b. heat
c.extreme pressure
d. weathering
The option B is correct.
The primary agent of contact metamorphism is heat.
Further Explanation:
Contact Metamorphism:When magma is injected towards the surrounding rock, the changes that take place are referred as Contact Metamorphism.
The greater changes take place when the magma touches rock because the temperatures roses as the distance between the boundary and the magma decreases and reaches the highest when it touches the rock or the boundary. The igneous rocks that are formed around from the cooling of the magma arereferred as a metamorphosed zone or a contact metamorphism aureole.The change that occurs is due to chemically active fluids, heat and pressure.
The ore minerals are formed by the process of metasomatism near or at the contact zone. The aureoles show different degrees of metamorphism spreading from the contact area to metamorphosed rock.Therefore,the primary agent of contact metamorphism is heat.
Therefore, the option B is correct.
Learn more:
Answer details:
Grade: High School
Subject: Geology
Chapter: Landforms
Keywords:The primary agent of contact metamorphism is, flowing water, heat, extreme pressure, weathering, metasomatism, igneous rocks, magma
The primary agent of contact metamorphism is:
(B) Heat
Contact metamorphic rocks are formed due to the influence of magma intrusion at very high temperatures. The temperature is very high because it is located close to the magma. The word metamorphic was taken from the Greek words meta and morph. Meta means change, and morph means form. So, we can conclude that metamorphism is the process of changing rock form.
The primary agent of contact metamorphism is the heat. High temperatures come from magmas injected in the surrounding solid rock. Marble is one of the examples of contact metamorphic process. It is created from limestone that has been subjected to heat.
Besides the contact metamorphism, there are two other processes such as dynamo metamorphism, and pneumatolytic metamorphism. Dynamo metamorphism is influenced by high pressure, but pneumatolytic metamorphism is influenced by gases and chemicals.
Subject: Geography
Chapter: The Dynamics of the Lithosphere and Its Impact on Life
Keywords: metamorphic rocks, marble, metamorphic rock factors, the primary agent of metamorphic, examples of metamorphic rocks
Answer:
How did the Edens Expressway affect the region, and how did the Northwest and East-West Tollways affect Oak Brook and Schaumburg?
The Edens Expressway affected the region by developing and high speed the settlement in Skokie Valley.
The northwest, as well as the east tollways, easied the access to different undeveloped areas like Oak Brook and Schaumburg.
Explanation:
The Edens Expressway is a driveway built-in 1933 in Chicago. It was built as part of the famous "Plan of Chicago" as an answer to the brand new need of urban communication by car in the earlies 1910s and 1920s. Allowing the communication of zones that weren't connected and their development. The East and West Tollways also allowed the urban access to areas like Oak Brook and Schaumburg which were undeveloped areas that thanks to the construction became developed and helped the zone achieve speed development and an increase in the quality of life of the inhabitants.
b. Tectonic
c. Transform
d. Convergent
Answer: (B) Tectonic
Explanation:
Divergent, transform and the convergent are the three main type of the plate boundary. Tectonic boundary is basically refers to the resultant of the two plates of the tectonic that sliding each other in the form of the transform boundary.
The one of the most famous transform boundary is the san Andrea. The large scaling motion is mainly describing about scientific theory which is known as tectonic plates. The other options are the types of the plate boundaries.
Therefore, Option (B) is correct.