SP Geology

Isostasy is one of the most important concepts in Physical Geology and Geophysics for competitive exams like IIT JAM, GATE, CSIR NET, GSI and CUET. In this video, we will clearly understand: 🔹 What is Isostasy? 🔹 Concept of Crustal Equilibrium 🔹 Airy Model of Isostasy 🔹 Pratt Model of Isostasy 🔹 Difference between Airy and Pratt Theory 🔹 Role of density and crustal thickness 🔹 Isostatic adjustment and rebound The concept explains how the Earth’s lithosphere floats in gravitational balance over the mantle, similar to an iceberg floating in water. This topic is very important for geomorphology, geodynamics and structural geology. If you are preparing for IIT JAM Geology, GATE Geology or CSIR NET Earth Science, this lecture will help you build strong conceptual clarity. 📚 Exams Covered: IIT JAM Geology GATE Geology & Geophysics CSIR NET Earth Science GSI CUET PG Geology 📢 Stay Connected with SP Geology 🌐 Website: www.spgeology.org 📺 YouTube: SP Geology 👉 Don’t forget to Like, Share and Subscribe for more geology lectures and PYQ discussions.

What if Earth once had lava far hotter than anything we see today? 🔥 Komatiite is one of the hottest volcanic rocks ever formed, created over 2.5 billion years ago during the Archean Eon. With extremely high magnesium content and its stunning spinifex texture of needle-like olivine crystals, this rare rock reveals just how intense early Earth really was. These ancient rocks are geological time capsules — proof that our planet’s mantle was once much hotter than it is today. 🌍 Discover the fiery beginnings of Earth. #Komatiite #Geology #Volcano #EarthScience #Archean #AncientEarth #ScienceShorts #YouTubeShorts

Welcome to Optical Mineralogy Part – 1 by SP Geology 🌍 In this lecture, we cover the fundamental concepts of Optical Mineralogy that are very important for BSc, MSc Geology, IIT-JAM, GATE, and CSIR-NET Earth Science examinations. 📚 Topics Covered: ✔ Electromagnetic Radiation (EMR) – nature & properties ✔ Interaction of light with minerals ✔ Isotropic Minerals – definition & properties ✔ Anisotropic Minerals – definition & properties ✔ Double Refraction (Birefringence) explained clearly ✔ Why some minerals show two refractive indices ✔ Basic foundation for thin section study This lecture builds the conceptual base required to understand the polarizing microscope and advanced optical properties in upcoming parts. If you are preparing for IIT-JAM Geology, GATE Geology, MSc Entrance, or University Exams, this video is very important for your preparation. 👉 Watch till the end for complete clarity 👉 Like, Share & Subscribe to SP Geology for more Geology lectures

The IIT JAM 2026 Geology Exam, conducted by Indian Institute of Technology (IIT system), was successfully held on 15th February 2026. In this video, we discuss the MSQ (Multiple Select Questions) solutions with detailed conceptual explanations. This session includes: IIT JAM 2026 MSQ questions Correct answer discussion Concept clarity & common mistakes Difficulty level analysis Expected trends for future exams If you appeared for IIT JAM 2026, this video will help you analyze your performance. If you are preparing for IIT JAM 2027, this discussion will give you insight into the latest question pattern and important topics. MSQ is one of the most scoring yet tricky sections in IIT JAM. Understanding the logic behind each option is crucial to avoid mistakes. 🎯 Useful for: IIT JAM 2027 Aspirants GATE Geology CSIR NET Earth Sciences GSI & other geology competitive exams 🔔 Subscribe to SP Geology for complete exam analysis, answer discussions, and concept-based preparation. #IITJAM2026 #IITJAMGeology #JAMExamAnalysis #GeologyMSQ #SPGeology

This Crystallography lecture series is designed to build a strong conceptual and problem-solving foundation for IIT JAM, GATE, and other Geology entrance examinations. The lectures are explained in a simple, step-by-step, exam-oriented manner, helping students understand concepts clearly and apply them confidently in theory and numerical questions. This series is ideal for B.Sc. and M.Sc. Geology students, as well as competitive exam aspirants. Each part of the series connects logically with the next, so it is recommended to watch the lectures in sequence for maximum benefit. 📌 Suitable for: IIT JAM Geology GATE Geology NET & State PSC exams University semester exams 📖 Watch the complete playlist to master Crystallography for Geology.

Download the complete answer sheet here https://www.spgeology.org/ In this video, we solve the Numerical Answer Type (NAT) questions from IIT JAM 2026 Geology with detailed step-by-step explanations. The NAT section is very important for scoring high marks in IIT JAM Geology, as it tests conceptual clarity and numerical problem-solving skills

In this short video, we explain the Gibbs Phase Rule in simple terms for Geology students preparing for IIT JAM, GATE, NET, GSI, and CUET. 📌 Formula: F = C – P + 2 Where: F = Degree of Freedom C = Number of Components P = Number of Phases This concept is very important in Petrology, Thermodynamics, and Mineral Stability. Subscribe to SP Geology for more quick revision shorts and exam-focused geology content. #Geology #GibbsPhaseRule #IITJAM #GATE2026 #NETGeology #GeologyShorts

Weathering is a fundamental process in geomorphology that involves the breakdown of rocks at or near the Earth’s surface. This two-part lecture series explains the types, processes, and significance of weathering in a simple, exam-oriented manner. 🔍 Topics Covered in This Series: • Introduction to weathering • Types of weathering • Mechanical / Physical weathering • Chemical weathering processes • Biological weathering • Factors controlling weathering • Role of weathering in landform development and soil formation 🎯 Useful for: IIT-JAM Geology | GATE Geology | UGC-NET | State PSC | BSc & MSc Geology students 📚 This lecture is part of Geomorphology / Physical Geology and is ideal for concept clarity, revision, and competitive exam preparation. 🔔 Subscribe for more geomorphology, physical geology, and exam-focused revision lectures.

This Crystallography lecture series is designed to build a strong conceptual and problem-solving foundation for IIT JAM, GATE, and other Geology entrance examinations. The lectures are explained in a simple, step-by-step, exam-oriented manner, helping students understand concepts clearly and apply them confidently in theory and numerical questions. This series is ideal for B.Sc. and M.Sc. Geology students, as well as competitive exam aspirants. Each part of the series connects logically with the next, so it is recommended to watch the lectures in sequence for maximum benefit. 📌 Suitable for: IIT JAM Geology GATE Geology NET & State PSC exams University semester exams 📖 Watch the complete playlist to master Crystallography for Geology.