cretaceous

First-Ever Amber Found in Antarctica Unlocks Secrets of Cretaceous Rainforest



The 90-million-year-old resin offers a rare trace of a long-lost ecosystem.




cretaceous

Tectonic-paleogeographic implications of a detailed Cretaceous-Cenozoic exhumation history in the Richardson Anticlinorium, northern Yukon, documented by multi-kinetic apatite fission track modelling

Lane, L S; Issler, D R; O'Sullivan, P B. Geoconvention 2020 abstracts; 2020 p. 1-2
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210002.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210002.jpg" title="Geoconvention 2020 abstracts; 2020 p. 1-2" height="150" border="1" /></a>




cretaceous

Bioturbation, heavy mineral concentration, and high gamma-ray activity in the Lower Cretaceous McMurray Formation, Canada

Fustic, M; Nair, R; Wetzel, A; Siddiqui, R; Mathews, W; Wust, R; Bringue, M; Radovic, J. Palaeogeography, Palaeoclimatology, Palaeoecology vol. 564, 110187, 2020 p. 1-17, https://doi.org/10.1016/j.palaeo.2020.110187
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20200671.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20200671.jpg" title="Palaeogeography, Palaeoclimatology, Palaeoecology vol. 564, 110187, 2020 p. 1-17, https://doi.org/10.1016/j.palaeo.2020.110187" height="150" border="1" /></a>




cretaceous

Geochemical database of Cretaceous High Arctic Large Igneous Province magmatic rocks, Arctic Canada

Bédard, J H; Saumur, B -M; Williamson, M -C; Tegner, C; Troll, V R; Deegan, F M; Evenchick, C A; Grasby, S E; Dewing, K. Geological Survey of Canada, Open File 8759, 2020, 7 pages, https://doi.org/10.4095/327829
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_327829.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_327829.jpg" title="Geological Survey of Canada, Open File 8759, 2020, 7 pages, https://doi.org/10.4095/327829" height="150" border="1" /></a>




cretaceous

Siliceous microfossils and agglutinated foraminifera from the Upper Cretaceous Smoking Hills and Mason River formations in the Smoking Hills area, Northwest Territories

Diaz, J F; Galloway, J M; Bringué, M; Pedersen, P K; Grasby, S E. Geological Survey of Canada, Open File 8716, 2020, 21 pages, https://doi.org/10.4095/325466
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_325466.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_325466.jpg" title="Geological Survey of Canada, Open File 8716, 2020, 21 pages, https://doi.org/10.4095/325466" height="150" border="1" /></a>




cretaceous

Dinoflagellate cyst taxonomy of the Late Cretaceous Smoking Hills Formation (Horton-Anderson Plains, NWT)

Bringué, M; Fensome, R A; Galloway, J M. Geoconvention 2020 abstracts; 2020 p. 1-2
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20190494.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20190494.jpg" title="Geoconvention 2020 abstracts; 2020 p. 1-2" height="150" border="1" /></a>




cretaceous

The age, foraminifera, and palynology of the Upper Cretaceous Eagle Plain Group, northern Yukon

McNeil, D H; Dixon, J; Bell, K M. Geological Survey of Canada, Current Research (Online) 2021-2, 2021, 13 pages, https://doi.org/10.4095/328237
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328237.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328237.jpg" title="Geological Survey of Canada, Current Research (Online) 2021-2, 2021, 13 pages, https://doi.org/10.4095/328237" height="150" border="1" /></a>




cretaceous

An integrated paleoenvironmental study of Lower Cretaceous to lower Cenozoic strata of the Labrador margin, offshore eastern Canada

Dafoe, L T; Williams, G L. The Atlantic Geoscience Society (AGS), 47th Colloquium and Annual Meeting, program with abstracts/La Société Géoscientifique de l'Atlantique, 47th Colloquium and Annual Meeting, program with abstracts; 2021 p. 17-18
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20200739.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20200739.jpg" title="The Atlantic Geoscience Society (AGS), 47th Colloquium and Annual Meeting, program with abstracts/La Société Géoscientifique de l'Atlantique, 47th Colloquium and Annual Meeting, program with abstracts; 2021 p. 17-18" height="150" border="1" /></a>




cretaceous

Whitehorse Trough record of Late Triassic-Cretaceous accretionary orogenic cycle from detrital mineral thermochronometry, British Columbia, Northwest Territories, and Yukon

