GEOLOGY
STRATIGRAPHY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
freshwater rivers flow to the ocean
|
|
|
saltwater fish are found in some mountain streams
|
|
|
dinosaur bones have been discovered in the mountains
|
|
|
marine fossils have been found on the peaks of some mountains.
|
Detailed explanation-1: -Shells, pebbles and marine fossils are found in the limestone beds of the tallest and youngest mountain ranges of the Himalaya, a geological evidence that proves that the Himalayas rose from the Tethys Sea.
Detailed explanation-2: -Which of the following best explains how scientists know that some mountains were once at the bottom of an ocean? Dinosaur fossils have been found in the mountains.
Detailed explanation-3: -The deepest sediment contains the oldest fossils, while the surface sediment contains fossils that were deposited within the past few years. One of the simplest ways of working out what the ocean was like in the past is to count the different species of tiny fossil plankton that can be found in such sediments.
Detailed explanation-4: -These are the parts of the ocean where there is too little oxygen to support large animals. Fossils are also a key to establishing baseline data. Historic collections tell us exactly where different animals and plants lived before plastics, pollution, overfishing and the major rise in carbon dioxide.
Detailed explanation-5: -The layers above the Dakota are also rich in marine fossils. The Fort Hayes Limestone and Codell Sandstone, exposed in Red Rock Canyon and many other areas, contain abundant ammonites, bivalves, and shark teeth. Major localities in which Mesozoic footprints (mostly dinosaurs) have been found.