What is the rate of continental drift?
GeologyThe two continents are moving away from each other at the rate of about 2.5 centimeters (1 inch) per year. What is the speed of continental plates? They move at a rate of one to two inches (three to five centimeters) per year. Is continental drift speeding up? The researchers found the frequency with which
What is petrification Permineralization?
Geologypermineralization: form of fossilization in which minerals are deposited in the pores of bone and similar hard animal parts. petrification: process by which organic material is converted into stone through the replacement of the original material and the filling of the original pore spaces with minerals. What is the difference between permineralization and petrification? One
Which physical layers correspond to which compositional layers?
GeologyThe physical layers exactly match the compositional layers. The crust is the only compositional layer not included in the physical layers. The physical layers of the inner core and outer core form a single compositional layer. The physical layer of the asthenosphere includes the compositional layer of the crust. What are the 3 main compositional
What is the definition of divergent boundaries?
GeologyWhat is the meaning divergent boundary? Divergent boundaries — where new crust is generated as the plates pull away from each other. Convergent boundaries — where crust is destroyed as one plate dives under another. Transform boundaries — where crust is neither produced nor destroyed as the plates slide horizontally past each other. What’s a
What is meant by rock forming minerals?
Geologyrock-forming mineral, any mineral that forms igneous, sedimentary, or metamorphic rocks and that typically, or solely, forms as an intimate part of rock-making processes. How do you identify rock forming minerals? Properties that help geologists identify a mineral in a rock are: color, hardness, luster, crystal forms, density, and cleavage. Crystal form, cleavage, and hardness
When was the Paleocene epoch?
Geologybetween 66 million and 56 million years agoPaleocene Epoch, also spelled Palaeocene Epoch, first major worldwide division of rocks and time of the PaleogenePaleogenePaleogene is Greek meaning “ancient-born” and includes the Paleocene (Palaeocene) Epoch (66 million to 56 million years ago), the Eocene Epoch (56 million to 33.9 million years ago), and the Oligocene Epoch
What is meant by principle of superposition?
GeologyThe superposition principle states that when two or more waves overlap in space, the resultant disturbance is equal to the algebraic sum of the individual disturbances. What’s the meaning of principle of superposition? law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is
What is a composite term?
GeologyA composite is something made up of complicated and related parts. A composite photograph of your family might have your eyes, your sister’s nose, your dad’s mouth, and your mother’s chin. Composite comes from the Latin for “putting together.” It can be used as a noun or adjective. What does composite being mean? adj. 1
Was there an earthquake in Corona California just now?
GeologyWas there an earthquake just now in Corona CA? Over the past 24 hours, Corona had 2 small quakes between magnitudes 1.0 and 1.5 in or near Corona.Recent quakes above magnitude 1.0 in or near Corona, California, USA (updated just now) Past 24 hours: 1 quake Past 7 days: 33 quakes | 1 quake M2+
What are some questions about earthquakes?
GeologyFrequently Asked Questions about Earthquakes (FAQ) What is an “earthquake”? What causes earthquakes? How do earthquakes cause damage? Does the earth open up during an earthquake? Where do earthquakes occur? What is the relationship between volcanoes and earthquakes? Will more shocks be felt after a strong earthquake? What is earthquake Short answer? An earthquake is