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Isostasy, Basic Concepts of Isostasy & Orogenic Cycle

Geology Quiz - IIT JAM Geology Quiz - IIT JAM Submit Quiz

Interior Of the Earth, Earthquake, Earth’s Magnetism & Gravity Multiple Choice Questions (MCQ)

Seismic Waves Quiz Quiz on Seismic Waves and Earth Layers Time Left: 10:00 Submit Quiz Results

RIVER DEPOSITION AND LANDFORMS

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River Deposition and Landforms Quiz | Geology Quiz River Deposition and Landforms Welcome! This page explores river deposition —the process by which rivers deposit sediments—and the fascinating fluvial landforms that result. Whether you’re a student, educator, or enthusiast, you’ll find valuable information and an interactive quiz to test your knowledge. What is River Deposition? River deposition occurs when a river loses energy and drops the sediment it has been carrying. This usually happens when the river slows down, such as on the inside bends of meanders, at the base of mountains, or at the river’s mouth. Over time, these deposits form distinctive landforms. Major Landforms Created by River Deposition Deltas: Formed at the mouth of a river wh...

Field Geology

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Introducing Structural Geology

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Introducing Structural Geology      In fact, structural geology is a very interesting branch of the earth sciences that deals with physical forces playing out in the building of the crust of our planet. Structural geology makes evident the dynamic forces that have acted on the Earth itself throughout millions of years-from the complex folds in ancient rocks to those proud peaks. Journey through Time: Historical Background Sketch by Leonardo da Vinci showing details of folded strata in the mountains of Italy (ca. 1500 AD)      Discovery concerning structural geology is so much improved over years. From his observations of rock layers, Nicholas Steno noted as early as the 17th century that they were not always horizontal, conferring the revelation that these rocks had deformed. This was revolutionary and laid the foundation for the future work in geological exploration.      In the 19th century, G.P. Scrope suggested that mountains had been pro...

JAM Achiever series - Hydrogeology Part – 4

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  Hydrogeology Part – 4 SPRINGS A spring is a concentrated discharge of groundwater appearing at the ground surface as a current of flowing water. Springs occur in many forms and have been classified as to cause, rock structure, discharge, temperature, and variability.  Bryan divided all springs into       those resulting from nongravitational forces and      those resulting from gravitational forces.  Under the former category are included volcanic springs, associated with volcanic rocks, and fissure springs, resulting from fractures extending to great depths in the earth's crust. Such springs are usually thermal (fig above).  Gravity springs result from water flowing under hydrostatic pressure. the following general types are recognized: 1. Depression Springs-Formed where the ground surface intersects the water table. 2. Contact Springs-Created by a permeable water-bearing formation overlying a less permeable formation that inte...

JAM Achiever series - Hydrogeology Part – 3

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Hydrogeology Part – 2   Darcy’s law and hydraulic conductivity           Water contained within the interconnected voids of soils and rocks is capable of moving, and the ability of a rock to store and transmit water constitutes its hydraulic properties.      The laws that govern the behaviour of groundwater flow in saturated material is that formulated empirically by the French municipal engineer for Dijon, Henry Darcy, in 1856.      Darcy studied the flow of water through porous material contained in a column and found that the      T otal flow - Q, is proportional - difference in water level, h1 − h2, the cross-sectional area of flow, A, and inversely proportional to the column length, L. proportionality constant - K      where dh/dl represents the hydraulic gradient, with the negative sign indicating flow in the direction of decreasing hydraulic head. Limitations:      D...