Frost weathering - Wikipedia
网页Frost weathering is a collective term for several mechanical weathering processes induced by stresses created by the freezing of water into ice. The term serves as an umbrella term for a variety of processes, such as frost …
Weathering - National Geographic Society
网页2024年4月24日 — When ice melts, liquid water performs the act of erosion by carrying away the tiny rock fragments lost in the split. This specific process (the freeze-thaw cycle) is called frost weathering or cryofracturing. Temperature changes can also contribute to mechanical weathering in a process called thermal stress.
Frost Wedging Weathering | Definition, Process & Examples
网页2023年11月21日 — Frost wedging is a form of physical weathering that breaks down rocks through the freezing and thawing process. First, water enters the rock through cracks and pores...
Weathering – Physical, Chemical, Biological - Science Notes and …
网页2024年4月3日 — Frost weathering or freeze-thaw weathering occurs in regions with temperature fluctuations around the freezing point. Water enters cracks in rocks, freezes, and expands, exerting pressure that enlarges the cracks and eventually fragments the rock.
Frost weathering: recent advances and future directions
网页2008年5月27日 — This paper reviews frost-weathering studies in the last five years and proposes key questions to be answered. New techniques have enabled us to monitor moisture contents and crack movements in near-surface hard jointed bedrock and to evaluate seasonal rockfall activity in high mountains.
A review on freeze-thaw action and weathering of rocks
网页2020年4月1日 — Freeze-thaw (FT) weathering is one of the most important factors in deterioration of rocks and other porous geomaterials in areas where the temperature periodically fluctuates around the freezing point (e.g. Matsuoka and Murton, 2008).
5.1: Mechanical Weathering - Geosciences LibreTexts
网页2024年4月24日 — Frost wedging is the process by which water seeps into cracks in a rock, expands on freezing, and thus enlarges the cracks (Figure 5.1.3 5.1. 3). The effectiveness of frost wedging is related to the frequency of freezing and thawing. Frost wedging is most effective in a climate like Canada’s.
2.2 - Types of Weathering - Physical
网页Physical weathering is the weakening and subsequent disintegration of rock by physical forces. These physical forces include temperature fluctuation, abrasion, frost action (freezing and thawing), and salt crystal growth. Temperature fluctuation can cause expansion or contraction of rock.
5.1: Weathering - Geosciences LibreTexts
网页Frost wedging, also called ice wedging, is the process by which water seeps into cracks in a rock, expands on freezing, and thus enlarges the cracks. The effectiveness of frost wedging is related to the frequency of freezing and thawing.
Why Do Freezing Rocks Break? | Science - AAAS
网页2006年11月17日 — This current understanding casts doubt on the long-standing assumption that the 9% volumetric expansion is critical for freezing to fracture rock, and the closely associated notion that the frequency and intensity of freeze-thaw cycles are the main environmental determinants of frost weathering.
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