Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.
Biological weathering is weathering caused by plants and animals. Plants and animals release acid forming chemicals that cause weathering and also contribute to the breaking down of rocks and landforms.
Collect at least five rock samples in your place and take a photo of the samples. Describe the characteristics of each rock depending on their appearance, texture, color, and layers (or bands). Then classify them as to igneous sedimentary, or metamorphic.
Type of Rock
Sedimentary Rock
(Sandstone)
Description
Exhibits a clastic texture and contains mostly sand grains
Importance
Sandstones are economically important as major reservoirs for both petroleum and water, as building materials, and as valuable sources of metallic ores. Most significantly, they are the single most useful sedimentary rock type for deciphering Earth history.
Type of Rock
Sedimentary Rock
(Sandstone)
Description
Exhibits a clastic texture, has layers and contains mostly sand grains.
Importance
Sandstones are economically important as major reservoirs for both petroleum and water, as building materials, and as valuable sources of metallic ores. Most significantly, they are the single most useful sedimentary rock type for deciphering Earth history.
Type of Rock
SedimentaryRock
(Sandstone)
Description
Exhibits a clastic texture and contains mostly sand grains
Importance
Sandstones are economically important as major reservoirs for both petroleum and water, as building materials, and as valuable sources of metallic ores. Most significantly, they are the single most useful sedimentary rock type for deciphering Earth history.
Type of Rock
Sedimentary Rock
(Arkosic Sandstone)
Description
Exhibits a clastic texture and contains mostly sand size feldspar (detrital) grains *rose
Importance
Sandstones are economically important as major reservoirs for both petroleum and water, as building materials, and as valuable sources of metallic ores. Most significantly, they are the single most useful sedimentary rock type for deciphering Earth history.
Type of Rock
Sedimentary Rock
(Sandstone)
Description
Exhibits a clastic texture and contains mostly sand grains
Importance
Sandstones are economically important as major reservoirs for both petroleum and water, as building materials, and as valuable sources of metallic ores. Most significantly, they are the single most useful sedimentary rock type for deciphering Earth history.