What is the difference between stratiform and stratabound?
The terms stratum, bed and layer require precise definition. The terms stratiform orebody and stratabound orebody are defined and it is suggested that stratiform orebodies are a particular form of stratabound orebodies. (b) Those orebodies in which the ore has the form of a layer, i.e., of a stratum.
What does stratabound mean?
Said of a mineral deposit confined to a single stratigraphic unit. The term can refer to a stratiform deposit, to variously oriented orebodies contained within the unit, or to a deposit containing veinlets and alteration zones that may or may not be strictly conformable with bedding. Ref: AGI.
What is a stratiform deposit?
In mineral deposit: Stratiform deposits. A final class of hydrothermal deposit is called stratiform because the ore minerals are always confined within specific strata and are distributed in a manner that resembles particles in a sedimentary rock.
What are sediment-hosted stratiform copper deposits?
Sediment-hosted stratiform copper deposits are the products of evolving basin-scale fluid-flow systems that include source(s) of metal and S, source(s) of metal- and S-transporting fluids, the transport paths of these fluids, a thermal and/or hydraulic pump to collect and drive the fluids, and the chemical and physical …
What is stratiform precipitation?
Stratiform clouds cover large areas but show relatively little vertical development. Stratiform precipitation, in general, is relatively continuous and uniform in intensity (i.e., steady rain versus rain showers).
How are stratiform deposits formed?
Sedimentary rock-hosted stratiform copper deposits form by movement of oxidized, copper-bearing fluids across a reduction front that results in the precipitation of copper sulfides.
What is a supergroup in geology?
A supergroup is a set of two or more associated groups and/or formations that share certain lithological characteristics. A supergroup may be made up of different groups in different geographical areas.
What is sediment-hosted copper?
Sediment-hosted copper deposits are formed by fluid mixing in permeable sedimentary and. (more rarely) volcanic rocks. Two fluids are involved: an oxidized brine carrying copper as. a chloride complex, and a reduced fluid, commonly formed in the presence of anaerobic. sulfate-reducing bacteria.
Where is sediment-hosted copper found?
Sediment-hosted stratiform* copper deposits (hereafter termed stratiform copper deposits) are an important, economically attractive, world-class mineral deposit type, traditionally represented by supergiants such as the Kupferschiefer of north-central Europe and the Copper- belt of Central Africa.
What is convective precipitation?
Convection Precipitation. Convective precipitation results from the lifting or upward movement of air that is warmer and lighter than its colder denser surroundings (figure 3). Typically, on a hot day the ground surface becomes heated, as does the air in contact with it.
What are convective showers?
Episodes of convective precipitation falling in an area no more than about 10 km wide and for a time period of less than about one-half hour.