In which of the following sedimentary environments would you think muddy sedi...

In which of the following sedimentary environments would you think muddy sediments might accumulate? (Note that more than one answer may be correct. In this case, choose all the correct answers possible.)

Show transcribed image textQuestion 7 3 pts In which of the following sedimentary environments would you think muddy sediments might accumulate? (Note that more than one answer may be correct. In this case, choose all the correct answers possible.) O in a lake in the floodplain of a river in the relatively near shore ocean below "wave base" in the very deep ocean, far from shore in the intertidal area of the ocean

Ans.

Muddy sediments are mixture of mainly clay and silt. Such fine grained sediments are transported as suspension load. For the settling of muddy sediments, a low energy environment is required. When the energy of the transporting agent falls, the muddy sediments gets setteled down.

In the deeper part of the lake, the water is stagnant and the energy is low. It helps in deposition of the muddy sediments. When the water level in the fluvial system is at bank full stage, the water from the river flows out into the flood plain. Sudden spread out of flow causes fall in the energy of the water. This leads to the deposition of muds, silts and clays.

In the deep ocean basin, the wave energy do not have any effect at the ocean floor. The energy is very low in this environment, which facilitates the deposition of muddy and clayey sediments. Intertidal zones are depositional coast in macrotidal setting, which get exposed during low tide and submerged during high tide. Water flooding over these areas, spreads out and looses energy quickly. Only suspended sediment load are carried out and deposited when the water becomes still at high tide. Hence, intertidal zone of ocean also fascilitates the deposition of muds as mud flats. So, the correct answer for the question would be option a, b, d, and e.  

What are muddy sediments?

"Muddy sediment is one of the maximum, not unusual , aquitards. During the compaction of sediments, the strain and temperature of the layers accelerated with depth, all through which complicated physical, chemical and organic reactions took place.

During this time, a big quantity of the pore water, which interacts with microbes, natural depend and minerals withinside the mud, could be discharged into adjoining aquifers. Numerous efforts through geologists have supplied evidence, indicating that a number of the components (which include ions and nutrients) in groundwater originate from muddy sediments. For example, a lake or a watercourse, wherein big volumes of sediment accumulate".

What is a sedimentary environment ?

A sediment or deposition environment is a place at the floor of the earth, which includes a lake or stream, wherein big volumes of sediment accumulate. All drop-off environments are certainly considered one among 3 environments: terrestrial, coastal, and marine. , every with its personal environmental elements and sedimentary deposits, constitutes a sedimentary environment. For example, waterways are made from canals, sandbanks, dikes, and floodplains.

Where muddy sediments may accumulate ?

In lakes
Most lakes get water contributed by one or more streams furthermore as precipitation directly into the lake. As water from these arrives at a lake, stream rate drops terribly rapidly, depositing the coarsest sediment at the lake-shore and forming a delta.

Farther from shore, because the water continues to lose velocity, finer and finer grained sediment falls to the lake bottom. solely within the deepest part of the lake is water movement slow enough to allow the best grained sediment to accumulate. This produces skinny layers of clay.

Hence, this is often the right option.

In the floodplain of a river.
Water transports and deposits terrigenous sediments on land.Streams are the maximum substantial terrestrial sedimentary environment.

Streams certainly make meander aleven though now no longer via way of means of all rivers and coarse-grained sediments acquire alongside the interior of meanders in which water pace decreases, forming sand and gravel bars. When flood-water overflows a stream’s banks, fine-grained sediment accumulates at the land surface, or floodplain, adjoining to the channel. Coarser sediment collects at the channel banks for the duration of floods, forming a slim deposit referred to as a levee.

Hence, this feature is likewise correct.

In the fairly close to shore beneath the " wave base ".
A wave base is the intensity below a water mass beneath which wave motion ceases to disturb the sediments. It is the intensity in a frame of water (as a lake or sea) at which wave movement turns into inappreciable. It is the downward restriction to which waves can pass backside particles.

Hence, in a cumulative statement, we are able to say that that is additionally the precise statement and is the correct option.

In the very deep ocean, a long way from shore
Sediments can also be additionally collected and be preserved simply everywhere withinside the oceans. Even further from land, the monotonous abyssal plains begin. Here in the main clay-sized sediment paperwork sheets up to one km thick. These deposits, composed of sediments that settle through the water column from shallow depths, skinny to a feather aspect on the oceanic ridges wherein new seafloor clay deposit. Abyssal sediments are normally a combination of 3 grain types: carbonate muds and siliceous muds of biogenic (organic) origin, and crimson clays of terrigenous origin.

Hence , that is additionally the right option.

In the intertidal place of the ocean.
The intertidal sector is an severe surroundings as it continuously reports drastic modifications.

Anything residing withinside the intertidal sector need to be capable of continue to exist modifications in moisture, temperature, and salinity and face up to sturdy waves.

While situations withinside the intertidal sector may be severe, no dust deposition can be occured.

Where the land meets the ocean, movements among terrestrial and marine procedures purpose sedimentary environments to be complicated. In regions wherein wave strength is low and the tidal variety (the distinction among excessive tide and occasional tide) is likewise low, terrestrial procedures commonly dominate. For example, sediments flowing into the ocean from a river will shape a delta. If wave strength is excessive and tidal variety low, the river’s sediments can be remodeled right into a seashore or barrier island. However, if tidal variety is excessive, tidal currents flood the river mouth daily, shape estuary, with scattered sand bars.

When excessive tide methods and tidal currents float landward, the marsh can be flooded. As the water degree drops in the direction of low tide, tidal currents float seaward, exposing the marsh to the elements. If no barrier island is present, coasts are easy with just a few river mouths and coastal marshes to interrupt the monotony of lengthy stretches of seashore.

Hence , this feature isn't correct.

Q7: in this question all the option given are correct. Deposition of muddy sediments can occur in a lake, in a flood plain of river, in the relatively near shore ocean below wave base,in the very deep ocean far from shore and in the inter tidal area of the ocean. In these region deposition takes place due to low velocity and current action of water. As the velocity of flow reduces the sediments will start settle down at bottom and get deposited. These sediments are carried to in this regions by wind, rivers, and glacier.