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1500 questions
13
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4 answers
Would it be geographically feasible to store water on land to counteract sea level rise?
Based on a misunderstanding of another post, I prepared an estimate of how much water would be required to lower sea level by one meter. the main question would be: could this be stored on land?
Peter Jansson
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13
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Will dust storms be more frequent in the future?
I noticed that in some science fiction movies set in the future on Earth, like Wall-E and Interstellar, dust storms are very prominent.
Are there any scientific hypotheses suggesting that dust storms may become more frequent in the future?
Aryaman Bansal
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13
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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 elements (LIL or LILE).
What are these groups? How are…
Gimelist
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13
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Glaciology: odd pattern of smooth and ribbed chunks of ice in Antartica
At -69.184611, -68.124276 (just east of the Bugge Islands) there is a triangular ice shelf. On satellite images (as seen on Google/Bing maps) you can see it is riddled with --for lack of a clearer description-- chunks of ice that are either ribbed…
wers
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13
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How much of the underwater land masses within the arctic ocean is considered continental shelf?
Right now I'm in the middle of writing my master thesis which is about modelling the ocean bottom pressure (obp) under areas with sea-ice coverage.
In most Oceanic General Circulation Model's (ogcm) obp is calculated prognostically, so it's…
Julian Zimmermann
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13
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3 answers
Has an entire plate ever subducted?
We know that plates can subduct, causing one plate to be pushed into the core by another. As the plates move, the subduction continues, pushing one plate under the other.
If this process continues, logic says, the entire plate could be subducted…
Richard
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13
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Have meteorites been found in the oldest sedimentary rocks?
Dropstones sometimes occur in sedimentary rocks. These are foreign rocks and boulders that happened to "drop" into a sediment and were fossilised when the sediment was lithified.
(source: Michael C. Rygel via Wikimedia Commons)
But what about…
Gimelist
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13
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Are there any metal anomalies other than iridium in the K-Pg boundary?
The iridium anomaly marks the elevated concentration of iridium in sedimentary deposits of the Cretaceous-Paleogene boundary. The iridium is said to come from the impactor, which is supposed to have much higher iridium contents than Earth's…
Gimelist
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13
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1 answer
How to measure stretching direction on chocolate-tablet boudins?
This has always bothered me during field mapping: A boudin with two stretching directions has the form of an M&M candy (or almond shape). What do I do to measure the two stretching directions if the surrounding rocks don't show any stretching…
tobias47n9e
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13
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3 answers
Optimized interpolation method with fixed-location sample data points?
I'm trying to find an optimized spatial interpolation method that deals with fixed-location sample data points. Say if I have fixed-location sampling sites and collect data daily, and then use these data to create interpolation surfaces. Is there a…
l.z.lz
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13
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2 answers
How accurately can explosions be triangulated from the IRIS seismogram data?
There's a bunch of armed conflicts going on right now. What are the lower boundaries on accuracy of triangulating and timing man-made events from the IRIS datasets (accessible, for instance, with the ObsPy package)?
Deer Hunter
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13
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1 answer
Why is basalt denser than granite?
If lava is nothing but magma breaking through the earth's surface, then why is basalt more dense than granite?
I understand that something happens during the cooling process, but cannot find any comprehensive answer.
Koushik Sarkar
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13
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Why would volcano eruption cause cardiac arrest?
Following recent eruption of Mt Ontake and the sad news of over 30 people found in 'cardiac arrest', why would the eruption cause it?
My initial thought would be that the cause of death would normally be suffocation or burns from the hot ash. Is it…
Jerry
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13
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What is it about ancient craton geology that results in associated kimberlite pipes containing economic diamond deposits?
According to the Australian Geological Survey Organisation paper Kimberlite and lamproite diamond pipes (Jaques, 1998), economic deposits of volcanically-formed diamonds are
restricted to ancient cratons (typically >2.Ga) or cratonised provinces…
user889
13
votes
1 answer
How do you calculate the depth of penetration in a Schlumberger array?
In a resistivity survey, how do we calculate the depth of penetration for a Schlumberger array?
shrey
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