306 Answered Questions for the topic geology

Geology Earth Science

04/26/19

The North Texas red beds are the world's best locality for what Early Permian land vertebrates?
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04/26/19

Recreating the rock cycle?
I want to recreate the rock cycle using some item that can behave as a rock. The purpose of this is to get a point across to my students about how really there is a reason why the rock cycle is... more
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Geology

04/22/19

Which of the following locations is not likely to have mass wasting events?
a. places with a lot of active construction workb. places with very warm, dry climatesc.places where earthquakes are commond.places where it rains heavilye.places with slopes of unconsolidated... more
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04/20/19

What evidence did Alfred Wegener have for the Plate Techonic theory?
What was his evidence that made him believe that Mid-ocean mountain ranges mapped with sonar?
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04/20/19

Why are minerals found in "large" quantities and not scattered throughout the earth as individual atoms?
Heavier elements are created in stars. After stars die they scatter these heavier elements throughout the universe. These elements eventually gather to form planets. But why do we find "chunks" of... more
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04/20/19

How do geologists find ore deposits?
From my research, there is lots of information on how to extract ore, but I can't find any information on how these ore deposits are found in the first place, apart from 'looking for surface... more
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04/20/19

Can rocks have pressure signatures?
Since rocks can have magnetic signatures, as is the case with paleomagnetism, can they store past pressures also? For example, when researchers are trying to determine past ocean levels, they... more
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04/20/19

Width of strata in stratigraphic column?
I am trying to understand whether there is one "standard" meaning of the width of represented strata in stratigraphic columns, but I can find nothing online or in my geology books. I notice that,... more
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04/18/19

Do we have knowledge of the geology of the moon?
With reference to the Ebb and Flow lunar satellites, was there any data about its geology? Is there a central core, or is it homogenous?
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04/18/19

How to interpret the use of late and early Tertiary from older literature?
When reading older papers how should I interpret the use of "Late Tertiary" and "Early Tertiary"? Would these periods equate to Paleogene and Neogene, or was there a different accepted boundary age... more
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04/12/19

What is the earth made up of?
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04/12/19

Which ocean is the deepest?
The ocean seabed covers 360 million square kilometers. Sometimes the most fascinating thing is to think how many undiscovered things there could be down there...
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04/12/19

How have global sedimentation rates changed over the last billion years?
Do we have a graph of how sedimentation rates changed over time?
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Geology

04/12/19

If I was to tunnel straight through a mountain, what kind of rock would I find?
I'm developing a semi-realistic game involving stereotypical dwarves digging into mountainsides and carving out grand caverns for themselves, similar to those in Moria or the Lonely Mountain from... more
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04/12/19

What are the high field strength and large ion lithophile (HFS or HFSE & LIL or LILE) elements?
There are two groups of elements that are frequently mentioned when discussing incompatible trace elements. They are the high field strength elements (HFS or HFSE) and the large ion lithophile... more
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04/11/19

What kind of data is best shown in a rose diagram?
I am looking for some geological data where presenting it in a rose diagram is desirable. I don't really know what kind of data is suitable. Any suggestion of data —preferably from the field of... more
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04/11/19

A sedimentary rock with only minerals?
In my text book I came across this multiple-choice question>A sedimentary rock consists of only minerals and lacks fossils, it could be classified as:>i) a clastic sedimentary rock>ii) a... more
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04/11/19

What do the derivative or the integral of amplitude of a seismogram mean?
I'm doing a project in which I'm analyzing earthquake seismogram waves. I used a program to graph the exact amplitudes and how they changed over the course of a single earthquake. For the project I... more
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04/11/19

Where can obsidian be found?
Where is obsidian found? Is it typically found on the surface or underground? If underground, how far under (meters or feet would be perfect)? Also, is it found everywhere on Earth, or just in... more
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Geology Measurements

04/10/19

Is there a difference between Density and Specific Gravity?
My textbook says that the specific gravity is "the ratio of the mass of a mineral compared with the mass of an equal volume of water."Is this any different to density? If so, how? If not, why does... more
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Geology Petrology

04/09/19

What are the differences between geology, petrology, and lithology?
What differences are there between geology, petrology, and lithology?If I were to get into any of those fields, what exactly would I be studying?Also, are petrology and lithology just branches of... more
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04/04/19

Where can obsidian be found?
Where is obsidian found?Is it typically found on the surface or underground? If underground, how far under (meters or feet would be perfect)?Also, is it found everywhere on Earth, or just in areas... more
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04/04/19

How significant is a planet's density to the formation of life?
I'm doing some writing set on a fictional earthlike planet that for reasons needs to be substantially larger than Earth but can't have substantially higher gravity. I've been able to compromise... more
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04/04/19

Why do crystals, like quartz and diamonds, form in different colors?
Some crystals, like quartz and diamonds, form in a variety of different colors. For example, quartz can be clear, 'foggy', pink, yellow, and even blue. - What happens during the crystal's... more
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Geology Volcanology

04/02/19

Are coral cays and coral atolls just volcanic islands?
Are coral cays and coral atolls just a different type of volcanic island? When I hear: "volcanic island" I think at places like Moorea or Hawaii, but ultimately, coral cays and coral atolls lay... more
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