What is Coral Reefs and types of Coral Reefs?
Coral reef generally refers to a marine ecosystem in which the main organisms are corals that house algal symbionts within their tissues.
Unconformity and different types in Geology
Unconformity represents a period of erosion and deposition. Throughout Earth history, the deposition of sediment has been interrupted again and again. All such breaks in the rock record are called unconformities.
What are Fat Clays?
Definition of fat clays It is fine grained soil. Fat clays are cohesive and compressible in nature with high plasticity and liquid limit of 50 or greater. It is symbolized as CH. Such type of clays contains high proportion of minerals that make it greasy to the feel. What are problems associated with Fat Clays? … Read more
Ore Reserve Estimation Methods – Detailed Tutorial
Ore Reserves are part of mineral resource that are economically feasible for extraction using current technology. For ore reserve the grade and tonnage should be established with reasonable assurance by drilling & other means.
Why Proterozoic Basins have so much Uranium worldwide?
The Proterozoic basins around the world shows higher uranium concentration and many deposits are also established in these basins. For example, Proterozoic Athabasca Basin and Thelon Basin; Canada, Paleo- to Mesoproterozoic McArthur Basin; Australia, Paleoproterozoic Roraima Basin; Guyana, Paleo- to Mesoproterozoic Cuddapah Basin and Neoproterozoic Bhima Basin; India etc. The physicochemical conditions are extensively studied … Read more
Coquina – Sedimentary Rock Definition and Composition
Coquina Definition Coquina is a detrital carbonate sedimentary rock composed wholly or chiefly of mechanically sorted fossil debris that experienced abrasion and transport before reaching the depositional site. Wentworth (1935) recommended a particle size greater than 2 mm. What type of rock is coquina? Coquina is a type of sedimentary rock that is primarily composed … Read more
Wilson Cycle: The Cyclical Opening and Closing of Ocean Basins
The cycle of opening and closing ocean basins is known as the Wilson Cycle. The term Wilson Cycle named after J. Tuzo Wilson who first described it in 1966. A Wilson Cycle begins with rifting and seafloor spreading followed by the opening of an ocean basin with passive continental margins on both sides, then closing … Read more
Porosity and Permeability: Definition and Types
Porosity is the percentage of the bulk volume of a rock or soil that is occupied by interstices, whether isolated or connected. Effective porosity is the percent of the total volume of a given mass of soil or rock that consists of interconnected interstices. Types of Porosity Primary porosity is the porosity that developed during … Read more
Lake – Definition and types of lake
What is lake? Any inland body of standing water occupying a depression in the Earth’s surface, generally of appreciable size (larger than a pond) . The water may be fresh or saline. The term includes an expanded part of a river, a reservoir behind a dam, or a lake basin intermittently or formerly covered by … Read more
Rock weathering – Definition, Type and Products of Weathering
Weathering is the breakdown and alteration of rocks at Earth’s surface through physical and chemical reactions with the atmosphere and the hydrosphere.