Climate and Surface Processes

0.0(0)
studied byStudied by 0 people
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/5

flashcard set

Earn XP

Description and Tags

- Recognize how changes in temperature, moisture, and vegetation throughout Earth's history produce diagnostic landscape features - Explain how chemical weathering regulates global climate - Articulate how a space-for-time substitution can (or cannot!) reveal the impact of climate change on landscapes

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

6 Terms

1
New cards

How chemical weathering affects climate

Regulates atmospheric and terrestrial carbon pools

2
New cards

Calcium Silicate Weathering —> Biomineralization

CO2, Water, and Calcium Silicate turned to bicarbonate, calcium ions, and silica

The bicarbonate and calcium is then turned into calcium carbonate in the shells of animals, which is then STORED AS A SINK

SILICATE WEATHERING IS A CARBON SINK

<p>CO2, Water, and Calcium Silicate turned to bicarbonate, calcium ions, and silica</p><p>The bicarbonate and calcium is then turned into calcium carbonate <strong>in the shells of animals, which is then STORED AS A SINK</strong></p><p></p><p>SILICATE WEATHERING IS A CARBON SINK</p>
3
New cards

Chemical weathering carbon neutral, sink, or source

Carbonate weathering —> Neutral

Aformentioned Silicate Weathering —> Sink

Carbonate rocks cooked in lithosphere —> Source

  • Ex. Volcanic eruptions releasing carbon

4
New cards

Idea regarding carbonate weathering and global climate effects

As it gets warmer, more weathering occurs of calcium silicate minerals, ultimately resulting in the biomineralization and storage of CO2, cooling global climate

  • Need to understand degree of weathering and erosion under warm/wet climates

<p><strong>As it gets warmer, more weathering occurs of calcium silicate minerals, ultimately resulting in the biomineralization and storage of CO2, cooling global climate</strong></p><ul><li><p><em>Need to understand degree of weathering and erosion under warm/wet climates</em></p></li></ul><p></p>
5
New cards

Diagnostic Landform Examples

Moraines, Eskers, Drumlins, etc. — Presence of glaciers and colder climate; ELA with moraines

Pingos — Evidence of permafrost presence

Large outwash canyons from glacial outburst floods

Fjords with glacial carving

Ideally study landforms representative of a snapshot of climate; or a single relatively constant period of climate

6
New cards

Space-for-Time Substitution

Using landforms from different stages of development or similar landforms under different environmental conditions to determine how certain climate processes act on landforms

  • Ex. Using modern climate gradients to ascertain how climate (precipitation and temperature) is linked to erosion and chemical weathering of landforms

  • However, for past climate, limits extent of use due to it being much colder 20K years ago for example