why is it so?pulltabs i have mostly found of late are deeper than the coins or other more desirable targets.why do pulltabs go deeper into thje ground than some coins.when i think i have a good target and dig it up and up comes a pulltab,nothing else in the hole.pulltabs are mostly lighter,have a larger surface than some coins and yet go deeper into the ground.again,why is it so,emubob
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pulltabs?
- Thread starter emubob
- Start date
He makes a good point though about the profile of a pulltab and how they oddly find depth beyond coins. Coins, like pennies have been around for decades and and more decades, but strangely pulltabs can sink below coins. Most are likely buried deeper during dirt relocating,, but the same should logically happen equally even more with coins. Just sayin'
ChicagoJohn
New member
I noticed that many pulltabs go deep! I guess that worms, rain and cut grass make it go deeper! Light weight make deeper but I don't know!
heavier items have to spin to sink.
Whats missing from this discussion are the dates of the coins found 'above' pulltabs.
If you're finding pulltabs deeper than say Indian head pennies in the same area, then it is sort of a mystery at first glance! But mysteries are there to be solved.
A lot could depend on the soil at the search site.
A site could have a variety of soils; filled-in soil, loose easy digging soil, hard packed soil and rocky soil.
For example, if the area has random rocky areas that could explain why a pull tab might sink lower in the clean soil areas whereas an old coin a few feet away in a rocky area would prevent it from sinking normally over the decades. I've found Barber dimes only a couple inches deep in pebble/rocky soil. At the same area only a few yards away the Barbers were anywhere from 8 to 12" deep in non-rocky soil.
In all the digging i've done over the years, i can only remember finding a few pulltabs deeper than 6". The vast majority were from surface to around 3 or 4".
And those few deep pulltabs were in areas i strongly suspect were filled-in sometime in the past.
If you're finding pulltabs deeper than say Indian head pennies in the same area, then it is sort of a mystery at first glance! But mysteries are there to be solved.
A lot could depend on the soil at the search site.
A site could have a variety of soils; filled-in soil, loose easy digging soil, hard packed soil and rocky soil.
For example, if the area has random rocky areas that could explain why a pull tab might sink lower in the clean soil areas whereas an old coin a few feet away in a rocky area would prevent it from sinking normally over the decades. I've found Barber dimes only a couple inches deep in pebble/rocky soil. At the same area only a few yards away the Barbers were anywhere from 8 to 12" deep in non-rocky soil.
In all the digging i've done over the years, i can only remember finding a few pulltabs deeper than 6". The vast majority were from surface to around 3 or 4".
And those few deep pulltabs were in areas i strongly suspect were filled-in sometime in the past.
ChicagoJohn said:
I think John hit on something here. I think worms have a great deal to do with why things "sink" rather than simply the relative density of the object compared with the soil. Think about what worms do . . . they burrow through the soil eating it as they go and periodically come to the surface to poop it out as castings. The net effect over time is that soil is removed from below an object and redeposited above the object. The object has no choice but to settle into voids created by the worms.
- pete
ChicagoJohn
New member
I know that depends on ground! I know one area that I found old zinc penny and 1920 wheat cent at same depth about 6 inch deep. IT stopped at 6 inch deep because of rocks below 6 inch deep. I don't like sand/soil mixed! I metal detecting 1900's house and soil is so soft that 1970's coins are so deep around 8 inch deep! All depends on ground! I noticed that coins is not too deep at about 45 degree slope that I found 1920 Mercury dime at about 4 inch deep at sharp slope while I found 1991 quarter at about 8 inch deep at open flat ground! I found some old silver coins and buffalo nickels at old quarry that go down to only 3 inch deep because of limestone rocks!
JimGilmore
Active member
I have said it over and over but few listen.....
All items will settle to a point at which their weight and surface area have become balanced to the hardness of the strata (makeup of the soil) will support them.
Gold will settle rings will usually settle at the deepest level because the actual surface area is very small. Pull tabs are lighter than most everything but have the next smallest surface area. Coins have the largest area of most items we normally find unless you wish to talk about belt buckles and such items.
In areas that are arid Items rarely sink but will settle on their sides. In most ares with grass you will notice that items seem deeper but much of that depth is due not to increased sinking but a buildup over time of thats and such that is the amount that grass will grow above the pathways around the park.
Old parks often have paths that look as though they have sunk but the fact is that the thatch build up over time, accounts for more material per year than what the coins sink.
Often parks have been seeded directly over ground without removing the rocks and hard ground that is in the existing soil and as such coins will have NO place to sink. But the grass build up is fairly rapid so items in short grass will seem to be 2-3 inches depth though they are onlt 1/2 inch below the base of the new grass.
All items will settle to a point at which their weight and surface area have become balanced to the hardness of the strata (makeup of the soil) will support them.
Gold will settle rings will usually settle at the deepest level because the actual surface area is very small. Pull tabs are lighter than most everything but have the next smallest surface area. Coins have the largest area of most items we normally find unless you wish to talk about belt buckles and such items.
In areas that are arid Items rarely sink but will settle on their sides. In most ares with grass you will notice that items seem deeper but much of that depth is due not to increased sinking but a buildup over time of thats and such that is the amount that grass will grow above the pathways around the park.
Old parks often have paths that look as though they have sunk but the fact is that the thatch build up over time, accounts for more material per year than what the coins sink.
Often parks have been seeded directly over ground without removing the rocks and hard ground that is in the existing soil and as such coins will have NO place to sink. But the grass build up is fairly rapid so items in short grass will seem to be 2-3 inches depth though they are onlt 1/2 inch below the base of the new grass.