neritic zone is the geographical feature of the ocean floor that is between the shoreline and the continental slope.
neritic zone is the geographical feature of the ocean floor that is between the shoreline and the continental slope.
what geographical feature of the ocean floor is between the shoreline and the continental slope?
neritic zone
the continental shelf is the portion of the continental margin that transitions from the shore out towards to ocean. they are believed to make up 7 percent of the sea floor. the width of continental shelves worldwide varies from a 30 meters to 1500 kilometers. it is generally flat, and ends at the shelf break, where there is a drastic increase in slope angle. the mean slope of continental shelves worldwide is 0° 07’ degrees, and typically steeper closer to the coastline than it is near the shelf break. at the shelf break begins the continental slope, which can be one to five kilometers above the deep-ocean floor. the continental slope often exhibits features called submarine canyons. submarine canyons often cut into the continental shelves deeply, with near vertical slopes, and continue to cut the morphology to the abyssal plain. the valleys are often v-shaped, and can sometime enlarge onto the continental shelf. at the base of the continental slope, there is a sudden decrease in slope, and the sea floor begins to level out towards the abyssal plain. this portion of the seafloor is called the continental rise, and marks the end of the continental margin.
continental margin
during the palaeozoic era at least a few thousand kilometres of ocean floor were subducted, taking of the order of a hundred million years. sediments were deposited in the ocean floor in the form of fans formed by turbidity currents off the side of a continental slope. the flow was in the northerly direction, indicating that the continental slope was to the south. these deposits occurred during the ordovician period. the ocean floor was distant from the continental source of the sediment. towards the end of this period there were isolated parts where no turbidity currents reached and only fine clay and animal organic and silica debris were deposited into oxygen-depleted deep water. this ocean basin has been called the monaro basin. to the north west was a volcanic chain of islands, the macquarie arc, with an associated submarine trench.
geology of the australian capital territory