Geology is often referred to in the plural, as the geological sciences, because it includes the branch dedicated to a specific aspect of the Earth, such as climate, mineral exploration, tectonic dynamics, and so on. By extension, it could even be applied to other stars in the solar system. Many people don't know what geology is or what its main branches are.
For this reason, we are going to dedicate this article to telling you what geology is, what its characteristics and importance are.
what is geology
Geology is the natural science dedicated to the study of the Earth. Its objective is to understand the physical composition and internal and external structure of our planet, as well as the different processes and dynamics that have allowed it to evolve from its formation to the present day. Its name is derived from the Greek words Geo, "earth," and logos, "words or knowledge."
On the one hand, geology includes theoretical knowledge, such as the process by which the Earth was formed . On the other hand, it also provides specific applications in particular fields of human activity, such as geotechnics and civil engineering, and even in the understanding and prevention of large-scale terrestrial phenomena like earthquakes, as discussed in the study of what earthquakes are and how they are measured . The importance of geology is reflected in its diverse applications, making it a critical field for understanding our environment.
branches of geology
Geology includes the following main branches, with many others not mentioned:
- Geophysics. As its name suggests, it involves the application of knowledge and perspectives of physics to study the Earth. In this way, he is interested in the fundamental dynamics that apply to life on Earth now and in the past, such as reflection and refraction, gravity, electromagnetism, radioactivity, etc. It is further divided into internal geophysics and external geophysics, depending on the depth of the planetary body in which your interest lies.
- Tectonics. He is interested in the deep structure of the earth's crust, where rocks originate that deform the earth's surface, among other things, allowing the continents to move according to their tectonic plates, capable of promoting the formation of mountains and/or causing earthquakes.
- GeochemistryLike geophysics and physics, geochemistry uses chemical knowledge and tools to understand the Earth's matter—that is, to understand how it's made and what it is, and even to be able to apply that knowledge to other planets and stars in space. It is interested in the transformation of rocks and the reactions that occur between subsurface materials.
- Stratigraphy. This branch of geology interprets, organizes and understands the remains of igneous, sedimentary and metamorphic rocks, as well as the continuity of the horizontal layers that make up the soil, called stratigraphy.
- Petroleum Geology. One of the most lucrative applications of geology involves all aspects of oil: its formation, location, reserve estimation, and exploration and extraction.
- Hydrology. As its name indicates, it is interested in water, especially water deposited beneath the surface (groundwater), and its interactions with soils, rocks, minerals and wetlands, and its different manifestations (gas, liquid and solid) and the processes that control its deposits and underground movements, which is directly related to the Hydrogeology and how climate change affects groundwater resources.
- Meteorology. It studies atmospheric phenomena and tries to predict their development. To do this, it takes into account factors such as pressure, temperature, humidity, wind, etc.
- Speleology. Branches that study the formation and morphology of underground caves and other natural caves, seeking to explore, map and collect samples to provide important information about the ecosystems of the region. Its procedures are usually carried out in a playful way, which is why it has to be called caving.
- Paleontology. It is in itself a branch of geology and natural sciences dedicated to the study of past life on our planet through the fossil evidence found in the subsoil. It is a discipline best known for discovering dinosaurs and Paleozoic life, although it is also dedicated to understanding microbial life and paleobotany.
- SeismologyThe science of tremors, volcanoes, and earthquakes and the tectonic displacements that produce them. It also provides information on seismic wave propagation, earthquake damage prevention, and earthquake education, which is fundamental to the study of earthquakes. earthquakes.
Importance
Geology is a broad and varied science. It has a wide range of applications and can be lifesaving in certain situations, such as civil engineering, seismology, and other professions. The relevance of geology is evident in areas like structural geology, which also plays a crucial role in understanding the geological environment in which economic activities take place, as discussed in structural geology.
On the other hand, it has a variety of economically lucrative uses, such as petroleum science, mineralogy, and many others. In this regard, it also plays a crucial role, as it contributes to understanding the geological environment in which these activities take place.
Furthermore, it provides a wealth of valuable information about the nature of our own planet. Geology is a source of information about Earth's past and present, in that it helps us extrapolate our knowledge to other planets and even predict our future, as mentioned in studies on the early atmosphere.
Geology vs biology and geography
Biology and geology have many points of intersection. First, they combined with paleontology to study marvelous prehistoric creatures, of which few fossils remain in the ground. Furthermore, together they study the complex relationship between life and inorganic elements. They can explain how organisms modify, transport, repair, or alter these elements as needed, leaving chemical traces that geologists can identify, even millions of years later. Paleontology is a key branch for understanding these processes throughout geological time.
Likewise, geological changes on Earth impact the course of life, as evidenced by the chaos of evolution: consider how species that were separated from other species by the separation of their habitats due to plate tectonics have taken different evolutionary paths and ended up as completely different species.
Although they are spelled similarly, geography and geology are completely different fields of study , despite their apparent proximity. A geographer studies the current state of the Earth, not only its political or human divisions, but also the distribution of its mineral resources, natural features, and so on.
On the other hand, as we mentioned, the geologist primarily studies the Earth's processes from its formation to the broader panorama studied by the geographer; that is, they are interested in the Earth's past and present . However, the two disciplines complement each other, enriching their respective fields of knowledge.
Geology is a university degree program, a bachelor's degree. It usually takes five years to learn it. Its components include other disciplines borrowed from other exact sciences, such as physics, chemistry, or biology, as well as from the social sciences, such as geography, history, or economics.
This occupation provides naturalist training and technical preparation to its professionals. On the one hand, it allows them to understand the complex processes of terrestrial nature and, on the other hand, to quantify, measure and use its resources.
I hope that with this information you can learn more about what geology is and its characteristics.