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Questions tagged [geology]

For questions about rocks, minerals and the physical structure and substance of the world.

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What Else Could Create Jeffrey Linn's Coastlines BESIDES The Influence of Ice?

Who? Unfortunately, I could not find any background information about Jeffrey Linn, but he is better known for his sea level maps. Specifically, what a particular city would look like if sea levels ...
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8answers
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How to explain one side of Super Earth is smoother than the other side?

A spaceship flew across an unclassified region of the Milky Way galaxy and found a Super Earth in an unnamed system. The planet is almost twice as massive as Earth and is orbiting fairly far away ...
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5answers
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How Can the Coastlines Look Similar In Spite of the Cooler Temperature

The established fact is that the shape of a planet's continental coastlines is determined by the planet's climate. Higher temperatures mean less ice, which ultimately means higher sea levels. (Case ...
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2answers
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What could make a ship made of pumice seaworthy?

I'm designing the type of ships an amphibious race could use for long distance travel, like a floating house, following oceanic currents. I imagine it shaped like an iceberg, with more structure below ...
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14answers
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How can I launch a projectile to hit something in orbit, using only geological structures and power sources?

As an ancient organism whom currently occupies a large chunk of a planet beneath the surface, I have a pesky issue with an invasive species. These humans have decided to colonize my home, mistaking it ...
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3answers
150 views

What kinds of minerals or compounds could radiate heat?

I'm working on an RPG in a world with some magical elements, like a type of energy (so far unnamed) inherent in animals and humans. Those with high amounts of this life energy in them are thought of ...
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3answers
864 views

Real “Alchemical Transmutation” of Some Other Mineral Into Gold? [closed]

While obviously you can't really transmute something like Lead into Gold (as far as I know), is there any real-life mineral or element that could be used to artificially create Gold from whatever its ...
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4answers
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Desert planet with forests at the poles

I'm thinking up a Mars or Venus type planet where the poles (or one pole) has a forest growing out of it due to a device that is used to make the planet more habitable by creating a oxygen friendly ...
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1answer
96 views

How can I turn diamond into graphene?

The goverment of Africa decided that it would no longer tolerate the diamond mafia, so the corporation of DeBeers was hunted down and disbanded, to put it lightly. Now, all the diamond mines have been ...
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2answers
118 views

Human caused disasters creating a whole new continent

So my world needs to be destroyed because of a variety of things. New land masses would be created and destroyed and joined till we had a single continent. In the future, people saw the possibility ...
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2answers
134 views

What would happen to the Earth if it were suddenly transported to a completely empty void? [duplicate]

The entire planet Earth is suddenly teleported (never mind how for now) to a completely empty space. No sun, no moon, no stars or other planets. There's absolutely nothing out there and it appears ...
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4answers
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Underground Atmosphere

I have a terrestrial planet that is similar to Mars in many ways, a desert-like surface, thin atmosphere, and inhospitable to large flora and fauna as we know it. This planet has ceased tectonic ...
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1answer
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Water flow in faults [closed]

Can water flow from a point 1200 meters above sea level, through fissures or faults below sea level for a distance of 8 km and follow the fault upwards to a point 300 meters above sea level?
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1answer
194 views

How to make a bigger planet be as similar to Earth as possible

My fantasy world is slightly larger than earth so that discovery of the continents becomes harder (about 20% surface should do it). But at the same time I want to preserve most aspects to make it like ...
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13answers
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What conditions would make having them sunken into the ground the predominant way of building large structures?

As he neared the outskirts of the city the canyons of multi-storey buildings lined with coffee- and tea-houses gave way to the large squat shapes of factories, storage-halls and other industry. If it ...
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10answers
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Realistic geological and chemical composition of an edible planetary surface

We all at some point in our childhoods thought that the moon is made out of cheese. As such, I thought: under what circumstances can a planetary surface form in such a manner that it is edible (and ...
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6answers
730 views

A world without mountains

I'm relatively new to all this. I'm thinking of studying a little Earth sciences in the hope that it tells me but, up front, I want to know if I'm completely off. I want to know if a world with no ...
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5answers
310 views

Civilization on a diamond exoplanet?

