This website uses cookies to ensure you have the best experience. Learn more

Deformation And Metamorphism Essay

618 words - 3 pages

Deformation and Metamorphism
1. Explain the difference between load pressure and directed pressure, using diagrams.

Directed Pressure
Load Pressure

Load pressure refers to when underlying rock has equal pressure exerted on it from all sides. However, directed pressure is when there is not equal forces pressing on the rock from all directions and lateral forces which cause compression and buckling of rocks.
a) What observable differences are there between rocks affected by load pressure and directed pressure?
Texture, size and shape are all things which change when a rock is subjected to directed pressure. Directed pressure caused grains to become distorted and then recrystallise to finer grained granular aggregates. A rock which has been subjected to directed pressure is also likely to be elongated into a different shape.
b) Describe three textures that result from directed pressure
Slaty Cleavage is foliation in very ...view middle of the document...

2. Explain with diagrams the difference between a horst and a graben.

A Graben is a long, narrow trough which is bounded by one or more parallel normal faults. A horst is the opposite; it is a ridge which is most commonly caused my normal parallel faults.

3. Name and discuss the four main factors which cause metamorphism
Heat and Pressure: Heat and pressure work simultaneously to begin the process of metamorphism. Heat increases with depth and respectively so does the pressure exerted on underlying rocks. Heating a rock makes the atoms in the minerals vibrate and become more mobile. Eventually the minerals break up and produce new minerals.

Fluids: Diffusion occurs through mineral grains but mainly along the boundaries and minute fractures of the rock. Diffusion is the atoms within the rock beginning to slowly move around. Small amounts of pore fluids, mostly water, greatly assist in this transfer of atoms.

Time: Time is the final factor which is necessary for metamorphism to take place. These small scale processes produce remarkable end products if given an enormous period of time to occur.

4. Describe the metamorphic changes resulting from the intrusion of a large igneous batholith.

a) What is this form of metamorphism called?
This is called Thermal metamorphism because it is caused by heat acting as a single metamorphic agent.

b) Use a diagram to show the contact aureole and how different country rocks are affected by the intrusive rock.

PINK: Limestone
GREEN: Shale
BLUE: Sandstone
BLACK: Granite Intrusion
RED: Aureole

c) Explain what factors determine the width of the aureole
There are 3 main factors which affect the width of the aureole in thermal metamorphism. The first factor is the size of the igneous body. The second factor is the temperature of the igneous body and the third factor relating to the width of the aureole is the rock it’s intruding into. Heat will travel much quicker through a porous rock such as limestone compared to other rocks.

5. Complete the following block diagrams and identify each structure.
6. Name each geological structure
a) Tilted bedding
b) Graded bedding
c) Plunging fold
d) ???

Copyright N.B.B, 2010

Other Essays Like Deformation and Metamorphism

Comparing The Moral Virtues Of Antony And Julian The Apostate

1103 words - 5 pages Roman emperor Julian the Apostate and Christian leader Antony both exhibited many qualities of character during their existence. Both of them led very distinctive lives although shared several ethical values. Book 25 of “The Later Roman Empire” and the book “Early Christian Lives” show concrete evidence of this. In the following essay, I will argue how both leaders’ lives were devoted to their religious beliefs and their mutual cardinal virtues

Living In A Cashless Society Essay

1637 words - 7 pages Money in a traditional sense no longer exists. Money is becoming much of a concept than a physical material, and most ordinary bitter have not see the reality of the switch. People today are using credit and debit cards on a regular basis and in everyday situations such as meal purchased at fast food, highway tolls, clothing, groceries, gas stations, etc. all of these means of systems could be regarded as a cashless society or world. The

The French And Indian War: The "Real" First World War

1955 words - 8 pages The Seven Years War, or more commonly referred to as “The French and Indian War”, has been called the true First World War. In this book The French and Indian War: Deciding the Fate of North America, the author and historian Walter R. Borneman paints a detailed and elaborate picture that justifies the claim of it being the first true war of global proportions. If ever there truly was a climax to the never ending feud of the European

Is The Use Of Animals In Medical Research A Necessary Measure?

