Category: Geology

How metamorphic rocks are made?

Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors. Conditions like these are found deep within the Earth or where tectonic plates meet. How are metamorphic rocks formed easy answer? Metamorphic rocks are formed from other rocks that are changed because

Why are earthquakes felt more on the East Coast?

There is a geological explanation. The Earth’s crust beneath the Eastern U.S. is “older and colder” than out West. The fault lines are more healed. As a result, the East is far less seismically active — but when earthquakes do hit, that hard ground is far more effective and conducting the seismic waves. Are earthquakes

When did the Kashmir Earthquake end?

The 2005 Kashmir earthquake occurred at 08:50:39 Pakistan Standard Time on 8 October in Pakistani-administered Azad Kashmir.…2005 Kashmir earthquake. Kabul Islamabad Lahore Local time 08:50 PKT Magnitude 7.6 Mw Depth 15 km (9.3 mi) Epicenter 34.45°N 73.65°ECoordinates:34.45°N 73.65°E What was the duration of the Kashmir earthquake? The epicenter of this earthquake was located around Muzaffarabad,

How old is the Earth’s outer core?

The 1 billion to 1.3 billion year result suggests that Earth’s core is “actually relatively young,” Lin said. This estimate isn’t as young as some estimates, such as one published in 2016 in the journal Nature (opens in new tab) that used similar methods but found the core was a mere 700 million years old.

What is lofting plume?

Lofting is type of plume behaviour, which occurs when conditions are unstable above an inversion layer, the release of a plume is above the inversion layer. Actually lofting is considered to be one of the favourable situations for air pollutant dispersion. What is a Fumigating plume? 6) Fumigating Plume: When inversion occurs above the top

When was the last time Seattle had an earthquake?

The 2001 Nisqually earthquake occurred at 10:54:32 local time on February 28, 2001 and lasted nearly a minute.…2001 Nisqually earthquake. A stretch of Washington State Route 302 near Allyn, Washington, damaged after the earthquake Olympia Seattle Local time 10:54:32 a.m. Magnitude 6.8 Mw Depth 57 km (35 mi) When was the last major earthquake in

What does amplitude mean in earthquakes?

The amplitude is the size of the wiggles on an earthquake recording. How does amplitude affect earthquakes? The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included in the magnitude formula to compensate for the variation in the distance between the various seismographs and

What is stoping in mining?

stoping, in mining engineering, the opening of large underground rooms, or stopes, by the excavation of ore. Stoping is practiced in underground mineral mining when the surrounding rock is strong enough to permit the drilling, blasting, and removal of ore without caving. What is shrinkage stoping in mining? GENERAL DESCRIPTION Shrinkage or shrinkage stoping refers

What can be found in clastic rocks?

Mineral composition of clastic reservoirs, in order of abundance are: quartz, clay minerals, rock fragments, feldspars, chert, mica, and carbonate fragment. A “clean” sandstone will comprise mainly quartz grains. What features can be found in clastic rocks? Clastic sedimentary rocks are named according to the characteristics of clasts (rock and mineral fragments) that comprise them.

What causes stalactites and stalagmites to form?

Stalactites and stalagmites form when rainwater drips through limestone rock. Along the way, it picks up carbon dioxide, from the air and from any organic matter it passes as it dribbles down, according to the National Park Service. The carbon dioxide reacts with the water to make a weak acid called carbonic acid. How are

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