Kellett, D A; Coutand, I; Zagorevski, A; Grujic, D; Dewing, K. Geological Survey of Canada, Open File 8879, 2022, 1 sheet, https://doi.org/10.4095/329781
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329781.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329781.jpg" title="Geological Survey of Canada, Open File 8879, 2022, 1 sheet, https://doi.org/10.4095/329781" height="150" border="1" /></a>




cretaceous

Geochemical variation in the Jurassic-Cretaceous strata of the Baccalieu I-78 well, Flemish Pass Basin, Canada: chemostratigraphic and paleoenvironmental implications

Bingham-Koslowski, N; Azmy, K. Geoscience Canada; Geoscience Canada vol. 49, no. 2, 2022 p. 75, https://doi.org/10.12789/geocanj.2022.49.188
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210643.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210643.jpg" title="Geoscience Canada; Geoscience Canada vol. 49, no. 2, 2022 p. 75, https://doi.org/10.12789/geocanj.2022.49.188" height="150" border="1" /></a>




cretaceous

Volcanism-triggered climatic control on Late Cretaceous oceans

Sun, R; Yao, H; Deng, C; Grasby, S E; Wang, C; Chen, X; Yin, R. Geochemistry, Geophysics, Geosystems (G3) vol. 23, issue 4, e2021GC010292, 2022 p. 1-9, https://doi.org/10.1029/2021GC010292
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210591.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210591.jpg" title="Geochemistry, Geophysics, Geosystems (G3) vol. 23, issue 4, e2021GC010292, 2022 p. 1-9, https://doi.org/10.1029/2021GC010292" height="150" border="1" /></a>




cretaceous

Exploring the role of High Arctic Large Igneous Province volcanism on Early Cretaceous Arctic forests

Galloway, J M; Fensome, R A; Swindles, G T; Hadlari, T; Schröder-Adams, C; Herrle, J O; Fath, J; Pugh, A. Cretaceous Research vol. 129, 105022, 2022 p. 1-26, https://doi.org/10.1016/j.cretres.2021.105022
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210274.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210274.jpg" title="Cretaceous Research vol. 129, 105022, 2022 p. 1-26, https://doi.org/10.1016/j.cretres.2021.105022" height="150" border="1" /></a>




cretaceous

Historical development of a litho- and biostratigraphic framework for onshore Cretaceous-Paleocene deposits along western Baffin Bay

Haggart, J W; Dafoe, L T; Bell, K M; Williams, G L; Burden, E T; Currie, L D; Fensome, R A; Sweet, A R. Geological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway; by Dafoe, L T (ed.); Bingham-Koslowski, N (ed.); Geological Survey of Canada, Bulletin 608, 2022 p. 107-135, https://doi.org/10.4095/321828
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_321828.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_321828.jpg" title="Geological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway; by Dafoe, L T (ed.); Bingham-Koslowski, N (ed.); Geological Survey of Canada, Bulletin 608, 2022 p. 107-135, https://doi.org/10.4095/321828" height="150" border="1" /></a>




cretaceous

Basaltic sills emplaced into organic-rich sedimentary rocks: consequences for organic matter maturation and Cretaceous paleo-climate

Bédard, J H; Dewing, K; Grasby, S E; Nabelek, P; Heimdal, T H; Yakymchuk, C; Sheih, S; Rumney, J; Deegan, F M; Troll, V. Geological Society of America Bulletin 2023, 2023 p. 1-25, https://doi.org/10.1130/B36982.1
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20230095.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20230095.jpg" title="Geological Society of America Bulletin 2023, 2023 p. 1-25, https://doi.org/10.1130/B36982.1" height="150" border="1" /></a>




cretaceous

Whitehorse Trough records Late Triassic-Cretaceous accretionary orogenic cycle in the Northern Canadian Cordillera via detrital mineral thermochronology

