Results 71 to 80 of about 310,165 (420)
The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary
Science, 2010 The Fall of the Dinosaurs According to the fossil record, the rule of dinosaurs came to an abrupt end ∼65 million years ago, when all nonavian dinosaurs and flying reptiles disappeared.
P. Schulte +40 more
semanticscholar +1 more source
Response and Recovery of the Comanche Carbonate Platform Surrounding Multiple Cretaceous Oceanic Anoxic Events, Northern Gulf of Mexico [PDF]
, 2015 The ubiquity of carbonate platforms throughout the Cretaceous Period is recognized as a product of high eustatic sea-level and a distinct climatic optimum induced by rapid sea-floor spreading and elevated levels of atmospheric carbon-dioxide.
Da-Gama, Rui O.B.P. +5 more
core +1 more source
PLoS Biology, 2018 Pterosaurs were the first vertebrates to evolve powered flight and the largest animals to ever take wing. The pterosaurs persisted for over 150 million years before disappearing at the end of the Cretaceous, but the patterns of and processes driving ...
N. Longrich, D. Martill, B. Andres
semanticscholar +1 more source
Craton Destruction Induced by Drastic Drops in Lithospheric Mantle Viscosity
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract The disruption of the mantle roots of cratons is common after cratonization. Craton destruction, which is characterized by severe lithospheric thinning, extensive thrust and extensional deformation, basin filling, and intense thermal activities, is relatively rare and is generally attributed to intensely reduced viscosity contrasts between the
Lu Wang +3 more
wiley +1 more source
Rifts, orogens, cratons, and global tectonics: Introduction
Геодинамика и тектонофизика, 2017 A key role in developing the Earth theory is played by comparative studies of orogens, rifts, and platforms in the equatorial, middle and high latitudes of Asia and the adjacent Arctic regions.
S. V. Rasskazov
doaj +1 more source
Gyrochorte “highways” and their environmental significance in shallow-marine sediments [PDF]
Acta Palaeontologica Polonica, 2020 The reworking of a trace by a subsequently following organism represents a so-called sequorichnial behavior and leads to formation of a “burrowing highway”. Burrowing highways occur more frequently than assumed in the fossil record.
Andreas Wetzel +2 more
doaj +1 more source
Tectonics, Volume 41, Issue 12, December 2022., 2022 Abstract Orogenic wedges are common at convergent plate margins and deform internally to maintain a self‐similar geometry during growth. New structural mapping and thermochronometry data illustrate that the eastern Greater Caucasus mountain range of western Asia undergoes deformation via distinct mechanisms that correspond with contrasting lithologies ...
A. R. Tye +4 more
wiley +1 more source
Nikolay Ivanovitch Karakash - an outstanding scientist-naturalist
Известия высших учебных заведений: Геология и разведка, 2015 The 2016 year is a year of the 100th anniversary of the death of the outstanding Russian geologist and paleontologist, one of the first investigators of Cretaceous deposits of Crimea and Caucasus, Nikolay Ivanovitch Karakash.
V. N. Komarov
doaj +1 more source
Textural and Lithologic Differences of Cretaceous, Tertiary, and Quaternary Gravels of South Arkansas [PDF]
, 1987 Stream gravels have been derived from the Ouachita Mountains since at least Cretaceous times. Past studies have assigned ages to gravel deposits in the basins of the Saline and Little Missouri Rivers on the basis of altitude above local floodplains. This
Wood, Lesli
core +2 more sources
Volcanic ash as a driver of enhanced organic carbon burial in the Cretaceous
Scientific Reports, 2018 On greater than million year timescales, carbon in the ocean-atmosphere-biosphere system is controlled by geologic inputs of CO2 through volcanic and metamorphic degassing.
Cin-Ty A. Lee +5 more
semanticscholar +1 more source