It seems to be a fact that we have to dig a certain amount to find ancient buildings, roads, tools, etc. The deeper we go the older the civilization. For example, in Barcelona there is a museum containing an ancient Roman town with houses, streets, etc. The problem is that it is now two flights down from current street level. Obviously at the time it was built it was on the surface. So what's the deal? It seems that the earth is constantly growing and covering up old stuff. Where does all this extra dirt come from? This appears to happen everywhere. Can anyone explain?
2007-01-15 10:06:05 · 7 answers · asked by fg 2 in Science & Mathematics ➔ Earth Sciences & Geology
Cities are usually located in valleys, near a river. This being lower ground, any higher elevation will progressively shed dirt due to erosion, and that will accumulate downhill, eventually covering the remains of whatever was there before.
As for things that were on top of a hill, they will not get covered by dust, so they will NOT be forgotten, and if they are left abandoned, there will be the ones getting eroded until they are no longer there, with nothing left to be discovered later...
2007-01-15 10:16:00 · answer #1 · answered by Vincent G 7 · 0⤊ 0⤋
Mountains are always being thrust up from the Earth's crust, and erosion breaks them down and washes them away. As a result, the entire surface is always accumulating a layer of debris deposited by water and air.
2007-01-15 19:03:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Many civilizations build upon the ruins of the previous buildings. Thus, the deeper you go the older the artifacts or buildings.
2007-01-15 18:13:20 · answer #3 · answered by a simple man 6 · 0⤊ 0⤋
Dust blown off nearby fields, contruction materials and landscaping earth brought in from outside the city. When they repave a street, they often put new layer of gravel and asphalt on top of existing one.
and buildings themselves tend to sink slow under their own weight.
2007-01-15 18:10:32 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Have u Sean the shooting stars? there tons that fall in every day so the earth is slowly growing all the time.
2007-01-15 19:24:01 · answer #5 · answered by JOHNNIE B 7 · 0⤊ 0⤋
Structures which are no longer used and maintained are reclaimed by the Earth and are eventually overgrown and buried.
2007-01-15 18:10:40 · answer #6 · answered by notaxpert 6 · 0⤊ 0⤋
stuff moves around.... especially when there's flooding- and people like to live near water- silt gets deposited.
2007-01-15 18:11:59 · answer #7 · answered by Anonymous · 0⤊ 0⤋