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3 years ago

What are life examples of folding+faulting and Intrusion?

1 answer:

3 0

A geological fold occurs when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved as a result of permanent deformation. Synsedimentary folds are those due to slumping of sedimentary material before it is lithified. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds. They occur singly as isolated folds and in extensive fold trains of different sizes, on a variety of scales.

Folds form under varied conditions of stress, hydrostatic pressure, pore pressure, and temperature gradient, as evidenced by their presence in soft sediments, the full spectrum of metamorphic rocks, and even as primary flow structures in some igneous rocks. A set of folds distributed on a regional scale constitutes a fold belt, a common feature of orogenic zones. Folds are commonly formed by shortening of existing layers, but may also be formed as a result of displacement on a non-planar fault (fault bend fold), at the tip of a propagating fault (fault propagation fold), by differential compaction or due to the effects of a high-level igneous intrusion e.g. above a laccolith.

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Describe the effect of untreated wastewater on the chemical, physical and biological quality of urban streams or rivers.

aleksklad [387]

Answer:

Waste water is any water that is affected by human use and is combination of all domestic, industrial and agricultural stuffs.

Explanation:

It can be also called as the stormwater or surface runoff, or sewer infiltration. This type of water can include the domestic wastes involved in households like toilet flushes, dishwashers, washing machines, and detergents. This type of water in developing countries if often treated with septic tanks, drain fields, and onsite sewage systems.

Chemical or physical pollutants include heavy metals, organic and inorganic soluble matter such as urea, gases as hydrogen sulfide, various oxides and toxins of pesticides and methane.

Use of micropollutants like plastics, and thermal pollutants like heat energies derived from the power station and industrial manufactures. Certain biological sources of pollutants like Bacteria, Virus, and Protozoa, and parasites like organisms.

It can include parasitic like insects, arthropods, and others that reduce the biological oxygen capacity of the freshwater stream and decline in the fish population due to the nutrification of water and contaminants due to the wastewaters.

3 0

3 years ago

Which of the following are common tectonic settings associated with volcanic activity?Select all that apply.

bagirrra123 [75]

Answer:

Options (A), (B), (C), and (D)

Explanation:

The volcanic activity refers to the eruption of magma at the surface of the ocean floor and continental land areas, forming volcanoes.

Some of the tectonic settings that are associated with volcanic activity are as follows-

Mantle plumes- These are the large uprising bodies of magma that are generated due to the formation of convection current in the mantle. These are localized body and are located away from the tectonic boundaries. For example, Hawaii is formed as the plates moved over the mantle plumes.

Continental rifts- This refers to the eruption of magma at the surface of the continents, due to the divergent motion of two continental plates. It results in the formation of a rift, rift valley and then later forms an ocean.

Island arcs- These are formed due to the collision of two oceanic plates, where the volcanoes are formed on the lighter oceanic plate due to the rising up of magma.

Continental arcs- These are formed due to the collision between an oceanic and a continental plate, where the volcanoes are formed due to the uprising of magma in the lighter continental plates.

6 0

4 years ago

Go to my latest question and please answer it correctly.PLEASE HURRY ASAP

Leona [35]

Aight.

It is already answered tho...

4 0

3 years ago

Explain why Wegner's use of shorelines to match continents in his reconstruction of Pangaea was criticized by other geoscientist

Lynna [10]

This is because it is also to be seen as a jigsaw puzzle
Because the southwest part of southern America fit in at the southeast of Africa

8 0

3 years ago

.Ice scrapes up a jumble of sediment as it moves across land. Sediments in Heinrich layers are ______. *

cluponka [151]

The sediments located in Heinrich layers contain almost exclusively ice-rafted detritus, known as IRD.

Heinrich layers are layers of sediment in the North Atlantic. These sediments have consist of high amounts of debris in Foraminiferida shells brought by ice. This composition explains how these layers function as a historical record of major ice releases.

These layers are formed from huge releases of ice of the Hudson Strait ice stream. The North Atlantic cores of sediment found in these layers are badly sorted and lack almost any foraminifera, being composed of primarily ice-rafted detritus (IRD).

These IRDs are described as sediments of no particular size that are carried by floating ice until they are introduced into the water and mix into the environment. This Ice carries debris located within it in the way a raft would carry a person, by allowing it to float on the surface of the water

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5 0

2 years ago