If humans discovered a diamond exoplanet and then traveled there, how would they set up civilization on a diamond exoplanet? Everything needs a foundation, even on low-gravity planets (below 9.8m/s^2)...
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0answers
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Thousand Plate World: Effects [closed]

I have found this idea on a discussion on /r/worldbuilding. Anyway, the premise is as follows: The planet is earth-like in terms of size and mass. The planet has a very large amount of small, active, ...
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2answers
282 views

Thousand Plate World: Formation

I have found this idea on a discussion on /r/worldbuilding. Anyway, the premise is as follows: The planet is earth-like in terms of size and mass. The planet has a very large amount of small, active, ...
3
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2answers
90 views

Survival of Eukaryotic Life in Stagnant Oceans

I was trying to figure out the early geological/biological history of the world I'm creating, and I was wondering about the development of early life. Basically, I've envisioned a world where ...
9
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4answers
938 views

How long does it take for islands to form after an underwater volcanic eruption?

So, vaguely, I remember from earth science that when submarine volcanoes erupt they eventually form archipelagos. My question actually has several parts; Starting with the first eruption to break ...
13
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1answer
239 views

Planet-wide vocalizations: is there a natural limit preventing it?

Premise I recently recalled when the Chelyabinsk meteor crashed overhead in 2013. The pressure wave was immense. The infrasounds, as recorded by nuclear missile detectors, appeared to traverse the ...
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6answers
337 views

Long Term Zircon Data Storage

Question How can Zircon be used to record data for generations of life forms? Requirements Must be able to store the data with little to no loss of it, for a least 541 million years The data in the ...
3
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1answer
99 views

How do I figure out the size of an Earth-like world's layers and composition of elements

After getting help from the members of this site with Worldbuilding an Earth-like world around an F-Type Star, I have another question. The Planet's radius is 90% of Earth's. The Planet's rotation is ...
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2answers
230 views

What geological consequences would result from a binary planet system?

Before picking specs, I need to ensure feasibility. Only one of the planets need be Earth-like; in fact, I would prefer if the other planet were rather small and dead, like a moon. The orbits will be ...
3
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3answers
156 views

Can A Theia-Like Object Make Earth Richer?

Let's start with a little backstory--our planet underwent an impact-coalescence cycle only once, 4.5 billion years ago, when a Mars-sized object named Theia destroyed the infant Earth in a glancing ...
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2answers
117 views

All the Radioactive Metals Inside Earth's Core--How Would They Affect Convection?

In relation to a recent question of mine, this alternate Earth still has its core consisting of 84% iron, but the other 16% contains the greatest concentrations of all known species of heavy metals (...
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1answer
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If Earth's Core had ALL Of the Heavy Metals

Back home, Earth had gone through an impact-coalesce cycle only once. Since then, its core has been 84% iron, 6% nickel and the rest being labeled by The Encyclopedia of Earth: A Complete Visual ...
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12answers
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Malign Science: Counter argument for KT boundary

Premise This is a world in which humans are blissfully unaware of their own vulnerability. Needless to say, there are many vulnerabilities to address, however, this question deals only with the ...
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2answers
234 views

A blue flamestorm blasting through a system of big yellow caves?

What I "want": My fantasy world has lots of volcanos. Deep under the surface there is a root-like form of life predominant. It grows in big bundles and searches for important minerals, gases, fluids, ...
4
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3answers
195 views

Geology on low density planets

I am currently working on a piece that has a planet (about double the size of Earth). It is worth noting that this is a low density planet. Without any other factors (Earth-like atmosphere, same ...
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6answers
578 views

Ringstadt: Can my mountains be what I need them to?

