A guide to Phanerozoic cold polar climates from high-latitude ice-rafting in the Cretaceous

  title={A guide to Phanerozoic cold polar climates from high-latitude ice-rafting in the Cretaceous},
  author={Lawrence A. Frakes and Jane E. Francis},
The high-latitude extent of warm-climate indicators at certain times in Earth history has been considered as evidence that the globe was ice-free for long intervals, despite theoretical considerations and results from numerical modelling experiments1,2 indicating that this was unlikely. One of the warmest periods, the Cretaceous, displays faunal and floral evidence for 'cool-temperate' to 'sub-tropical' conditions very near to the poles. However, our studies of Lower Cretaceous mudstones of… 
Warm Middle Jurassic–Early Cretaceous high-latitude sea-surface temperatures from the Southern Ocean
Although a division of the Phanerozoic climatic modes of the Earth into "greenhouse" and "icehouse" phases is widely accepted, whether or not polar ice developed dur- ing the relatively warm Jurassic
The Late Paleozoic Ice Age: An Evolving Paradigm
The late Paleozoic icehouse was the longest-lived ice age of the Phanerozoic, and its demise constitutes the only recorded turnover to a greenhouse state. This review summarizes evidence for the
The breakup history of Gondwana and its impact on pre-Cenozoic floristic provincialism
The broad succession of pre-angiosperm floras is documents, the distinctive elements of the Early Cretaceous Gondwanan floras immediately preceding the appearance of angiosperms are highlighted and it is suggested that latitudinal controls strongly influenced the composition of GONDwananFloras through time even in the absence of marine barriers between Gondwana and the northern continents.
Toward understanding Cretaceous climate—An updated review
  • W. W. Hay
  • Environmental Science, Geology
    Science China Earth Sciences
  • 2016
New data and ideas are changing our view of conditions during the Cretaceous. Paleotopography of the continents was lower than originally thought, eliminating the ‘cold continental interior paradox’
Reevaluation of the timing and extent of late Paleozoic glaciation in Gondwana: Role of the Transantarctic Mountains
Evidence from Antarctica indicates that a 2000-km-long section of the Transantarctic Mountains—including Victoria Land, the Darwin Glacier region, and the central Transantarctic Mountains—was not
Possible solutions to several enigmas of Cretaceous climate
The nature of the warm climates of the Cretaceous has been enigmatic since the first numerical climate models were run in the late 1970s. Quantitative simulations of the paleoclimate have
Mid-Cretaceous (Albian–Santonian) sea surface temperature record of the tropical Atlantic Ocean
Paleoclimate records of geologic time periods characterized by extreme global warmth such as the mid-Cretaceous are important for a better understanding of the Earth9s climate system operating in an


Polar glaciation and the genesis of ice ages
  • B. Hunt
  • Environmental Science
  • 1984
One of the outstanding, unresolved climatic questions concerns the cause(s) of ice ages over geological time1,2. A recurring theme in many hypotheses2–4 has been that land at high latitude is a
Late Cretaceous vertebrate fossils from the North Slope of Alaska and implications for dinosaur ecology
Skeletal remains of ceratopsian dinosaurs and a turtle, a dinosaur footprint, and tooth marks of a small carnivorous reptile on a freshwater clam show that the terrestrial vertebrate fauna of the
Migration of glacial centers across Gondwana during Paleozoic Era
Continental glaciation, as recorded by sedimentary facies and by pavements scoured into underlying rocks, affected northern Africa at the end of the Proterozoic Era. This glaciation was followed in
An ice-free cretaceous? Results from climate model simulations.
It is demonstrated that past changes in geography were important in bringing about climatic change, however, the meridional distribution of Cretaceous temperatures cannot be successfully simulated unless additional physical "feedback mechanisms" are included in the model.
Dinosaurs on the North Slope, Alaska: High Latitude, Latest Cretaceous Environments
Great distances of migration to contemporaneous evergreen floras and the presence of both juvenile and adult hadrosaurs suggest that they remained at high latitudes year-round, challenging the hypothesis that short-term periods of darkness and temperature decrease resulting from a bolide impact caused dinosaurian extinction.
Prefolding and premegakinking magnetizations from the Devonian Comerong Volcanics, New South Wales, Australia, and their bearing on the Gondwana Pole Path
Palaeomagnetic results from the late Middle to early Late Devonian Comerong Volcanics in the Budawang Synclinorium, Lachlan Fold Belt (LFB), New South Wales, Australia, satisfy a fold test and
An Initial Study of the Sensitivity of Modeled Cretaceous Climate to Cyclical Insolation Forcing
Some Cretaceous rhythmic sedimentation, such as the Colorado Greenhorn Formation deposited in the western interior seaway (U.S.), may have been produced by cyclic precipitation intensity change,
  • E. Barron
  • Geography, Environmental Science
  • 1983
Observations of Sediment–laden Icebergs in Antarctic Waters: Implications to Glacial Erosion and Transport
Abstract Sediment-laden icebergs are rarely sighted in Antarctic waters. However, during the recent Deep Freeze 79-USCGC Glacier expedition to the George V Coast and the south-western Ross Sea, nine