Geological Age and Characteristics Phanerozoic (GSSP 1 million years ago) Major Events Phanerozoic Cenozoic Quaternary Holocene 0.01430 0.00013 [2] Human Prosperity (refer to chronology) Pleistocene 1.806 0.005 Ice Age, and a large number of large mammals became extinct. Humans have evolved into a modern state. Neogene Pliocene 5.332 0.005. Individual ape ancestors appeared in Miocene at 23.03 0.05. Oligocene of Paleogene is 33.9 0.1. Most mammals rose to 55.8 0.2 in Eocene. Paleocene 65.5 0.3. Mesozoic Cretaceous 145.5 4. Dinosaurs flourished and became extinct. Cretaceous-Tertiary extinction events, 45% of the earth's organisms became extinct, Jurassic placental mammals 199.6 0.6 birds had marsupials, Triassic angiosperm gymnosperms 2510.00.7 Paleozoic Permian egg-laying mammal dinosaurs 299.0 0.8 Permian extinction events. 95% of the living things on the earth became extinct, and Pangaea formed Carboniferous 359.2 2.5, insects flourished, reptiles appeared in coal forests, gymnosperms appeared in Devonian 416.0 2.8, fish flourished, amphibians appeared in insects, and seed plants appeared in Lycopodium, Silurian 443.7/kloc-0. The 542.0 1.0 CAMBRIAN Big Bang, the 630 +5/-30 Proterozoic Neoproterozoic Sinian Great Ice Age, the snowball event occurred in the early ice age of the earth's primitive evolution in 850, and the large creatures with spines and coagulum appeared for the first time in the 1000 extension stage. Metamorphic rock belt was formed in Mesoproterozoic narrow-band period 1200, and Rodinia supercontinent was formed in this period. With the extension of the continental shelf coverage 1400, the platform coverage has been continuously expanded, and the earliest complex multicellular organisms have appeared. Cyanobacteria and brown algae developed in 1600 caprock period, and macroalgae formed in columbia supercontinent during 1800 Paleoproterozoic consolidation period. In 2050, a large-scale orogeny took place in the mainland, cyanobacteria and bacteria flourished in 2500 and 2300, forming a world-class iron ore field. The main periods of ferrosilicon construction are the first glacial period of Archean Neoarchean in 2800, the appearance of Archean blue-green algae in the middle Archean in 3200, and the appearance of the first creature on the earth in the early Archean in 3800, namely, the Bacchus generation in 3950, the archaea generation in 4 150, the marine cryptozoic generation in 4570. On the origin and evolution of the earth: "
In various geological periods, major events in space related to the earth, the solar system and the earth have left records on the earth itself, crustal movement, rocks, structures, paleontology, geomagnetism, paleoclimate and many other aspects.
In different geological periods, different geological processes have different characteristics.
Divide the history of the earth into the following periods:
See the geological period and characteristics table for the formation period of the earth, the formation period of the crust, the pre-entering solar system, the entering solar system, the formation period of the earth-moon system and the newborn period.
The formation period of the earth
This period is the geological time from the capture of molten material in the core to the solidification of molten material on the surface.
4.6 billion years ago (? ) Years ago, the core composed of iron and nickel captured molten matter and formed the mantle. The temperature of the contact part between the mantle and the core decreases, forming an inner transition layer. The external temperature is reduced and solidified to form an external transition layer.
In this geological period, a layered earth was formed.
Crustal formation period
This period is the geological time from the solidification of molten materials on the surface to the formation of sedimentary rocks.
The molten material solidifies and shrinks, forming a mountain with cracks and valleys on the surface. The impact of cosmic celestial bodies forms large pits and depressions on the surface.
With the decrease of temperature, the water generated in the solidification process of molten materials flows and gathers in the open valleys and large pits, and the gas generated remains on the surface, forming the atmosphere.
The core captures the inhomogeneity of cosmic matter, and the uneven temperature around the surface produces atmospheric flow.
During this geological period, valleys, mountains, pits and depressions were formed on the surface. With water and atmosphere, weathering, denudation and transportation occurred, and sedimentary rocks began to form.
Pre-solar system
This period is a geological period from the formation of the crust to the entry of the earth into the solar system.
This is a geological period without sunshine.
In the early period of this period, the weathering, denudation, transportation and deposition of the earth's crust were intense, the mountains were stripped off, and huge original sediments were deposited in valleys and pits.
In the later period of this period, the crustal activity weakened, and the surface temperature gradually dropped below freezing point, forming a global glacier.
In the biological world, prokaryotes that landed on the earth began to resurrect and reproduce. Because there is no sunshine, other animals and plants that landed on the earth are dormant.
Enter the solar system
This period began when the earth entered the solar system and became a planet.
In this geological period, the earth has the light of the sun, forming a revolution and rotation around the sun, changing day and night.
Inside the earth, the core or inner sphere is biased in the opposite direction of the sun's gravity, not the center of the earth.
