Soil Profiles and Types | GEO GIRL

[@chriscopeland1318]

Copeland Engineering here…love this channel. Just found it. We are in Austin. We design residential slabs on Kdr, Kef, Ked, Kgr, Kbu…etc. Caliche….the contractors and locals call it…”Kaleechay”! Love it!

[@tedetienne7639]

7:57 - Ah!!! The NRCS soil texture chart! I had that memorized all through college. Then when I started working professionally, nobody used it. Everyone used either USCS or AASHTO. I’d use the term “loam”, and they’d stare at me with a confused look on their faces. I had to unlearn and relearn all over again!

[@chriscopeland1318]

Great video!

[@FrancescoPaggiaro]

very interesting, thanks. It helps a lot for my university project, I want to recreate a small forest, but scientifically accurate and that kind of videos are really informative

[@GEOGIRL]

I am so glad to hear it helped you! Good luck with your project! and thanks for the feedback :)

[@FrancescoPaggiaro]

@@GEOGIRL you're welcome 💪

[@FlatWorld_Jomhuri_Regime]

It’s funny in parts of Arkansas on the north side of the Arkansas river the soil is rocky red clay, cross the river (few minutes walk) the soil is black and rich you can dig 6 feet no problem.... just thousands of years of flooding on the south side of the river

[@GEOGIRL]

Wow that is really cool how drastically the soil can change over such a small area!

[@FlatWorld_Jomhuri_Regime]

@@GEOGIRL Made better sense after you talked about flooding

[@Erewhon2024]

I don't think C:N ratio has much to do with pH. North of the warm-temperate / subtropical pine belt (essentially the Gulf Coastal Plain), caused by younger, infertile soil (was underwater, and the infertility is maintained by high leaching rates due to heavy rainfall) & high rates of forest fires (lightning due to mixing of Gulf and Continental air streams) that kills off most of the broadleaf trees, Eastern North America has mostly broadleaf forests. While rarely as acidic as are sandy soils in the Coastal Plain, they are still quite acidic except where the underlying rocks are calcareous. Go to the southern Appalachians (which has broadleaf forests), and you will be impressed by the multitude of Kalmia (mountain laurel, sheepkill) and Rhododendron (rhododendron and azalea) bushes that tend to dominate the shrub & small tree layer. Those plants, like most in the Ericaceae (blueberry or heath family) tend to die rather quickly if the pH is above 6.5 (i.e. the slightly acidic to near neutral soils that most crops like, will kill these, mostly through nutrient deficiency) let alone alkaline. While high rainfall does correlate rather strongly with soil acidity (by leaching away alkaline minerals), high rainfall karst areas (e.g. Mammoth Caves, or anywhere with lots of limestone) will be neutral or even alkaline. You can also have fairly acidic soils in deserts, if there are no evaporite deposits and the underlying geology is volcanic. Soil pH is mostly due to the underlying rocks.

[@octaviussludberry9016]

You have to love a peaty podsol.

[@charleslambert3368]

Imagine having more than 1 or 2 horizons before your spade hits bedrock. This comment is brought to you by the chalk downland gang.

[@chriscopeland1318]

A+

[@postyoda1623]

What are these autogen chapter names lmao 5:30

[@nefariousyawn]

OH NO. @GEOGIRL you should fix this.