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PSS 2432 Exam 1 Questions & Answers 2024/2025 $10.49   Add to cart

Exam (elaborations)

PSS 2432 Exam 1 Questions & Answers 2024/2025

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PSS 2432 Exam 1 Questions & Answers 2024/2025 elluviation - ANSWERS residuum PM - ANSWERSoriginal unwea material - lacustrine PM - ANSWERS- lake deposited - alluvium PM - ANSWERSstream/river deposited - marine PM - ANSWERS- ocean deposited - colluvium PM - ANSWERS- gravity depos...

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  • August 14, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • PSS 2432
  • PSS 2432
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Bensuda
PSS 2432 Exam 1 Questions & Answers
2024/2025

elluviation - ANSWERS



residuum PM - ANSWERSoriginal unwea material



- lacustrine PM - ANSWERS- lake deposited



- alluvium PM - ANSWERSstream/river deposited



- marine PM - ANSWERS- ocean deposited



- colluvium PM - ANSWERS- gravity deposited



- eolian PM - ANSWERS- wind deposited



- moraine/till PM - ANSWERS- ice deposited



5 Master Horizons

(Old Americans Eat Burgers Constantly) - ANSWERSO

A

E

B

C

(R Layer)

,O Hor. - ANSWERS- formed by accumulation of leaf litter

- important C storage

- virtually 100% OM



- not all soils have

- (none in Lubbock)

- forests or grasslands



A Hor. - ANSWERS"topsoil"



- more OM and darker than subsoil



- largely mineral soil

- weak structure

- many plant roots



E Hor. - ANSWERS"alluvial"



- max leaching of clays and iron oxides occurs leaving resistant minerals (quartz)

- known as elevation



- lighter in color

- directly below A hor.

- take time to form

- often destroyed by cultivation



B Hor. - ANSWERS"illuviation"

- if lies below plow layer = "subsoil"

, - accumulation of:

- clay,

- iron,

- aluminum oxides

- and/or calcium carbonates



stronger structural devel. with substantial quantity of roots



- redder hue and brighter chroma than A hor.

- take time to form



C Hor. - ANSWERS* underlying, unconsolidated materials below solum

* sometimes serves as PM for solum



* largely unaffected by wea or biol activity

* weak to no structure

* few roots

* almost no pedogenic devel.



R Layer/Hor. - ANSWERSbedrock with little evidence of weathering



EX:

limestone,

granite,

basalt



typical soil horinization - ANSWERSABC

or

ABR

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