The sand and silt used to be layers of rock but wind and weather break it down.
Sand silt and clays deposited on the ocean floor.
2 most important types of ocean deposits are.
Southern hemisphere which hemisphere is known as the water hemisphere.
It consists of silt sand clay and gravel as well as much organic matter.
There is marked gradation of these sediments when they are deposited in the oceans.
Sand silt and clays deposited on the ocean floor are described as terrigenous sediments.
Wind erosion abrades surfaces and makes desert pavement ventifacts and desert varnish.
Much of the larger sediment requires more energy to move and usually doesn t travel as far.
The top layer of the ocean floor or oceanic crust is made of sediments that wash into it from the land or sometimes fall into it from space.
Sand silt and clays deposited on the ocean floor are described as terrigenous sediments.
Although rivers can carry a great amount of sediment the majority of sediment within the oceans is derived from the marine organisms themselves.
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion and is subsequently transported by the action of wind water or ice or by the force of gravity acting on the particles.
The particles are deposited on the sea surface then slowly settle to the deep ocean floor forming brown greenish or reddish clays.
For example sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation if buried they may eventually become.
Wind can carry small particles such as sand silt and clay.
The ocean currents and waves very often disturb the gradation and sequence of sediments.
Volcanic ash may also settle on the seafloor.
Deposition on ocean floor sedimentary rock processes.
They vary from location to location.
However small sediment silt and clay sized particles can travel through the ocean and be deposited in the abyssal plain.
The sequence of these materials from the coast towards the sea is gravel sand silt clay and mud.
There are unconsolidated sediments deposited on the ocean floor.
Alluvial deposit material deposited by rivers.
Sand silt and clays deposited on the ocean floor are described as terrigenous sediments.
The study of ocean deposits is important in understanding the rocks exposed on the earth s surface which were once laid.