parent rock

But however small these fragments, they still have the same properties as the parent rock.

The properties of the clay derive from the parent rock.

The parent rock is granite, with some slate in the southern parts of the wood.

If the parent rock is hard, this can cause quite deep erosion of the rock over many years.

Together they reached a place where a jagged pinnacle had split off from the mass of parent rock.

Its usually harder than the parent rock, yes?

Different types form under different conditions and parent rock.

The second layer is the basal one that was developed through the weathering of the parent rock.

Disguised as a rock, she is placed in the path between the Eagle and the parent rock's gully.

The mineral constituents of gravel may be more similar to that of the parent rock.

This lack of oxygen leads to anaerobic conditions which reduce the iron in the parent rock.

Granite parent rock with coarse sandy soils Relatively exposed aspects.

It owes its depth to its overall size and the stability of the parent rock.

The soils are calcareous, made up of a calcium silicate parent rock.

They develop by intensive and long-lasting weathering of the underlying parent rock.

Description: The substrate or parent rock material in the habitat from which the specimen was collected.

Their parent rocks were peridotites from the upper mantle.

The soil characteristics are influenced to a limited extent by the topography, vegetation and parent rock.

The geology of the area is very young alluvium surrounded by very old parent rock.

Inset: a vein of ore in parent rock.

The effectiveness of water in weathering parent rock material depends on seasonal and daily temperature fluctuations.

Possibly the parent rocks underwent postmagmatic alterations before being metamorphosed.

Assisted by Alan Carter, he scans the parent rock.

The natural vegetation is grassland/scrubland due the thin soil influenced by the parent rock.

Parent rock, also referred to as substratum, refers to the original rock from which something else was formed.