What are the concordant and discordant igneous structures?

What are the concordant and discordant igneous structures?

DISCORDANT  A discordant igneous rock body cuts across the pre-exiting rock bed.  A dike is an example of discordant rock bodies. 2. CONCORDANT  A concordant igneous rock body runs parallel to the pre-existing bedrock.  Laccoliths and sills are examples of concordant igneous rock bodies.

What are examples of concordant plutons?

Laccoliths are concordant plutons that follow the existing rock layers and push up overlying strata to form an intrusion that is mushroom-shaped in cross section, as exemplified by the Henry Mountains in Utah. Laccoliths tend to be circular, or nearly so, in map view and less than approximately 5 mi (8 km) in diameter.

Is volcanic neck concordant or discordant?

It is a concordant body, with flat bottom and convex upward. It is dome or mushroom shaped….

Intrusion in Unfolded Region Intrusion in Folded Region
Discordant Forms Dykes Cone Sheet Volcanic Neck Ring Dykes Discordant Batholiths Chonolith

What is the difference between a discordant and a concordant intrusive igneous rock body?

Concordant: In a similar manner, the concordant rock masses necessarily run parallel to the structure of the country rocks in which they occur. If the country rock be made up of sedimentary bedding, a concordant intrusive mass should run parallel to the bedding planes while a discordant body must cut across them.

What is the difference between concordant structure and discordant structure?

A sill is concordant with existing layering, and a dyke is discordant. If the country rock has no bedding or foliation, then any tabular body within it is a dyke. Note that the sill-versus-dyke designation is not determined simply by the orientation of the feature.

What is a discordant pluton?

[di′skȯrd·ənt ′plü‚tän] (geology) An intrusive igneous body that cuts across the bedding or foliation of the intruded formations.

What is the difference between a discordant and concordant coastline?

Coastlines where the geology alternates between strata (or bands) of hard rock and soft rock are called discordant coastlines. A concordant coastline has the same type of rock along its length. Concordant coastlines tend to have fewer bays and headlands.

What is the difference between discordant and concordant coastline?

Is concordant intrusive or extrusive?

concordant pluton Intrusive igneous body whose boundaries parallel the layering in the country rock. (See also discordant pluton)
country rock Any preexisting rock that has been intruded by a pluton or altered by metamorphism.

What are concordant bodies?

Concordant Bodies are those organizations that continue the teachings of the first three degrees of Masonry and other Bodies are Appendant and affiliated with Freemasonry. Many Concordant/Appendant Bodies require membership in a Blue Lodge prior to joining.

What is concordant and discordant?

A pair of observations is concordant if the subject who is higher on one variable is also higher on the other variable. A pair of observations is discordant if the subject who is higher on one variable is lower on the other variable.

What is the difference between concordant and discordant?

What are concordant and discordant coasts?

What is concordant and discordant geography?

A concordant, or longitudinal type coastline occurs where beds, or layers, of differing rock types are folded into ridges that run parallel to the coast. A discordant coastline occurs where bands of different rock type run perpendicular to the coast.

Why are concordant and discordant coastlines important?

A concordant coastline occurs where the bands of differing rock types run parallel to the coast. The outer hard provides a protective barrier to erosion of the softer rocks further inland. Sometimes the outer hard rock is punctured allowing the sea to erode the softer rocks behind.

What is concordant bodies in geology?

[kən ′kȯrd·ənt ¦bäd·ē] (geology) An intrusive igneous body whose contacts are parallel to the bedding of the country rock. Also known as concordant injection; concordant pluton.

How do you find concordant and discordant pairs?

A pair is concordant if the subject ranked higher on X also ranks higher on Y. The pair is discordant if the subject ranking higher on X ranks lower on Y. The pair is tied if the subjects have the same classification on X and/or Y.