Gold dirt.

[Coop]

Anyone know the makeup of this stuff? I'm curious from a geology perspective.

It will pack in better after a rain too, right? Right now I just dumped a pile on the base-rocks and I'm hoping it will settle in.

[Taylor_P]

for sure. every thing but cedar rot packs better after rain. gold dirt on base rocks will give you a vary solid base after a bit of rain. add another dump after it rains and you'll be set.

[Tom P]

Originally posted by Coop
Anyone know the makeup of this stuff? I'm curious from a geology perspective.

'Gold' dirt as we know it on the coast is weathered till, aka the 'B' horizon. It has the 'gold' like rusty colour due to the concentration of Iron oxides. See below for more details.

from http://web.mala.bc.ca/earle/geol312/unit4.pdf

Soil profiles are commonly divided into “horizons”. The uppermost layer, beneath the partly decayed organic matter, is the A horizon. Most of the humus is confined to this layer. The E horizon represents a zone of leaching (or eluviation). Iron oxides and clays are depleted in this layer, and enriched in the underlying B horizon. The C horizon comprises material that is only marginally different from the underlying rock or overburden (the parent material). If the parent material is solid rock, then the C horizon will be broken and weathered rock. If the parent material is unconsolidated (eg. till or alluvium), then it may be difficult to distinguish this from the C horizon. The type of soil which will be found at any particular site will depend on the climate, the type of vegetation, the slope of the site and the drainage, the composition of the parent material (ie. the bedrock or drift), and the amount of time during which the soil has been able to develop.

[Coop]

Thanks!

[RITALIN]

my jumps are made from all gold and fill that will only pack

[Darryl]

Originally posted by .f|oW.
'Gold' dirt as we know it on the coast is weathered till, aka the 'B' horizon. It has the 'gold' like rusty colour due to the concentration of Iron oxides. See below for more details.

from http://web.mala.bc.ca/earle/geol312/unit4.pdf

Soil profiles are commonly divided into “horizons”. The uppermost layer, beneath the partly decayed organic matter, is the A horizon. Most of the humus is confined to this layer. The E horizon represents a zone of leaching (or eluviation). Iron oxides and clays are depleted in this layer, and enriched in the underlying B horizon. The C horizon comprises material that is only marginally different from the underlying rock or overburden (the parent material). If the parent material is solid rock, then the C horizon will be broken and weathered rock. If the parent material is unconsolidated (eg. till or alluvium), then it may be difficult to distinguish this from the C horizon. The type of soil which will be found at any particular site will depend on the climate, the type of vegetation, the slope of the site and the drainage, the composition of the parent material (ie. the bedrock or drift), and the amount of time during which the soil has been able to develop.


Wow thanks for that info, my brain hurts a bit now though.

[trail worker]

Originally posted by .f|oW.
'Gold' dirt as we know it on the coast is weathered till, aka the 'B' horizon. It has the 'gold' like rusty colour due to the concentration of Iron oxides. See below for more details.

from http://web.mala.bc.ca/earle/geol312/unit4.pdf

Soil profiles are commonly divided into “horizons”. The uppermost layer, beneath the partly decayed organic matter, is the A horizon. Most of the humus is confined to this layer. The E horizon represents a zone of leaching (or eluviation). Iron oxides and clays are depleted in this layer, and enriched in the underlying B horizon. The C horizon comprises material that is only marginally different from the underlying rock or overburden (the parent material). If the parent material is solid rock, then the C horizon will be broken and weathered rock. If the parent material is unconsolidated (eg. till or alluvium), then it may be difficult to distinguish this from the C horizon. The type of soil which will be found at any particular site will depend on the climate, the type of vegetation, the slope of the site and the drainage, the composition of the parent material (ie. the bedrock or drift), and the amount of time during which the soil has been able to develop.

ahhh..I'm glad you typed all that out...saved me alot of work!

people just don't realise how intricate soils are. they're the basis of the world, pretty much..yet people don't often give soils much more than a glance. unless you'r a gardener.

[Tom P]

Originally posted by trail worker
unless you'r a gardener.

or a forester ;)

[Formulaphoto]

or a trail builder.