The sedimentary rocks that formed in the Newark basin during the Triassic and Ju
ID: 106419 • Letter: T
Question
The sedimentary rocks that formed in the Newark basin during the Triassic and Jurassic are mainly A Limestone with coral fossils B Red sandstone and shale C Coal D Basalt and diabase The Palisades Sill and Watchung lava flows formed from magma with A Felsic composition B Intermediate composition C Mafic composition D All of the above During the Late Cretaceous, the Interior Seaway was present A at the location of the present day Atlantic Ocean B between India and Asia C in the interior of continental North America D in the interior of continental EuropeExplanation / Answer
Answer 1 - basalt and diabase
During the Triassic period the pangea began to broke and led to the formation of rifts and grabens. These grabena were intruded by dike masses of basalt and diabse.
Later the sedimentary grabens or basins were occupied by red bed sediments