In the crust, due to the rotation of the earth, centrifugal force from the poles to the equator is formed; Under the action of the sun's gravity, as the earth rotates from west to east, the crustal material forms a movement from east to west. Forming mountains and plateaus, forming valleys, depressions and plains.
In the biological world, from the explosive appearance, the resurrection began.
With the evolution of the solar system, when the earth entered the solar system, the included angle between the orbital plane and the equatorial plane of the sun was about 23 26'. Now, the orbital plane of the earth is almost parallel to the equatorial plane of the sun, and the axis of the earth has changed from a vertical orbital plane to an inclined orbit, forming a year-round change.
In rock buildings, there will be a lot of limestone.
Earth-moon system formation period
This period began when the moon was captured by the earth and the earth-moon system was formed.
The rotation of the moon around the earth changes the gravity field and magnetic field of the earth. Under the sway caused by the gravity of the moon, the outer circle of the earth rotates, leading to bipolar movement.
In the biological world, animals and plants have undergone great variation or evolution, forming tall trees and large animals.
Freshman period
This period began when a comet hit the earth.
The comet split in the solar system and formed an asteroid belt around the sun.
Comets consist of rocks, ice and the atmosphere. There are all kinds of creatures in the ice.
During this geological period, the earth has added water, atmosphere and new biological species.
The original organism mutates or evolves.
Geological age and characteristics surface geology
Periodic feature generation
Week (boundary)
isotope
age
Ma Jin
enter
also
sun
tie
time
Time and place
moon
tie
shape
success
time
Freshmen in college
time
This period began when a comet hit the earth.
The comet split in the solar system and formed an asteroid belt around the sun.
Comets consist of rocks, ice and the atmosphere. There are all kinds of creatures in the ice.
During this geological period, the earth has added water, atmosphere and new biological species. The original organism mutates or evolves. new
grow
generation
(border) display
grow
Time (considered as past, present and future)
Gold
—
This period began when the moon was captured by the earth, forming the earth-moon system.
The rotation of the moon around the earth changes the gravity field and magnetic field of the earth. Under the sway caused by the gravity of the moon, the outer circle of the earth rotates, leading to bipolar movement.
In the biological world, animals and plants have mutated, forming tall trees and large animals. middle
grow
generation
(Boundary) 65
—
This period began when the earth entered the solar system and became a planet.
In this geological period, the earth has the light of the sun, forming a revolution and rotation around the sun, changing day and night.
Inside the earth, the core or inner sphere is biased in the opposite direction of the sun's gravity, not the center of the earth.
In the crust, due to the rotation of the earth, centrifugal force from the poles to the equator is formed; Under the gravity of the sun, the crust moves from east to west, because the earth rotates from west to east. Forming mountains and plateaus, forming valleys, depressions and plains.
In the biological world, from the explosive appearance, the resurrection began.
With the evolution of the solar system, when the earth entered the solar system, the included angle between the orbital plane and the equatorial plane of the sun was about 23 26'. Now, the orbital plane of the earth is almost parallel to the equatorial plane of the sun, and the axis of the earth has changed from a vertical orbital plane to an inclined orbit, forming a year-round change.
In rock buildings, there will be a lot of limestone. archaic
grow
generation
(Boundary) 250
—
The period before 543 entered the solar system is the geological period from the formation of the crust to the entry of the earth into the solar system.
This is a geological period without sunshine.
In the early period of this period, the weathering, denudation, transportation and deposition of the earth's crust were intense, the mountains were stripped off, and huge original sediments were deposited in valleys and pits.
In the later period of this period, the crustal activity weakened, and the surface temperature gradually dropped below freezing point, forming a global glacier.
In the biological world, prokaryotes that landed on the earth began to resurrect and reproduce. Because there is no sunshine, other animals and plants that landed on the earth are dormant. Prokaryotes began to reproduce. Proterozoic era
(on) 543
—
3800 crustal structure
This period is the geological time from the solidification of molten materials on the surface to the formation of sedimentary rocks.
With the decrease of temperature, the water generated in the solidification process of molten materials flows and gathers in the open valleys and large pits, and the gas generated remains on the surface, forming the atmosphere.
The core captures the inhomogeneity of cosmic matter, and the uneven temperature around the surface produces atmospheric flow.
In this geological period, with water and atmosphere, weathering, denudation and transportation took place, and sedimentary rocks began to form. Archean. Also known as AZOIC
(Yu) 3800
—
4600 Earth Formation
This period is the geological time from the capture of high-temperature molten materials in the core to the solidification of molten materials on the surface to form the original crust of the earth.
4.6 billion years ago (? ) Years ago, the core made of iron and nickel captured high-temperature molten substances and formed a thick molten layer. The temperature of the contact part between the molten layer and the core is reduced to form an internal transition layer; Forming an outer transition layer at the contact position with the shell; The molten layer forms a liquid layer.
In this geological period, a layered earth was formed.
The molten material solidifies and shrinks, forming a mountain with cracks and valleys on the surface. The impact of cosmic celestial bodies forms large pits and depressions on the surface. Early Proterozoic
(Yu) 4600
—
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