorsus specimens, aiming to understand the growth and development of ceratopsids. The analysis reveals a distinct pattern of bone tissue growth in Triceratops limb elements, but also suggests that taxonomic ambiguity between Torosaurus and Triceratops cannot be solely resolved based on histological data.
CRETACEOUS RESEARCH
(2024)
Review
Geology
J. R. Ovando-Figueroa, J. A. Moreno-Bedmar, M. Company, J. A. Jacobo-Delgado
Summary: This article presents a review of ammonoid specimens from the Berriasian and Valanginian age in Zacatecas, Mexico. The study includes updated museographic information, new images, and 3D models of the specimens. Taxonomic identification has revealed six species and two genera. Stratigraphic range data suggests that the specimens belong to the uppermost upper Berriasian to lower Valanginian interval, with several biozones identified. Additionally, a paleobiogeographic analysis indicates a clear affinity with contemporaneous ammonoid assemblages from the Mediterranean region.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Jake Kotevski, Ruairidh J. Duncan, Adele H. Pentland, James P. Rule, Patricia Vickers-Rich, Thomas H. Rich, Erich M. G. Fitzgerald, Alistair R. Evans, Stephen F. Poropat
Summary: The cranial remains of non-avian theropod dinosaurs from the Cretaceous period in Australia are poorly understood. This study presents new evidence of non-mandibular cranial material, possibly belonging to the Megaraptoridae family, and contributes to the limited knowledge of Australian Cretaceous theropod cranial remains.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Josh Jenkins Shaw, Alexey Solodovnikov, Evgeny E. Perkovsky
Summary: A fossil of the monogeneric rove beetle subfamily Trichophyinae (genus Trichophya) has been discovered in the Upper Cretaceous Taimyr amber from northern Siberia. This finding indicates the morphological differences between ancient and modern Trichophya species groups. By comparing the morphology, distribution, and habitat requirements of extant species, the taxonomy, biogeography, and paleoecology of the Trichophya in Taimyr amber can be better understood.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Martin Kostak, Frank Wiese, Zuzana Kozlova, Adam Culka, Martin Mazuch, Martin Soucek
Summary: A well-preserved fossil of an upper Cretaceous acanthoceratoid ammonite has been discovered in the Bohemian Cretaceous Basin, providing important insights into the jaw anatomy of these extinct organisms.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Gustavo Santiago, Marcelo de Araujo Carvalho, Renato Rodriguez Cabral Ramos, Sandro Marcelo Scheffler
Summary: The Santa Marta Formation in the Antarctic Peninsula is an important sedimentary sequence that provides insights into paleoenvironmental changes. The distribution of sedimentary organic matter reveals three distinct palynofacies associations and shows a progressive transgression from terrestrial to marine environments.
CRETACEOUS RESEARCH
(2024)
Article
Geology
B. J. Vazquez, D. Castanera, B. Vila
Summary: In Europe, the fossil record of sauropods in the uppermost Cretaceous is mainly found in Spain, France, and Romania. Recently, a significant discovery of titanosaurs' teeth was made in Els Nerets, Spain, which contains the largest tooth sample from the Late Cretaceous in Europe. The teeth show distinct characteristics but cannot be attributed to any known European species. Based on tooth morphology and wear facets distribution, a new taxon is proposed.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Youssef S. Bazeen, Walid G. Kassab, El Sayed M. Moneer, Gebely A. Abu El-Kheir, Mohamed K. Abdelgawad, Haitham M. Ayyad
Summary: This study investigates the Maastrichtian-Danian succession in the Abu Minqar section of the Western Desert of Egypt, using an integrated analysis of biostratigraphy and chemostratigraphy. The results suggest that regional tectonics played a substantial role in the depositional history and paleoenvironmental circumstances of the southern Tethys margin.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Fernando R. Rios, Ana M. P. Mizusaki, Rualdo Menegat, Isaque C. Rodrigues
Summary: This study examines the temporal and spatial relationships between fluvio-aeolian, aeolian, and volcanic systems in the southernmost part of the Parana Basin during the Late Jurassic and Early Cretaceous. By analyzing facies and architectural elements, the evolution of the volcano-sedimentary record is reconstructed.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Antonio M. Casas, Arsenio Munoz, Alberto Tella, Carlos L. Liesa
Summary: This work proposes the application of magnetic surveying to study the cyclicity in sedimentary basins. Through measuring the total magnetic field and vertical magnetic gradient, the short-wavelength magnetic anomalies associated with the sedimentary sequence can be analyzed, providing information about the magnetic susceptibility and magnetic remanence of different sedimentary units. The cyclostratigraphic analysis reveals the existence of various cycles and enables the dating of the basin fill, offering new constraints for basin evolution.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Ottilia Szives, Josep A. Moreno-Bedmar, Beatriz Aguirre-Urreta, Miguel Company, Camille Frau, Mikel Lopez-Horgue, Antoine Pictet, Izabela Ploch, Christian Salazar, Ricardo Barragan, Jean -Louis Latil, Jens Lehmann, Stephane Reboulet, Emmanuel Robert
Summary: The 7th meeting of the IUGS Lower Cretaceous Ammonite Working Group discussed important changes in the geological age classification, including adjustments and improvements to the upper Tithonian-Berriasian, upper Aptian, and Albian stages. The meeting also discussed the Valanginian and Hauterivian stages, and provided discussions on zonal indices and units, emphasizing the use of interval zones and subzones.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Felix Schlagintweit, David Gercar, Bostjan Rozic
Summary: A mixed assemblage of planktonic and benthonic foraminifera has been found in the Lower Flyschoid Formation in the western part of the Slovenian Basin. These findings provide valuable insights into the biostratigraphy and paleogeographic configuration of the region during the Early to Middle Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Arkaprava Mukhopadhyay, Debarati Chattopadhyay, Arghya Poddar, Ranita Saha, Sachin Patil, Tushar Sonkar, Sujoy Das, Rudranil Basak, Shubhabrata Paul, Arindam Roy
Summary: Predator-prey interaction exerts significant selection pressure on the evolutionary pathways of both parties. This research presents a new dataset of gastropod drilling predation on molluscan prey from the Upper Cretaceous, highlighting the influence of drilling predation during this period. The study utilizes a hybrid method of surface sampling without physically breaking the host rock. Findings suggest that drilling predation was an established form of predation during the Late Cretaceous, yet remains understudied.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Dany Azar, Andre Nel
Summary: Lebanoaktassia curiosa is a new genus and species of strange dragonfly, representing the first Gondwanan species of the family Aktassiidae. It was found in Hjoula, Lebanon, along with two endemic dragonfly families, suggesting a possible connection to an island insular system in the Early Cretaceous.
CRETACEOUS RESEARCH
(2024)
Article
Geology
Pablo M. Villegas, A. Martin Umazano, Marcelo Krause, Mariana Brea
Summary: Conifer fossil woods from the Campanian Puntudo Chico Formation were studied, confirming the presence of Brachyoxylon currumillii and the introduction of Cupressinoxylon sp. cf. C. artabeae in the formation. The new specimens of Podocarpoxylon mazzonii suggest that this taxon is common in the Cretaceous to Eocene floristic assemblages. The growth-ring analysis of these fossil trees indicates their development under temperate and humid conditions, with slight sensitivity from year to year and a terminal event representing a cessation or retardation of cambial activity. Other paleoclimatic proxies suggest a temperate-warm and humid depositional environment with some semi-arid events in the Puntudo Chico Formation.
CRETACEOUS RESEARCH
(2024)