/r/geology

Photograph via snooOG

The scientific study of the origin, history, and structure of the Earth.

The scientific study of the origin, history, and structure of the Earth.

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And see our wiki page for a compilation of useful resources.

/r/geology

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34

Hey, I finally have something to contribute. A slightly different perspective on the Giant's Causeway, Co. Antrim, Northern Ireland.

0 Comments
2023/03/26
21:18 UTC

26

Columnar basalt in Sveitarfélagio Hornafjörour, Iceland

2 Comments
2023/03/26
21:08 UTC

2

gpt4 the geology rhyme master

Here's a simple rhyme to help kids remember some common minerals and their key characteristics:

----------------------------
|        Minerals          |
----------------------------
|                          |
| Quartz:                  |
|                          |
| "Hard and glassy,         |
|  quartz is clear or flashy!"|
|                          |
| Feldspar:                |
|                          |
| "Blocky cleavage it displays,|
|  feldspar's found in many ways!"|
|                          |
| Mica:                    |
|                          |
| "Thin and flaky,           |
|  mica sheets are not shaky!"|
|                          |
| Calcite:                 |
|                          |
| "With a fizz it reacts,    |
|  calcite's found in many cracks!"|
|                          |
| Pyrite:                  |
|                          |
| "Fool's gold it may be,    |
|  pyrite shines with glee!"  |
|                          |
----------------------------

This rhyme can be a fun way to introduce kids to some common minerals and help them remember their characteristics. Encourage them to interact with real mineral samples when possible, and use the rhyme as a memory aid when learning about the properties of each mineral.

Here's a simple visual guide to help kids identify some common rock types. Each rock type is accompanied by a short rhyme to help kids remember the characteristics of the rock.

---------------------------
|      Igneous Rocks      |
---------------------------
|                         |
| Granite:                |
|                         |
| "Speckled mix of black, |
|  white, and gray,       |
|  granite's here to stay!"|
|                         |
| Basalt:                 |
|                         |
| "Dark and fine in grain, |
|  basalt's a volcano's   |
|  claim to fame!"        |
|                         |
---------------------------
|    Sedimentary Rocks    |
---------------------------
|                         |
| Sandstone:              |
|                         |
| "Grains of sand all snug,|
|  bound together in a hug!"|
|                         |
| Shale:                  |
|                         |
| "Clay and silt so fine,  |
|  shale forms in layers   |
|  that align!"           |
|                         |
| Limestone:              |
|                         |
| "Often light and gray,   |
|  limestone's made of     |
|  critters' remains!"    |
|                         |
---------------------------
|    Metamorphic Rocks    |
---------------------------
|                         |
| Schist:                 |
|                         |
| "Shiny minerals that glisten,|
|  in schist, they all listen!"|
|                         |
| Gneiss:                 |
|                         |
| "Bands of light and dark  |
|  dance, gneiss forms in a |
|  metamorphic trance!"    |
|                         |
| Marble:                 |
|                         |
| "Limestone's new attire,  |
|  marble's a stone that    |
|  won't tire!"            |
|                         |
---------------------------

This visual guide can be printed out or drawn on a large poster board to help kids identify and learn about these common rock types. Encourage kids to touch and examine real rock samples when possible, and use the rhymes to help them remember the characteristics of each rock type.

0 Comments
2023/03/26
20:08 UTC

58

Y'all like basalt columns?

2 Comments
2023/03/26
19:25 UTC

153

I had some basalt columns to contribute. Devils Post-pile, CA.

2 Comments
2023/03/26
17:52 UTC

38

In the jaws of Columnar Basalt, Oregon Coast.

1 Comment
2023/03/26
16:13 UTC

1

Hells Canyon and the Ringold Formation

Was looking for basalt column pics to rep Idaho and found this lecture. https://youtu.be/p9BX-ZJhAWQ

1 Comment
2023/03/26
15:03 UTC

339

Question while we're on basalt columns. Why are some hexagons and some are pentagons?

37 Comments
2023/03/26
14:48 UTC

1

Question about a gift

So me and my partners anniversary is coming up in a month or so and I want to get them a nicer gift. Ever since they were a kid, they have loved rocks and what not, collecting all different kinds of rocks. They have often expressed to me the desire to be able to refine some of the rocks they find. Recently they mentioned some of those things and called them lapidary equipment. I want to get them some of these things but am unsure what I need to get or if it’ll be too expensive. They mentioned lapidary equipment, a cab machine, and a saw and grinder. Any help figuring out what I need to get or how expensive it’ll be? Thanks!

0 Comments
2023/03/26
14:41 UTC

701

I heard you like basalt columns! Staffa, Scotland (geology students for scale)

12 Comments
2023/03/26
13:37 UTC

48

My turn to post some columnar basalt - taken near Hilo, Hawaii

0 Comments
2023/03/26
08:30 UTC

298

Let's not stop with the lovely basalt columns: Panská skála in Czechia

Photo credit and additional info here: https://rock-panska-skala.czech-mountains.eu/

4 Comments
2023/03/26
08:28 UTC

89

Columnar basalt at Palouse Falls, WA, USA.

6 Comments
2023/03/26
07:22 UTC

100

BASALT SWEEP - Palisade Falls, MT

1 Comment
2023/03/26
06:35 UTC

0

GEOLOGIST | WHAT DOES A GEOLOGIST DO?

0 Comments
2023/03/26
02:44 UTC

3

is this a big ol' hunk or raw unakite?

4 Comments
2023/03/26
02:34 UTC

146

Glacial Striations in Columnar Basalt (Devil's Postpile, Ca)

2 Comments
2023/03/25
23:44 UTC

230

Basalt columns, then a river ran through them. Toketee Falls, OR.

One of my favorite PNW spots.

6 Comments
2023/03/25
23:38 UTC

21

Columnar Trachyte in Vanocker Canyon, SD. From my field camp experience summer of 2022.

0 Comments
2023/03/25
20:53 UTC

42

Yellowstone National Park columnar joints checking in. Overhanging Clif

1 Comment
2023/03/25
20:32 UTC

55

More columnar jointing at Brandywine falls in British Columbia

I believe these are basaltic lavas from the Garibaldi volcanics

1 Comment
2023/03/25
18:42 UTC

59

The Asteroid__ Giant concretion weathering out of the host rock. On the southern Oregon coast. About 5 feet across. Coos co. Barview district. Bay beach near Fossil Point.

2 Comments
2023/03/25
18:12 UTC

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