Facies Classification of Metamorphic Rocks Metamorphic facies classification is an essential tool in understanding the pressure-temperature (P-T) conditions under which rocks undergo metamorphism. It helps geologists interpret the geological processes and tectonic settings responsible for metamorphic transformations. In this article, we explore the classification system in detail, focusing on its ...
Geology
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What is Bowen’s Reaction Series
Introduction to Bowen’s Reaction Series Bowen’s Reaction Series is a fundamental concept in igneous petrology that explains the sequence of mineral crystallization in a cooling magma. This concept, developed by Norman L. Bowen in the early 20th century, has become a cornerstone in understanding how igneous rocks form and the ...
Mohs Hardness scale
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. ...
What is difference between Minerals, Metals and Ores
Understanding Minerals, Metals, and Ores: Types, Formation, and Detailed Overview Minerals, metals, and ores are essential to understanding the Earth’s composition and its resources. These terms are interconnected but have distinct definitions and characteristics. Let’s delve into their types, formation processes, and detailed properties, offering an in-depth perspective for students ...
Sulfer
Sulfur: A Comprehensive Guide for Geology Students Introduction to Sulfur Sulfur (S), one of the most abundant elements in the Earth’s crust, plays a crucial role in geology, both in mineral formation and environmental processes. It is a non-metal element found in a variety of forms, ranging from pure sulfur ...
Silver
Silver: A Comprehensive Guide for Geology Students Silver (Ag) is one of the most well-known and valuable metals in both historical and industrial contexts. It has significant geological, economic, and industrial importance due to its unique properties and occurrence in various mineral forms and deposit types. This in-deipth guide will ...
Malachite: The Green Gemstone of Copper
Introduction to Malachite Malachite is a vibrant green mineral that has fascinated geologists, gem enthusiasts, and mineralogists for centuries. Known for its striking green color and unique banded patterns, malachite is not only valued as a gemstone but also as an important ore of copper. In this article, we will ...
Oceanic Crust and Continental Crust: The difference
The Earth’s crust is divided into two major types: oceanic crust and continental crust. These two types of crust differ significantly in composition, structure, thickness, and other physical and chemical properties. Understanding the differences between oceanic and continental crust is fundamental to geology, as it helps explain various geological processes, ...
What types of rocks found Gold
Gold is typically found in the following types of rocks: 1. Quartz Veins Gold is found in quartz veins through a combination of geological processes involving hydrothermal fluids, which transport and deposit gold and other minerals. Here’s a detailed explanation of how gold ends up in quartz veins: 1. Formation ...
GEOLOGY QUIZ WITH ANSWERS
The provided document contains a series of questions and answers related to geology, petrology, mineralogy, and soil science. It covers topics such as types of rocks, geological processes, elements in the Earth’s crust, and notable geological landmarks. Other subjects include historical figures in geology, notable geological events, and specific gemstones ...
Latest Geology Articles
GEOLOGY HUB Latest Articles
What is Cinnabar
✳️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 ...
Kimberlite
🔷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 ...
Geological Time Scale
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: ...
What are Rare Earth Elements and why are they important?
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 ...
Geology 101
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 ...
Volcano
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 ...
What is an Unconformity in Geology
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 ...
Mineral
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 ...
Geology Online Quizzes Questions and Answers
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.
Metamorphism
The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions which have generally been imposed at depth below the surface zones of weathering and cementation, and which differ from the conditions under which the rocks in question originated. Metamorphism means to “change form,”. In other words, ...