Kellett, D A; Coutand, I; Zagorevski, A; Grujic, D; Dewing, K; Beranek, L. Canadian Journal of Earth Sciences 2023 p. 1-25, https://doi.org/10.1139/cjes-2023-0082
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20220220.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20220220.jpg" title="Canadian Journal of Earth Sciences 2023 p. 1-25, https://doi.org/10.1139/cjes-2023-0082" height="150" border="1" /></a>





cretaceous

Arctic Edmontosaurus lives again -- a new look at the 'caribou of the Cretaceous'

(Perot Museum of Nature and Science) Published in PLOS ONE today, a study by an international team from the Perot Museum of Nature and Science in Dallas and Hokkaido University in Japan further explores the proliferation of the most commonly occurring duck-billed dinosaur of the ancient Arctic as the genus Edmontosaurus. The findings reinforce that the hadrosaurs -- dubbed 'caribou of the Cretaceous' -- had a geographical distribution of approximately 60 degrees of latitude, spanning the North American West from Alaska to Colorado.




cretaceous

Cretaceous insect discovered with extremely weird antennae

Amber from the Cretaceous period trapped a leaf-footed bug with extremely long and wide antennae, which may have helped disguise the insect or confuse predators




cretaceous

Erratum for 'The Chalk Group (Upper Cretaceous) of the Northern Province, eastern England - a review, Proceedings of the Yorkshire Geological Society, 62, 153-177




cretaceous

On the Cretaceous origin of the Order Syracosphaerales and the genus Syracosphaera

New scanning electron microscope observations of unadulterated calcareous nannofossil assemblages on lamina surfaces of Cretaceous Tanzania Drilling Project sediments reveal high diversity in the <3 µm size-range and high abundances of small and frangible morphologies. These assemblages prompt comparison to modern assemblages, which show similar high diversity and abundance of very small and fragile taxa, although these assemblages are generally not preserved in the fossil record due to taphonomic filtering. Not only are there broad similarities between the general composition of modern assemblages and those of the Tanzanian lagerstätte, but also our discovery of several new Cretaceous taxa provides evidence for greatly extended fossil lineages of extant orders, with implications for both deep-time biodiversity divergence and survival through the end-Cretaceous mass extinction. Our findings include: new species that are the first-recorded Mesozoic representatives of the extant Syracosphaeraceae and Papposphaeraceae; potentially previously unrecorded diversity in the Mesozoic Calciosoleniaceae, another extant order, represented by extant species that have been described already; and new species and unusually high abundances of the Mesozoic Stephanolithiaceae. We also highlight the extended range of an incertae sedis Cenozoic genus, Ellipsolithus, into at least the Turonian.

Here, we describe seven new miniscule to very small Cretaceous species: Syracosphaera antiqua, S. repagula, Pocillithus macleodii, P. crucifer, Stradnerlithus wendleri, S.? haynesiae and Tortolithus foramen.




cretaceous

Could you survive the Cretaceous period? / by Eric Braun ; illustrated by Alessandro Valdrighi

Braun, Eric, 1971- author




cretaceous

Investigation of cretaceous molluscan shell material for isotopic integrity




cretaceous

The molluscan and brachiopod fauna of the Late Cretaceous Pierre Shale (Baculites compressus/Baculites cuneatus biozones) near Kremmling, Colorado




cretaceous

Isotope paleontology of selected molluscs from the upper Pierre Shale (late Campanian-early Maastrichtian) of the Cretaceous Western Interior Seaway of North America




cretaceous

Cover-collapse sinkhole development in the Cretaceous Edwards limestone, central Texas




cretaceous

Lower cretaceous limestones from the northern part of Pădurea Craiului (Osoui Hill and Subpiatră sections): Biostratigraphy and preliminary data on microbial structures




cretaceous

Quantitative reconstruction of early cretaceous paleoclimate using paleosol carbonates in China




cretaceous

Orogeny and the collapse of the Devonian Prairie Evaporite karst in Western Canada: impact on the overlying Cretaceous Athabasca Oil Sands