Figures/workshop brainscape Flashcards
What are the numbers?
1: younger dryas
2: Bolling Allerod
3: Antartic cold reversal
4. Heinrich stadial
What events are at each number?
Where would the following deposites be?
- Desert deposits (use an hatched area)
- Carbonate/Reefs deposits (use the letter R)
- Glacier-related deposit (use the letter I)
- Evaporites (use the letter G)
Where would warm and cold water currents forme in this image?
cold water=black lin
warm water red line
Where would the following deposites be?
- Desert deposits (use an hatched area)
- Carbonate/Reefs deposits (use the letter R)
- Glacier-related deposit (use the letter I)
- Evaporites (use the letter G)
Where would warm and cold water currents forme in this image?
cold water=black lin
warm water red line
Fill in the gaps in the hadean timeline
Fill in the gaps in the hadean timeline
What happened at 2.1Ga?
The negative C isotope excursions are mainly observed in shallow marine basins. The likely reason is the partial oxidation of shallow water and less use of methane (CH4) by bacteria (aerobic)
describe the blank spaces in diagram explianing ocean spreading?
What is the Spreading rate (BLAG) hypothesis?
Rate of sea floor spreading controls atmospheric CO2
What is the gateway hypotheisis?
• Closure of Tethys
Closure of warm equatorial current (cooling)
• Opening of Drake 25-20 Ma
Isolation of Antarctica from warm currents
Icehouse Earth?
What doe the numbers correspond to?
What doe the numbers correspond to?
What do the numbers correspond to?
