Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [regional-geology]

The tag has no usage guidance.

0
votes
0answers
16 views

What is an inversion

What is an inversion? What happens to the sediment in between? I understand that as the crusts move together a bulging appears.
1
vote
0answers
53 views

How Big Were the Siberian Traps ORIGINALLY?

252 million years ago, Siberia was subject to a mass series of flood basalt eruptions, creating a large igneous province called the Siberian Traps. Today, it measures 2.7 million square miles in area ...
1
vote
0answers
28 views

How to create Indonesian environmental conditions in India?

Need to create and maintain Biofloc for fish farming in India, it's really successful in Indonesia and I believe it's due to environmental conditions. Can we replicate the same in India?
5
votes
1answer
39 views

Identification of rock formation along Wales coast

I hope that you can help me, my wife and I visited National Trust - Stackpole, Pembrokeshire last week where I took a couple of hundred photos. I've attached a photo of the coloured cliffs there. For ...
6
votes
2answers
3k views

What is the average color of dirt?

Where I live the soil is red. Is there a map or chart where you can see the average color of the dirt according to geographical location? What would the color be if all of the dirt on Earth was ...
0
votes
1answer
62 views

What kind of stone is this?

Years ago, I bought from a flea market two strange looking stones, that the owner said he had found under the sand of a dune in the desert (I don’t remember which). Maybe it’s true, maybe not, but I ...
2
votes
1answer
37 views

Where can I find information about the basic concepts of sedimentary basins?

There are a lot of papers on the web but they don't explain the concepts, they just mention them, taking for granted that the reader knows the concepts. I mean piggyback basin, forearc, back arc, ...
5
votes
1answer
192 views

Rock ID: hard, smooth, found on hill south of Nashville

Could use help identifying this rock. It's face has some variation in color which ranges from cream to caramel. (Some variation could be from different exposure to the weather.) The rock face is ...
13
votes
1answer
511 views

What causes these circular swirls of islands?

I was following the boarder of the US and Canada on Google Maps, because, and found these interesting circular patterns of islands near the Northwest Angle. I have heard of geologic folding but I have ...
4
votes
2answers
101 views

The Geological make-up in my area

I live in the Piedmont area of Virginia and only an hour and a half from the foothills of the Blue Ridge Mountains. I recently found a number of what I believe to be petrified wood specimens. There ...
2
votes
1answer
108 views

What current evidence is there for a Glacial Hudson River Valley deluge?

Some have studied the Lake Missoula glacial dam breaking West and having created the Coulees of Eastern Washington. Who's studied the glacial dam breaking South and having cleared the Hudson River ...
8
votes
2answers
460 views

Why are South African mountains short and flat?

I drove through South Africa from Cape Town to Mozambique and noticed that almost all heights and mountains were no higher than approx 200-400 meters and had a flat top, just like the iconic Table ...
4
votes
2answers
364 views

To what extent has the Earth's surface been geologically mapped?

To what extent has the Earth's surface been geologically mapped? For instance, what fraction has been surveyed at 1:10 000, 1:100 000 or 1:1 000 000 scale? Edit: By 'surface' I mean land surface, ...
8
votes
2answers
11k views

How can I learn to spot fossils and fossil-bearing rocks on the Jurassic coast?

Due to a pleasant change in my circumstances, I have been to Lyme Regis several times recently, and it seems as though I'm going to be a regular visitor over the next few years. As a former biologist ...
7
votes
1answer
270 views

Alpine schistosity

I often find the term Alpine schistosity (schistosité alpine in French, scistosità alpina in Italian) in texts about Alpine geology. Chronologically ordered phases of Alpine schistosity producing ...
11
votes
1answer
1k views

How does the sand appear on Hawaiian beaches

It's quite surprising to me that there's only one beach with black sand on Hawaii (maybe not exactly one beach, but it's only a very small fraction). The concern is, if the whole Hawaii is volcanic, ...
12
votes
1answer
441 views

What caused the Cretaceous uplift of the Harz mountains (Germany)

What are the likely stresses that caused the uplift of the Harz mountains? Was the uplift connected to another orogeny, lithospheric-scale folding or a mantle process?
10
votes
1answer
108 views

Is there a database of the geologic/stratigraphic units of France?

Is there a page where I can look up rock unit definitions for France similar to: https://www.bgs.ac.uk/lexicon/home.cfm http://www.bgr.de/app/litholex/index.php I did some searching for this, but ...