Pedostatigraphy

Question 1

What is pedostratigraphy?

Answer 1

The study of paleosols (ancient soil horizons) developed in one or more lithic units now burried by a foramlly defined lithostratigraohic or allostratigraphic unuits

Question 2

Pedoloy

Answer 2

The study of soils

Question 3

Soil

Answer 3

Chemically and physically weathered rock that is not eroded or transported but remained in place

Question 4

Paleosol

Answer 4

An ancient soil preserved in the rock record

Question 5

List and define the soil horizons from top down

Answer 5

O horizon - Loose and parly decayed organic matter

A horizon - Mineral matter mixed with some humus

E horizon - Zone of eluvation and leaching

B horizon - Accumulation of clay transported from above

C horizon - partially altered parent material

Unweathered parent material

Question 6

Soil formation is influenced by a number of factors:

Answer 6

Climate
Substrate composition
Slope sttepness
Drainage
Time
Vegetation

Question 7

Pedostratigraphy

Answer 7

The study of pedologic horizons in the stratigraphy

Question 8

Pedostratigraphic unit

Answer 8

Is a body of rock that consists of one or more pedologic horizons developed in one or more lithostratigraphic, allostratigraphic, or lithodemic units and is overlain by one or more formally defined litho. or allo. units

Question 9

naming one

Answer 9

Compound name consisting of a geographic name and rank in this case ‘geosol’

Question 10

How do you distinguish between a pedostratigraphic unit and other stratigraphic units?

Answer 10

1) It is a product of surface alteration of one or more older material units
2) Its lithology and other properties differ markedly from of the parent materials
3) a single pedostratigraphic unit may be formed in situ in parent material units of diverse compositions and ages