on April 2, 2022
Is volcanic breccia felsic or mafic?
GeologyBecause 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
on April 2, 2022
What landforms do strike slip faults created?
GeologyStrike-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
on April 2, 2022
Is coal ash really toxic?
GeologyCoal 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
on April 2, 2022
What is P wave S wave and L wave?
GeologyThere 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
on April 2, 2022
Who developed the principle of original horizontality?
Geologypioneer 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
on April 2, 2022
What is meant by nature of science?
GeologyWhen 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
on April 2, 2022
When did the 2005 Pakistan earthquake happen?
GeologyWhere did the 2005 Pakistan earthquake happen? Kashmir earthquake of 2005, disastrous earthquake that occurred on October 8, 2005, in the Pakistan-administered portion of the Kashmir region and in the North-West Frontier Province (NWFP; called Khyber Pakhtunkhwa after 2010) of Pakistan; it also affected adjacent parts of India and Afghanistan. How long was the 2005
on April 2, 2022
What is phyllite made of?
GeologyThe essential mineral ingredients of phyllites are microcrystalline quartz, fine-grained micas (sericite, muscovite), and chlorite. The quartz is usually in the form of elongated thin lenses or veins within the sheets, which contain mainly fine-grained mica and chlorite. What is the phyllite made up of? Phyllite (/ˈfɪlaɪt/ FIL-yte) is a type of foliated metamorphic rock
on April 2, 2022
What is the largest earthquake ever recorded in Canada?
GeologyEarthquake Vancouver Island’s largest earthquake, and the largest onshore earthquake in Canada, occurred on 23 June 1946. … On 22 August 1949, a M8. … In the Nahanni region of the Northwest Territories, a M6. … Though very little damage was reported, a major earthquake occurred off the coast of Haida Gwaii on . Where
on April 2, 2022
Where are tarns found?
GeologyDefinition: Tarns are found in corries which are formed by glacial erosion. After the glaciers have melted, water collects in the bottom of the corries to form lakes or tarns. Both corries and tarns are typically located in higher topographies to match their glacial origins. What are tarns geography? Tarns are lakes that form in