Final answer:
Chemically weathered rock materials are primarily transported in the stream's dissolved load, where ions from mineral weathering are carried in solution by the water.
Step-by-step explanation:
The chemically weathered rock that is transported via streams can be carried in different ways. The options given correspond to the types of loads and capacities of a stream to carry materials.
- Bed load consists of particles that are too heavy to be carried in suspension and are moved along the bottom of the stream bed by rolling, sliding, or hopping.
- Suspended load includes finer particles, such as silt and clay, that are suspended in the water and carried along with the flow.
- Capacity refers to the total amount of sediment a stream can transport, which is not the direct answer to the question, but a concept related to the types of loads.
- Dissolved load is made up of ions from mineral weathering that are carried in solution by the stream water.
Chemically weathered rocks are primarily transported in the stream's dissolved load. Minerals that have been dissolved in water from the processes of chemical weathering are carried invisibly in streams. Once these minerals reach an area where the water evaporates, they precipitate out of the solution and can form sedimentary rocks like limestone and evaporite deposits such as salt.