What is Plutonic Rock Mass? What are the main engineering properties of plutonic intrusive rocks

Liquid magma in the deep crust slowly rises close to the surface, forming huge plutonic rock masses and smaller intrusive rocks such as, lava flows, and volcanoes. Magma forms magmatic rocks in the process of condensation, such as granite-earth movement makes rocks rise to the surface, exposed by weathering, erosion, and under the weathering and erosion of glaciers, flowing water, and wind, rocks are broken into particles, transported by glaciers, rivers, and winds, and gradually deposited in lakes, deltas, and deserts to form sedimentary layers, or in the ocean to form sedimentary rocks, such as claystone and shale. Most sediments are deposited on the continental shelf, and some are transported by high-density currents through submarine canyons to deeper ocean floors.

In large-scale orogeny, sedimentary and magmatic rocks turn into metamorphic rocks, such as schist and gneiss, under the action of high temperature and pressure. As the temperature and pressure rise further, the rock remelts, completing a cycle of rock formation.

Rocks are no stranger to humans. The first era after the evolution of animals into humans was the Stone Age. At that time, our ancestors used stones as a tool in the fight against nature.

So what is a rock, modern geology calls a stone a rock, and the word "rock" of rock is the meaning of cliffs and caves in ancient times, indicating the terrain of high mountains and steep peaks; The word "stone" refers to chimes, steles, inkstones, meteors, etc. Since the birth of geology in the 18th century, the word "rock" no longer uses the ancient meaning, and we can give such a definition to rock: rock is the natural historical product formed by various geological processes, is the basic component unit of the earth's crust, and is a solid geological body composed of minerals and amorphous materials with a certain structure and structure.

There are many kinds of rocks in appearance, but from the perspective of genesis, all rocks can be classified into three categories, namely magmatic rocks, sedimentary rocks and metamorphic rocks, which are the three major types of rocks in nature.

The difference and connection between intrusive rocks, ejective rocks + plutonic rocks and epigenetic rocks.

From the perspective of formation conditions, intrusive rocks are formed by the gradual cooling of magma intrusion into the upper part of the earth's crust. Ejecta rock is formed by the rapid cooling of magma ejecting from the surface. 2. From the perspective of distribution location, intrusive rocks are generally distributed underground, and are divided into plutonic rocks and epigenetic rocks according to different intrusion depths. Ejecta rocks are distributed on the surface.

3. Ejecta rock is a mineral rock formed by the condensation of magma ejected during volcanic eruption, most of which are composed of magmatic rock, and the texture is loose and porous. Intrusive rocks refer to igneous rocks formed by liquid magma penetrating into the tectonic cavities formed at the same time under orogeny, crystallization and condensation at depth. 4. Ejecta rock and intrusive rock belong to magmatic rock, also known as igneous rock.

All of them are formed by the cooling and solidification of magma. Its composition is mainly composed of silicate substances. Intrusive rocks are often produced by rock strains,, and rock walls, and the surrounding rocks are in contact with obvious metamorphic zones, or contact metamorphic zones.

The ejecta rock can be produced in layers, and the surrounding rock has no metamorphic zone. The content of dark minerals in the porphyry crystals of ejective rocks is generally less than that of intrusive rocks. 5. The ejecta rock is on the surface, cools rapidly, has poor crystallinity, is usually polycrystalline or amorphous, and even has cavities, and the lattice defects are serious.

Ejecta rocks are difficult to form high-quality gemstones. The intrusive rocks cool slowly, and the material has sufficient time to crystallize, and many single crystals will appear. In addition, the high pressure is also conducive to the orderly crystallization.

Summary. The main engineering properties are deep hole detection, deep hole drilling, deep hole drilling, deep hole injection, deep hole blasting, deep hole support, etc.

The main engineering properties are deep hole detection, deep hole drilling, deep hole drilling, deep hole injection, deep hole blasting, deep hole support, etc.

Can you elaborate on that a little bit more?

The main engineering properties of plutonic intrusive rocks are tensile strength and compressive strength. Tensile strength refers to the tensile ability of a rock under tensile action, and compressive strength refers to the compressive ability of a rock under compression. The tensile strength and compressive strength of plutonic intrusive rocks are low, and they are easily affected by external forces, resulting in rock failure, which affects the safety of the project.

The solutions to this problem are:1To strengthen the tensile strength and compressive strength of rock, reinforcing agents, modifiers and other methods can be used to improve the tensile strength and compressive strength of rock; 2.

Support technology, such as support net, support frame, etc., is adopted to reduce the influence of external force on the rock; 3.Adopt improved technologies, such as rock crushing, rock crushing, etc., to improve the tensile strength and compressive strength of rocks. Personal Tips:

In the construction process, attention should be paid to the tensile strength and compressive strength of the plutonic intrusion huihuiyan, and effective improvement technology and support technology should be adopted to ensure the safety of the project.

Shencheng (town high posture and filial piety) rock mass depth ().

c.>10km

d.>0km

Correct answer: "Imperial Absolute 10km".

Summary. Due to the slow cooling and certain volatile matter of plutonic intrusive rocks, the degree of crystallization of the rock is good, and the mineral crystalline particles are coarse, often medium-grained, medium-coarse-grained semi-automorphic granular structure, and mostly form huge rock bases or rock strains, such as granite, syenite, diorite, gabbro and peridotite.

Due to the slow cooling and certain volatile matter of plutonic intrusive rocks, the degree of rock crystallization is relatively good, and the mineral crystalline particles are coarse, often medium-grained, medium-coarse macro-grained semi-automorphic granular structure, and mostly form huge rock bases or rock strains, such as granite, syenite, diorite, gabbro and peridotite.

Plutonic intrusions are formed in the depths of the earth's crust (2 3 km), which are slowly cooled and solidified by magma to form holocrystalline granular rocks (granite, diorite, gabbro, etc.), and then transformed by deformation and metamorphism. <>

Can you use a mind map or ** to summarize the difference between the two of them? <>

Because I still don't understand the difference between the two? <>

Wait a minute.

Good plutonic intrusive rocks are slowly cooled due to magmatic intrusion and have enough time for the minerals to crystallize, so the intrusive rocks are coarse-grained and have a crystalline structure. The liquid magma penetrated into the tectonic cavity formed at the same time under the orogenic action, and the igneous rock formed by crystallization and condensation in the depths of the repentance was repented.

The intrusive body is an igneous rock mass composed of intrusive rocks, which is called an intrusive body.

This means that the intrusion is made of intrusive rocks.

Okay, thank you, teacher.

It takes a long time for an invasion to form.

You're welcome. If you're satisfied, please give me a thumbs up.

If you're satisfied, please give me a thumbs up.

A complete rock mass without a structural plane is the difference between rock, rock and rock mass

1. The rock mass includes rocks and the structural planes between rocks and rocks (fracture planes, joint planes, and various interlayers);

2. Rock emphasizes its own lithology and physical and chemical characteristics, while rock mass emphasizes the characteristics of rock as a geological body in the geological environment of Hungerliang, such as the nature of rock limbs, geological structure, strength, water content, etc., which contains a wider range of research content than rock.