1513 words - 7 pages Throughout history, animals have been used in experiments to test product safety and obtain medical knowledge that benefits both humans and animals alike. Every year there are numerous medical breakthroughs, such as medications and surgical instruments, which are tested on animals to insure their safety before they are deemed acceptable for human use. Even though the results of the experiments saved millions of human lives, they are also

Education And The Evolving Job Market

2363 words - 10 pages The lives of students today are changing. They are preparing for lives and jobs that have never before existed. If teachers hope to have a significant and worthwhile impact on these quickly changing lives, they must change the way they think, prepare, and instruct our future generations. Children cannot afford to have teachers who remain stagnant in their methods and ideals. Students crave instructors that are willing to allow them to tap

Young And Relentless

1737 words - 7 pages There are numerous influences that can be responsible of teenager’s behaviors and attitude as they develop. One factor that is important to these behaviors is parental figures being over involved or uninvolved in their children’s lives. Many of these effects include illegal substance abuse, rising sexual activity, underage alcohol consumption, and tobacco use. Studies show parental participation plays a key role in the characteristics developed

The Natural Law Theory

1231 words - 5 pages Obeying by the natural law theory is the only true and moral way to live life; especially a life lived in God’s image. God’s presence is a guiding factor to obtaining a moral and virtuous life, which can only be obtained by following the natural law theory. God created a set of laws as a supreme guide for humans to live life, like any law these laws were created to ensure wellbeing for everyone. The laws he created are the civil law, the natural

Resolved: Presidential Signing Statements Threaten To Undermine The Rule Of Law And The Separation Of Powers

1811 words - 8 pages The subject of signing statements has created much debate among the houses of Congress, government officials, and the public alike. These signing statements fall under the categories of constitutional and legislative history signing statements. Constitutional signing statements are those in which the president deems certain provisions of the legislation as unconstitutional, therefore they should not be enforced (Bradley & Posner, 2006

Oppressive Systems Of Government In Egypt And Animal Farm

1529 words - 7 pages As in Egypt, Orwell demonstrates through his allegorical novel “Animal Farm” that leaders are able to establish and maintain power over a people, and in turn create an oppressive and corrupt government system. Orwell shows the significant difference in the education and levels of knowledge in the animals, and how the government takes advantage of this difference. The split between the levels of intelligence is portrayed in the first chapter

The Pathway To Psychosis

1415 words - 6 pages “How all occasions do inform against me” is a line from act IIII, scene IIII of William Shakespeare’s Hamlet. This line, spoken by Hamlet, expresses his emotional state as he is currently overwhelmed by the death of his father, the king of Denmark, and the situation surrounding it. After Hamlet learns of his father’s death he finds out that his mother has married Claudius, Hamlet’s uncle. On top of all of that, Hamlet soon after

Rated “M” For “More Censorship Not Needed”

1241 words - 5 pages Since the moment video games became a commercial success there have been people who have pushed for unfair amounts of censorship to be placed upon the content of the games and its availability to children. These groups push for increased regulations on content but there is already an appointed group to handle this issue, the ESRB. Even though there has been an increase in mature content in the video game industry, increased censorship is not

Related Papers

Tamu Geol 101 Final Study Guide

4880 words - 20 pages being the result of the motion of the separate plates that make up the outermost 100 kilometers of earth • Earth layers- core, mantle, and crust – differ in composition/physical properties o Lithosphere- crust and uppermost mantle, down to 100 km (broken into plates) o Asthenosphere- remaining upper mantle (less-rigid/squishier/ mostly solid) • Tectonics- interactions between plates at boundaries that cause deformation of the

Jiggaboo Jim Essay

3600 words - 15 pages known as basalt. Continental crust is thicker then oceanic crust (25-75km thick vs. 4-10 km thick). Name the different types of plate boundaries? How to they move in relation to one another? Types of Boundaries: Convergent - Plates move toward one another by compressional forces. Lithosphere is destroyed and recycled. Characterized by deformation, volcanism, metamorphism, mountain building, earthquakes, and important mineral deposits

The Separation Of Capital Ownership And Control

1577 words - 7 pages The argument of whether the separation of capital ownership and control is an efficient form of organization has constantly been a controversial issue. The criticism whether the controllers’ act is in the best interest of the owners’ wills never end as long as hired managers operate management. As the number of public companies has been increasing over the course of this century, meanwhile the American style of contact based corporation has

The Versatility And Flexibility Of Oled's

1014 words - 5 pages In April 1, 2002, organic light emitting diodes gain rise in the scientific community with their published, more practical form at Ames Laboratory. “Scientists at the U.S. Department of Energy's Ames Laboratory, in collaboration with scientists at the University of Michigan, Ann Arbor, have developed and demonstrated a novel, fluorescence-based chemical sensor that is more compact, versatile and less expensive than existing technology of its