What 2 areas are geology divided into?
GeologyGeology is a very broad field that can be divided into many more specific branches. Traditionally, geology has been divided into two main subdivisions: physical geology and historical geology. Physical geology is the study of the solid Earth and the processes that change the physical landscape of the planet. What are 2 broad areas of
What parts of the earth make up the biosphere?
GeologyThe Biosphere It is the part of Earth, including the air, land, surface rocks, and water, where life is found. Parts of the lithosphere, hydrosphere, and atmosphere make up the biosphere. Which part of Earth is biosphere? The biosphere is made up of the parts of Earth where life exists—all ecosystems. The biosphere extends from
What causes U shaped valleys?
GeologyDefinition: U-shaped valleys form through glacial erosion. Glaciation develops in established v-shaped river valleys where the ice erodes the surrounding rocks to create a “U” shaped valley with a flat bottom and steep sides. Glacier movement is driven by gravity. What causes wide U-shaped valleys? It forms in a hollow where a glacier has more
How many continents are there really?
GeologyBy most standards, there is a maximum of seven continents – Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South America. Many geographers and scientists now refer to six continents, in which Europe and Asia are combined (because they’re one solid landmass). Are there actually 8 continents? Scientists confirmed the existence of an eighth continent,
What was the cause of the Kashmir earthquake in 2005?
GeologyThe 2005 Kashmir earthquake was the result of millions of years of tectonic activity. Around 225 million years ago, India was a continent, but about 50 million years ago, it collided into Asia. This collision is responsible for the Himalaya, the tallest mountain range in the world. What type of fault caused the Kashmir earthquake?
What minerals can be found in Obsidian?
GeologyAbundant, microscopic crystals of minerals like magnetite, hornblende, pyroxene, plagioclase and biotite, combined with tiny fragments of rock, likely produce the jet-black varieties of obsidian. Can you find crystals in obsidian? What are the characteristics of obsidian? Obsidian breaks with a typical “conchoidal” fracture, like all glass and some other forms of natural rocks. Due
What is the relationship between total pore space and texture?
GeologyAs the texture becomes finer, or as silt plus clay increases, total pore space increases together with the range and diversity of pore sizes and shapes. This in turn influences pore size distribution. What is the relationship between pore space and porosity? Porosity is the pore space in soil between mineral particles (and solid organic
What is Xenocryst geology?
GeologyA xenocryst is an individual foreign crystal included within an igneous body. Examples of xenocrysts are quartz crystals in a silica-deficient lava and diamonds within kimberlite diatremes. What’s the difference between xenolith and Xenocryst? Xenocrysts are a type of xenolith—one type of rock trapped in another type of rock. Here, the crystal pyroxene is trapped
What are the layers that make up Earth quizlet?
GeologyTerms in this set (7) Crust. the thin, rocky, outer layer of the Earth that forms the Earths outer skin. Mantle. The layer of hot, solid, material between the Earth’s core and crust and takes up most of the earth’s volume. Core. the iron and nickel center of the Earth. lithosphere. … Asthenosphere. … Outer
Was there a earthquake in Maryland today?
GeologyThere were no significant confirmed earthquakes in or near Maryland in the past 24 hours. What time was the earthquake in Baltimore today? The Maryland Emergency Management Agency tweeted shortly before 5 p.m.: “A small earthquake measuring 2.6 on the Richter scale hit near Woodlawn in Baltimore County about 3:45 this afternoon. What year was