How to distinguish sandstone and limestone
The hardness of sandstone can be high or lowWeathered sandstone can be stripped out of sandLow hardness of metal products can easily trace traces of limestoneAnd the weathering of limestone is mainly chemical dissolution
Geomorphic featuresThe texture of hard sandstone usually easy to form a tall cliff edges can refer to the Taihang mountains peaks cliff landformDanxia landformLimestone is a typical Karst landform due to chemical weathering and easy to be corrodedThe pictures of these landforms can be made by BaiduThe sandy soil in the sandstone area is suitable for the growth of pine and suitable for other vegetationLimestone weathering will only have less soil and not the natural conditions of sand is generally not long pineOr it should be said that the situation of vegetation coverage to be worse than the sandstone
hydrochloric acidIt is certain that the limestone will be foamed with acidHowever, some calcium carbonate Cemented Sandstone encountered acid also bubbleJust a lesser degree and after completion of the reaction surface will have residual sandSo whether or not the bubble can only distinguish the parts and can not be completely separated
First appearance1 colorThe limestone gray grayish black and gray dark grayThe sandstone rich colors mainly yellow with reddish brown gray green and yellow.Sometimes there are gray sandstone needs other ways2 touchSandstone clastic rock appearance rough touch the surface of the particles have a clear texture can be seen carefully observed by the composition of sandLimestone for carbonate rocks in most cases do not have a clear sense of granular particles can not be observed sandSo you can tell the difference between the vast majority of sandstone and limestoneHowever, some of the limestone has a more granular texture and a small particleBut experienced geologists can see at a glance not sandIf the difference does not continue to refer to the following
