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At the end of the Cretaceous (K/T boundary) what unusual geologic phenomenon occurred that has been linked to mass extinction and the end of the dinosaurs?
Q33: Which of the following sedimentary features can
Q44: Fractures which appear in unloaded rock, yet
Q63: Lignite occurs in the prairie provinces and
Q64: Satellites like SEASAT can observe the ocean
Q83: Interbedded cherts with banded iron formations, or
Q88: Which sediment gets lithified to become shale?<br>A)all
Q96: Which one of the following statements is
Q98: What is the Jurassic Period named after?<br>A)Jura
Q172: What is the average P-wave velocity (km/sec)if
Q205: What does a sand that contains significant