It means the rock that a small piece broke off from. Outside our local library is a boulder quite different from our local sandstone. It is labelled as 'an erratic block of andesitic agglomerate' which broke off 'from the parent rock in Cumbria some millions of years ago'. It was carried about 120 miles by a glacier.
Limestone does not have a parent rock.
Chert is a type of sedimentary rock made up of quartz and has a cryptocrystalline structure. It is often considered the parent rock of flint, jasper, and agate due to their similar composition and formation processes.
Limestone doesn't normally have a parent rock. One exception to this may be a detrital limestone, whose parent rock would however also be limestone!
No, parent rock refers to the original rock from which soil is formed through weathering processes. Weathered rock particles are the result of the breakdown of parent rock due to physical, chemical, or biological processes.
Conglomerate Rock.
Marble!
rock called basalt
The parent rock of a particular sedimentary layer can provide clues about the history of the formation of that layer.
Soil comes from parent rock. Due to weathering the action of plant roots etc the parent rock is broken up and over many years gets incorporated into the soil. So the composition of the parent rock will affect the soil that develops over it. The soil could be lacking in certain minerals due to the parent rock. The soil could be acidic or basic due to the parent rock. But there is more to soil composition than just the parent rock.
sometimes rocks break off into pices the rock the pices came from is known as the parent rock
The parent rock (protolith) is the rock type that existed before a rock is altered into metamorphic rock. For instance, shale (sedimentary rock) is the parent rock of slate (metamorphic rock).
Limestone is the parent of rock of non foliated metamorphic. This is a very old type of rock.