From Geology Science:
Sandstone is a sedimentary rock composed mainly of sand-sized mineral particles or rock fragments. It is a common rock type that is found all around the world, often forming in areas where there is a lot of sand accumulation, such as in deserts, riverbeds, or coastal areas.
The mineral composition of sandstone can vary widely, but common minerals include quartz, feldspar, mica, and clay minerals. The colour of sandstone can also vary widely depending on the mineral composition and impurities, ranging from white or light grey to red, brown, or even green.
Sandstone is typically a well-cemented rock, meaning that the sand grains are held together by some type of mineral cement, such as silica, calcium carbonate, or iron oxide. The degree of cementation can vary, and this can affect the strength and durability of the rock.
So, it's Cement that binds the grains together. Just to reiterate, Cement is a secondary mineral that forms after deposition and during burial of the sandstone. These cementing materials may be either silicate minerals or non-silicate minerals, such as calcite. Silica-based Cementation, then, is one of the processes of cementing minerals coating the sediment grains and gluing them together into a fused rock.
Although a durable material, sandstone is also naturally porous, making it prone to erosion if subjected to water and wind - natural weathering and atmospheric pollution - over time.
Take a look at the area around the coordinates.
Message me with the following information:
- What kind of rock can you see on both corners of the intersection?
- The rock would originally have been cut clean. What has made it look like it is today?
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