Isn’t it a little ridiculous that what we know about the surface of planet Mars or Venues is more than what we know about Earth’s oceans?!
Geologists in the early nineteenth century speculated that the ocean floors were dull expanses of mud, featureless and flat. For centuries, naturalists also thought that the oldest rocks on Earth were on the ocean floors. They believed that the present-day ocean basins formed at the very beginning of the Earth's history and throughout time they had slowly been filling by a constant rain of sediment from the lands. Data gathered since the 1930's have enabled scientists to view the seafloor as relatively youthful and geologically dynamic, with mountains, canyons, and other topographic forms similar to those found on land. The seafloor is no more than 200 million years old--a "young" part of the globe's crust compared to the continents which may contain rocks nearly 20 times that age.
The revolutionary theory of plate tectonic develops when information collected from oceans floor since 1950. Sea level changes have been understood in the light of new concepts; processes of sedimentation and changes in coastlines are looked at with new techniques and understanding
Marine geology is a relatively new division of geology; in fact it’s a combination of several disciplines like, geophysics, tectonic, oceanography, sedimentology and it uses GIS and remote sensing techniques widely.
Geologists in the early nineteenth century speculated that the ocean floors were dull expanses of mud, featureless and flat. For centuries, naturalists also thought that the oldest rocks on Earth were on the ocean floors. They believed that the present-day ocean basins formed at the very beginning of the Earth's history and throughout time they had slowly been filling by a constant rain of sediment from the lands. Data gathered since the 1930's have enabled scientists to view the seafloor as relatively youthful and geologically dynamic, with mountains, canyons, and other topographic forms similar to those found on land. The seafloor is no more than 200 million years old--a "young" part of the globe's crust compared to the continents which may contain rocks nearly 20 times that age.
The revolutionary theory of plate tectonic develops when information collected from oceans floor since 1950. Sea level changes have been understood in the light of new concepts; processes of sedimentation and changes in coastlines are looked at with new techniques and understanding
Marine geology is a relatively new division of geology; in fact it’s a combination of several disciplines like, geophysics, tectonic, oceanography, sedimentology and it uses GIS and remote sensing techniques widely.
1 comment:
Thanks Majid
Now we are heating up!
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