Chapter 13.1

Chapter 13.1 - Chapter 13.1 Weathering Processes I.a....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 13.1 Weathering Processes I.a. Weathering : breaks down rock at Earth's surface and to some depth, below the surface, either disintegrating rock into mineral particles or dissolving it in water I.a.i. Both physical (mechanical) and chemical--> synergy, combined action of the two processes I.a.i. In most areas, upper surface of bedrock undergoes continual weathering--> regolith : broken-up rock I.a.i.1. When regolith continues to weather/transported--> formation of loose surface material I.a.i. In some areas, regolith may be missing or undeveloped--> exposing unweathered bedrock I.a.ii. Bedrock : the parent rock form from which weather regolith and soils develop (ex. color of sand derived from parent rock in background ) I.a.i.1. sediment (sandy, unconsolidated fragmental material) + weathered rock = parent material from which soil evolves I.a. Factors Influencing Weathering Processes I.a.i. Important Controls on Weathering Rates: I.a.i.1. Rock Composition and Structure (Jointing): I.a.i.1.a. Joints : fractures or separations in rock that occur without displacement of the sides (as would be the case in faulting)--> flat spaces that increase the surface area of rock exposed to both physical and chemical weathering I.a.i.1. Climate: precipitation, temperature, and freeze-thaw cycles
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Chapter 13.1 - Chapter 13.1 Weathering Processes I.a....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online