Is volcanic breccia felsic or mafic?
Regional SpecificsBecause tuffs and breccias require lots of ash to form, most tuffs and breccias are intermediate or felsic in composition. What rock type is breccia? Breccia Type Sedimentary Rock Texture Clastic; Coarse-grained (2 – 64 mm) Composition Quartz, Feldspar, Lithics Color Reddish brown Miscellaneous Angular clasts in a fine- to medium-grained matrix; Immature Is volcanic
What landforms do strike slip faults created?
Regional SpecificsStrike-slip faults, which are among the straightest and longest geologic features on Earth, are often identified by their geomorphic expression, including hallmarks such as offset rivers, shutter ridges, sag ponds, and linear, strike-parallel valleys [e.g., Wallace, 1949; Hill and Dibblee, 1953]. What do strike-slip faults create? These faults are caused by horizontal compression, but they
Is coal ash really toxic?
Regional SpecificsCoal ash is incredibly dangerous. Short-term exposure can bring irritation of the nose and throat, dizziness, nausea, vomiting, and shortness of breath. Long-term exposure can lead to liver damage, kidney damage, cardiac arrhythmia, and a variety of cancers. What is coal ash and why is it dangerous? Coal ash contains contaminants like mercury, cadmium and
What is P wave S wave and L wave?
Regional SpecificsThere are two types of seismic waves, primary waves and secondary waves. Primary waves, also known as P waves or pressure waves, are longitudinal compression waves similar to the motion of a slinky (SF Fig. 7.1 A). Secondary waves, or S waves, are slower than P waves. What are L waves in an earthquake? Surface
Who developed the principle of original horizontality?
Regional Specificspioneer Nicholas StenoNicholas Steno (1638–1686). What does the principle of original horizontality? The Principle of Original Horizontality states: Layers of rocks deposited from above, such as sediments and lava flows, are originally laid down horizontally. Who discovered the principle of superposition? The law of superposition was formulated by Danish geologist Nicolaus Steno and outlined in
What is meant by nature of science?
Regional SpecificsWhen we describe the nature of science, we are considering the special characteristics, values, and assumptions that scientific knowledge is based on and how scientific knowledge is developed. What is an example of nature of science? Scientific Knowledge Assumes an Order and Consistency in Natural Systems Identifies patterns in data and can infer future outcomes