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✳️Cinnabar is a toxic mercury sulfide mineral with a chemical composition of HgS. 🔷It is the only important ore of mercury. It has a bright red color that has caused people to use it as a pigment, and carve it into jewelry and ornaments for thousands of years in many parts of the world. Its […]
🔷Kimberlites, named after the town of Kimberly, South Africa, where they were first described, are volcanic rocks that originate in Earth’s mantle.🔷They are mined exclusively for diamonds. The photo shows the “Big Hole” at Kimberly.🔷The Hole was mined from 1871 to 1914 and reached a depth of 240 m below the surface. Subsequently it filled […]
Geological Time Scale The geological time scale is a system of chronological measurement that relates geological events and geological time to a numerical scale. It is used to describe the timing and relationships between events that have occurred throughout Earth’s history. The time scale is divided into four main parts: Eons, Eras, Periods, and Epochs. […] Table of Contents Toggle Geological Time Scale
What are Rare Earths? The Japanese call them “the seeds of technology.” The US Department of Energy calls them “technology metals.” They make possible the high tech world we live in today – everything from the miniaturization of electronics, to the enabling of green energy and medical technologies, to supporting a myriad of essential telecommunications and defense systems. […] Table of Contents Toggle What are Rare Earths?Which Elements ...
Geology 101 is the study of the Earth and its materials, structures, processes, and history. It is a broad field that encompasses many different disciplines, including mineralogy, petrology, paleontology, and geophysics. Geologists study the Earth’s physical features, including its rocks, minerals, soils, and water. They also study the Earth’s internal structure and the processes that […] Table of Contents Toggle Why Study Geology?What Do GEOSCIENTISTS ...
What is Volcano I heard about the volcano before 🤔??….We all see volcanoes in movies and news, but did you ask yourself why or how do they happen? On our trip today, we will explore the volcano and see its formation, why it happens, and how.. Are you ready, hero ??Let’s start our journey The […] Table of Contents Toggle What is VolcanoOne ...
An unconformity is a surface of erosion or non-deposition that separates two rock units that have different ages. It represents a time gap in the geologic record, and it occurs when sedimentary rocks are tilted, uplifted, and eroded before new sediment is deposited on top of them. There are three types of unconformities: Disconformities A […] Table of Contents Toggle There are three types of unconformities:
Minerals are homogeneous, naturally occurring, inorganic solids that have a definite crystalline structure and chemical composition. In 1995, the World Minerals Organization put another definition saying that “a mineral is an element or a chemical compound that is naturally crystalline and formed as a result of geological processes.”Minerals have their own specific physical properties which […] Table of Contents Toggle Minerals are classified according to their chemical composition.
Geology online Quizzes questions and answers. Free online quiz with multiple-choice questions (MCQ) without registration. Geology Multiple Choice Questions geology questions and answers | geology questions for competitive exams | geology exam questions. Geology quiz questions and answers.geology quizes. Geology online quiz.
Mohs hardness scale The Mohs hardness scale is a qualitative scale used to measure the scratch resistance of various minerals or materials. It was developed by Friedrich Mohs, a German mineralogist, in 1812. The scale ranges from 1 to 10, with 1 being the softest and 10 being the hardest. Each mineral on the Mohs […] Table of Contents Toggle Mohs hardness scaleMohs Hardness Scale
A geologist is a scientist who studies the Earth's structure, composition, processes, and history. Geologists play a crucial role in understanding and managing Earth's resources, natural hazards, and environmental issues. Their job description can vary depending on their specialization, but here areRead more
A geologist is a scientist who studies the Earth’s structure, composition, processes, and history. Geologists play a crucial role in understanding and managing Earth’s resources, natural hazards, and environmental issues. Their job description can vary depending on their specialization, but here are some common aspects of a geologist’s job:
1. **Fieldwork:** Geologists often spend time in the field, collecting geological samples, mapping rock formations, and studying landforms. This can involve hiking, camping, and working in various outdoor conditions.
2. **Laboratory Work:** Geologists analyze collected samples in laboratories to determine their mineral composition, chemical properties, and age. They use a range of analytical techniques and equipment.
3. **Data Analysis:** Geologists interpret geological data, including maps, rock samples, and remote sensing data, to understand geological processes and history. They may use computer software for data analysis and modeling.
4. **Mapping:** Geologists create geological maps that show the distribution of rock types, faults, and other geological features. These maps are important for land use planning, resource exploration, and hazard assessment.
5. **Resource Exploration:** Some geologists specialize in resource exploration, including oil and gas exploration, mineral exploration, and water resource assessment. They identify potential resource-rich areas and assess their economic viability.
6. **Environmental Assessment:** Environmental geologists evaluate the impact of human activities on the environment. They may work on projects related to environmental remediation, land reclamation, or groundwater contamination.
7. **Natural Hazard Assessment:** Geologists study natural hazards such as earthquakes, volcanoes, landslides, and tsunamis. They assess risks and develop strategies for hazard mitigation and disaster preparedness.
8. **Research and Education:** Many geologists work in academia or research institutions, conducting research to expand our understanding of Earth’s processes. They may also teach geology at universities and colleges.
9. **Consulting:** Geologists often work as consultants for government agencies, environmental firms, mining companies, and engineering firms. They provide expertise on geological issues, land development, and resource management.
10. **Report Writing:** Geologists prepare reports and presentations to communicate their findings and recommendations to colleagues, clients, and the public.
11. **Travel:** Depending on their specialization and projects, geologists may travel extensively, both domestically and internationally, to conduct fieldwork or collaborate with colleagues.
12. **Continuing Education:** Geologists often engage in ongoing professional development to stay updated on the latest research, technologies, and industry practices.
Geology is a diverse field, and geologists can specialize in areas such as hydrogeology, structural geology, paleontology, geochemistry, and more. Their work contributes to our understanding of the Earth’s history, the responsible management of natural resources, and the mitigation of geological hazards.
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