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The oldest layers of sea floor would exist at the bottom of the Marianas Trench, where oceanic plate subduction is occurring. The subducting oceanic plate is less than 200 million years in age.
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How are rocks near continents different from rocks found near centers of seafloor spreading?
Rocks near continents(on the margins of oceanic basins) are generally older and rocks near a center of sea floor spreading are younger
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
Where does the new rocks form on the sea floor?
Forms by lava from volcanoes on the sea floor
Process in which new sea floor forms as older sea floor is pulled apart?
sea-floor spreading
How do rocks along the central valley of the mid ocean ridge provide evidence for sea floor spreading?
because the scientists found that the farther the rocks the older the rocks were. so the youngest rocks were found near the mid-ocean ridge. this showed that sea-floor spreading took place. +++ The primary evidence is "magnetic striping": remnant magnetising by the Earth's magnetic field of the iron compounds in the basalt forming the ocean floor. The magnetic traces are parallel to the spreading-ridges, and their polarity reflect the field's periodic reversal. The further from the ridge, the older the stripes. The rock is imprinted with the magnetism as it cools below a certain point in being eruped along the ridge.
Are older rocks on the ocean floor found near deep sea trenches?
Yes
How are rocks near continents different from rocks found near centers of seafloor spreading?
Rocks near continents(on the margins of oceanic basins) are generally older and rocks near a center of sea floor spreading are younger
Which theory explains why rocks found on the ocean floor are younger than found on continents?
Sea Floor Spreading
Which theory explains why rocks found on the ocean floor are younger than those. Found on continents?
Sea Floor Spreading
How does evidence that rocks farther from a ridge are older than rocks closer to the ridge support the idea of sea floor spreading?
;klh
Are the rocks that make up the ocean floor older or younger than those that make up the continents?
same age. the ice caps just melted on top over the rocks at the bottom of the sea.
How would the age of the oldest rocks on the continents compare with the age of the oldest rocks on the seafloor if the rock on the continents is continually formed but not removed?
The oldest rocks on the continents would be much older than the rocks on the sea floor because the rocks on the continents are not being removed unlike the rocks on the sea floor that are made by the mid-ocean ridge are being removed by deep ocean trenches. this prossess that is occuring on the sea floor is called sea floor spreading. evidence of this is the Pacific ocean shrinking and the Atlantic ocean growing.
How old are the oldest rocks found on the sea floor?
Around 200 million years of age.
How did Harry Hess hypothesis explain seafloor spreading?
Harry Hess hypothesized that the sea floor was spreading. He explained it through the phenomena of the youngest rocks that are found only at the mid-ocean ridges. These rocks then, get progressively older when moving away from the ridge.
Where does the new rocks form on the sea floor?
Forms by lava from volcanoes on the sea floor
Process in which new sea floor forms as older sea floor is pulled apart?
sea-floor spreading
How are ocean-floor rocks and sediments evidence of seafloor spreading?
because that there are younger rocks found at ocean ridges than the ones found near deep-sea trenches
