The diagram shows soil Which two processes produced
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The diagram shows soil. Which two processes produced the layer of dark brown to black soil? (1) melting and solidification (2) weathering and biologic activity (3) erosion and uplifting (4) compaction and cementation
Weathering Erosion
WEATHERING is the breakdown of Earth’s surface (physical & chemical).
WEATHERING is the breakdown of Earth’s surface (physical & chemical). EROSION is the transportation of weathered sediments. The two things usually occur together!
There are four AGENTS OF EROSION Wind Water Glaciers Mass Wasting (Gravity)
Agents of erosion leave clues on the sediments… • Water- smooth and round
Agents of erosion leave clues on the sediments… • Water- smooth and round • Wind- flat edge with holes
Agents of erosion leave clues on the sediments… • Water- smooth and round • Wind- flat edge with holes • Glaciers- “scraped” with visible lines
Agents of erosion leave clues on the sediments… • Water- smooth and round • Wind- flat edge with holes • Glaciers- “scraped” with visible lines • Mass Wasting- all shapes and sizes (Gravity)
The sedimentary rocks conglomerate and breccia are shown below N O I S A R B A ! Conglomerate Breccia They are the same in most respects, except for the fact that one was formed in water and the other was not. Which formed in water and how can you tell? (1) Breccia, because it has angular fragments (2) Conglomerate, because it has angular fragments (3) Breccia, because it has rounded fragments (4) Conglomerate, because it has rounded fragments
Glacier!
Wind!
Gravity! (Mass Wasting)
Water!
Wind on Mars!