Article
Geosciences, Multidisciplinary
Fariborz Goodarzi, Somayeh Hosseininejad, Per K. Pedersen, Thomas Gentzis, Hamed Sanei
Summary: The Cretaceous Second White Specks Formation oil shales from Canada were analyzed to determine their composition, depositional environment, and hydrocarbon generating potential. The study identified different depositional facies and found variations in TOC content, boron content, and hydrocarbon potential among the oil shales.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geography, Physical
Aaron A. Kilmury, Kirstin S. Brink
Summary: This study provides an updated description and testing of the community zonation hypothesis for Late Cretaceous Western Interior Seaway (WIS) vertebrates. The results highlight significant fluctuations in vertebrate community zonation throughout time and space, shedding light on the compositional and paleoecological changes that can occur in shallow marine vertebrate communities over a 25 million year interval.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geography, Physical
Robert D. Bourque, Peter M. J. Douglas, Hans C. E. Larsson
Summary: This study used fossilized plant wax n-alkanes in fluvial sediments to reconstruct changes in plant ecology and carbon and water cycling across the Cretaceous-Paleogene boundary. The results show an increase in the relative abundance of terrestrial plants immediately after the boundary, possibly facilitated by the extinction of large herbivores. Additionally, the study found short-lived carbon and water cycle changes associated with the K-Pg impact in Western Canada, while longer-lasting ecological shifts in plant communities were observed.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Ruxin Ding, Diane Seward, Heping Zou
Summary: This paper presents a new perspective on the initial rift time of the East China Sea Basin based on the analysis of the apatite and zircon fission track data from the Changle-Nan'ao Belt. The study suggests that the rift opening most likely occurred at 80-70 Ma and reveals a diachronous rift opening from the southwestern East China Sea to the northwestern South China Sea during the Late Cretaceous-Paleogene.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Environmental Sciences
Mohamed Hamdi, Kalifa Goita
Summary: This research establishes a 3D hydrostratigraphic model that highlights the geological and hydrodynamic characteristics of aquifer formations and proposes a new framework for groundwater storage estimation. The results show the huge potential of groundwater in the study area.
Article
Geology
Sandy M. S. McLachlan, Vera Pospelova
Summary: This study reports a conformable K/Pg boundary succession in North America west of the Rocky Mountains and in the north-eastern Pacific, based on biostratigraphic controls. The palynological data record a marine assemblage turnover in the middle Oyster Bay Formation, indicating fluctuation between predominantly coastal and largely estuarine paleoenvironments across the K/Pg boundary. Localized paleoenvironmental conditions and climatic changes are reflected in the palynological assemblages, consistent with observations from numerous localities across both hemispheres.
CRETACEOUS RESEARCH
(2021)
Article
Geology
Gabor Botfalvai, Zoltan Csiki-Sava, Laszlo Kocsis, Gaspar Albert, Janos Magyar, Emese R. Bodor, Daniel Tabara, Alexey Ulyanov, Laszlo Makadi
Summary: In the early 20th century, Kadic discovered a Late Cretaceous vertebrate assemblage in Valioara, Hateg Basin. The fossils were georeferenced, relocated, and re-excavated based on Kadic's map, revealing one of the oldest faunal assemblages in the Hateg Basin. The fossils include turtles, crocodyliforms, dinosaurs, and mammals.
CRETACEOUS RESEARCH
(2021)
Article
Geochemistry & Geophysics
Dillon D. Johnstone, Kathryn M. Bethune, Colin D. Card, Victoria Tschirhart
Summary: The Patterson Lake corridor in the Athabasca Basin is characterized by multiple basement-hosted uranium deposits and prospects. The area has undergone multiple phases of deformation and folding, resulting in complex structural features.
GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
(2021)
Article
Paleontology
Scott Melnyk, Stephen Packer, John-Paul Zonneveld, Murray K. Gingras
Summary: The study introduces a new wood-boring ichnospecies, Apectoichnus lignummasticans, from lagoonal deposits of the Lower Cretaceous Sparky Formation in west-central Saskatchewan, Canada. The fossil displays similarities to modern borings in wood produced by marine isopods, reinforcing the usefulness of certain wood boring morphologies as indicators of marine transgressions in the rock record.
