on April 16, 2022
Where are deep ocean trenches found?
GeologyTrenches are found on the floor of the sea; however, their common name is deep ocean trenches because they are more often found in the deepest areas of the ocean. Trenches are formed in subduction zones where tectonic plates collide. There are many known trenches that scientists continue to study. Where are deep ocean trenches
on April 16, 2022
What evidence exists for active volcanoes on Venus?
GeologyEvidence of a warm interior and geologic activity dots the surface of the planet in the form of ring-like structures known as coronae, which form when plumes of hot material deep inside the planet rise through the mantle layer and crust. This is similar to the way mantle plumes formed the volcanic Hawaiian Islands. Is
on April 16, 2022
Why do rocks break down?
GeologyThe water in the cracks freezes as the temperature drops below freezing. As the water freezes, it expands. This expansion exerts tremendous pressure on the surrounding rock and acts like a wedge, making cracks wider. After repeated freezing and thawing of water, the rock breaks apart. What causes rocks to break down? Water, ice, acids,
on April 16, 2022
What does a fold and thrust belt tell us about what occurred during an orogeny?
GeologyWhat does a fold and thrust belt bell tell us about what occurred during an Orogeny? Answer 1: Mainly a fold and thrust belt bell tell us that there was net compression across the plate discontinuity, and that the rocks making up the top plate were of the properties to allow this type of deformation
on April 16, 2022
What is Biostratigraphic unit?
GeologyWhat is biostratigraphic unit in geology? Biostratigraphic units (biozones) are bodies of rock strata that are defined or characterized on the basis of their contained fossils. Biostratigraphic units exist only where the particular diagnostic biostratigraphic feature or attribute on which they are based has been identified. What is biostratigraphic zone? In biostratigraphy, biostratigraphic units or
on April 16, 2022
When did Belemnites appear?
GeologyThere is evidence that belemnites first appeared in the Lower Carboniferous period (about 350 million years ago), but they became common in the Jurassic and Cretaceous periods (from 213 to 65 million years ago). They died out early in the Eocene Epoch (by about 54 million years ago). When did belemnites exist? Belemnites lived during
on April 16, 2022
Which fault in southern California is considered the most dangerous today?
GeologyThe study established how a major earthquake could begin on the San Jacinto fault and continue on the San Andreas, which is California’s longest and one of its most dangerous faults. What is the most dangerous fault in southern California? The San Andreas fault The San Andreas fault is the primary feature of the system
on April 16, 2022
How does superposition support evolution?
GeologyThe Law of Superposition states that older rocks are located toward the bottom, under the younger rocks. … This law proves that evolution could have occurred since fossils found deep in rock structures are older, from a different time, where some generations of species did not exist. What is superposition in evolution? law of superposition,
on April 16, 2022
What depth does magma form?
Geology“What we are now saying is that with just a trace of carbon dioxide in the mantle, melting can begin as deep as around 200 kilometers. “When we incorporate the effect of trace water, the magma generation depth becomes at least 250 kilometers.” How deep in the earth does lava come from? Lava is molten
on April 16, 2022
What time of year are tsunamis most common?
GeologyThere is no season for tsunamis. A tsunami can happen any time, any season, and during any weather. Where do tsunamis occur most often? the Pacific Ocean Tsunamis occur most often in the Pacific Ocean and Indonesia because the Pacific Rim bordering the Ocean has a large number of active submarine earthquake zones. Do tsunamis