When the old mining town was founded, nobody did think of this ever growing into much more than a coal-mining town. The deposits of iron-ore, aside from the already developed peat bog to the north, ...
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2answers
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Ringstadt: Getting sulphur into my water

You sure lad? For some of you folks normal beer is already an acquired taste, but this... this beer definitely is. You understand that this stuff is brewed with water from the devil's choke? You know, ...
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3answers
278 views

How much electricity could an iron core moon passing over a copper deposit on a planet generate?

Assuming the moon is the same size as ours and its core is generating a magnetic field, and the copper deposits are quite large, consisting of a tectonic plate containing huge deposits of native ...
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7answers
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What would it take for an island to sink and rise yearly and naturally

So I'm writing a book and need help to better explain this island that sinks, more on that in a moment as I give you the basic build of the planet... First, its a world on a very tilted angle. the ...
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6answers
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An iron rain to starve a planet

I have a generic Earth like planet, same atmospheric composition, and the same oceanic composition. The crust of this planet is predominantly silicon based but plenty of iron, nickel and copper. ...
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6answers
698 views

Ringstadt: How sensible is my topography?

Look at you all sitting here. Quite some of you have probably never ventured beyond the outskirts of this city, mayhaps not even past the wall? You've spent your whole lives in this place, but what do ...
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2answers
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Fantastic gas, part 2: what would be the source of a subterranean gas that's not organic in origin?

Natural gas comes can be found in the underground, but its origin are the organic rests of a long time ago. However, my gas doesn't come from dead trees or anything like that. So what's an alternative ...
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2answers
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How would we overcome the sinking problem as sediment builds up around urban areas? [closed]

As sediment builds up over the earth, it is compacted into layers of rock, which can be seen in the geological record. However, urban areas typically have good maintenance which washes away any ...
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1answer
68 views

Oceanic crust formation

I'm working on a earth-like planet with a much lower sea level (like 3000m so the mid-ocean ridge would form many islands) but is that even possible? Will the emerged ridge make some weird stuff and ...
5
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7answers
285 views

Natural barriers around medieval towns

I have a town, the capital of an empire. It covers 560 Hectares. What kind of natural barrier conforms to the following requirements: Is both heavily defensible and does not hinder trade all too ...
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6answers
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Can a habitable planet have two separate crusts, both of which can sustain life?

Can a habitable planet have two separate crusts, both of which can sustain life? I am wondering if through the planet's creation, over time through some form of mantle cooling/erosion combination, ...
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2answers
876 views

How would coral reefs thrive on this super-earth world?

I have a super-earth world. The surface of the world is shallower due to extra gravity, so shorter mountain ranges and less ocean depths. The world orbits a binary star system at a distance of the ...
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6answers
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What type of stone should I use for these hills?

The capital of a country is built on a series of stone hills that gradually lead to the ocean. The stone is noted for both the strength of castles made from it and its unique blue-green coloring. This ...
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2answers
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How tall can a humanoid creature be without alerting the rest of the planet with earthquakes?

Planet is earth sized. Fantasy medieval setting that takes place on Continent A, which is on the other side of the planet from Continent B - about as far as South America is from Asia. Continent B ...
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2answers
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Is a Continent of Karstic Plateaus Feasible

The Tsingy National Park is popular for its unique karstic plateaus. These karstic plateaus are thousands of large sharp pillars or needles that stretch towards the sky, creating a wide variety of ...
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1answer
109 views

The Rocky Side of the World Without Oil

Lately, there has been speculation of what would happen if all the untapped oil, by the handwaving powers of the gods of television and money, disappear overnight. It has been explained, in varying ...
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2answers
164 views

Starting with a map of current landforms, how can I write the geographic history of my planet?

The current worldbuilding project I have is going to be detailed - very detailed. It's about the life of an alien planet called Nemo 4, and I want to chronicle the evolutionary history of that life, ...
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2answers
114 views

Albedo of a planet like Crait

If a planet like Crait existed and was covered by (mostly) white sand, what would its average albedo be? Crait is a planet from Star Wars that has a thin layer of white salt on its surface.