JOURNAL OF PALEONTOLOGY
(2021)
Article
Geochemistry & Geophysics
Victoria Tschirhart, Sally Pehrsson, Colin Card, Eric G. Potter, Jeremy Powell, Dinu Pana
Summary: Recent discoveries of basement-hosted uranium deposits in the Patterson Lake corridor in the southwestern Athabasca Basin of Canada have sparked strong interest in exploration in the region. New lithostratigraphic constraints, geochronology, and airborne geophysical surveys have greatly improved understanding of the host basement geology, leading to a re-examination of remote predictive mapping and geophysical responses of the buried basement rocks.
GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
(2021)
Article
Engineering, Geological
Mohammad Salsabili, Ali Saeidi, Alain Rouleau, Miroslav Nastev
Summary: This study investigates the correlation between shear wave velocity (V-s) and piezocone penetration test (CPTu) parameters in post-glacial sediments. It finds that existing correlations are biased and develops specific correlations that consider soil type and geological setting.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Meagan M. Gilbert, Frank H. McDougall
Summary: This paper presents a detailed study of the depositional environment in the Southfork Quarry in Canada, which preserves 29 million-year-old mammalian fossils. It provides critical insights into the Eocene-Oligocene transition and climate change.
CANADIAN JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Donald B. Brinkman, Julien D. Divay, David G. DeMar, Gregory P. Wilson Mantilla
Summary: This study documents the diversity and distribution of nonmarine teleost fishes in the Western Interior of North America during the late Maastrichtian based on isolated elements from vertebrate microfossil localities. A minimum of 20 taxa are recognized, including various families of teleost fishes. Patterns in the relative abundances of different taxa leading up to the Cretaceous-Paleogene boundary were observed in the Hell Creek Formation. The late Maastrichtian teleost assemblages are shown to be more diverse than an early Eocene assemblage from Wyoming, suggesting potential sampling bias in lower Cenozoic deposits or the impact of the K-Pg mass extinction event on nonmarine teleosts.
CANADIAN JOURNAL OF EARTH SCIENCES
(2021)
Article
Energy & Fuels
Wang Lixin, Yin Yanshu, Wang Hui, Zhang Changmin, Feng Wenjie, Liu Zhenkun, Wang Pangen, Cheng Lifang, Liu Jiong
Summary: The study introduces a method to reconstruct a 3D model from 2D cross-sections by obtaining multi-point pattern probabilities through linear and logarithmic pooling, improving sampling stability with adaptive spatial sampling and iterative simulation, and achieving good accuracy in reservoir reconstruction in Canada.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2021)
Article
Paleontology
Ronan Allain, Romain Vullo, Lee Rozada, Jeremy Anquetin, Renaud Bourgeais, Jean Goedert, Maxime Lasseron, Jeremy E. Martin, Adan Perez-Garcia, Claire Peyre De Fabregues, Rafael Royo-Torres, Dominique Augier, Gilles Bailly, Lilian Cazes, Yohan Despres, Aureliane Gailliegue, Bernard Gomez, Florent Goussard, Thierry Lenglet, Renaud Vacant, Mazan, Jean-Francois Tournepiche
Summary: This contribution describes the micro- and macrovertebrate fauna of Angeac-Charente in the Early Cretaceous period. The diverse fauna includes at least 38 different vertebrate taxa from all major clades, and consists of over 50,000 specimens. Angeac-Charente is home to the most diverse mixed continental bonebed and the only Lagerstatte known to date in the world, providing valuable insights into the Purbeckian paleocommunity. The fauna includes remarkable taxa such as a new ornithomimosaur, a large turiasaur, an helochelydrid turtle, and numerous mammals. The vertebrate fauna of Angeac-Charente exhibits a Purberckian character and suggests dispersal events between Africa and Europe during the Jurassic/Cretaceous transition.