5 Written Questions
5 Matching Questions
- pingualuit crater
- how many crater sites in canada
- positive anomaly
- manicouagan crater
- a 25/160 because of our large terrority and craters are preserved.
- b crater d75km but originally was 100km, flooding revealed crater, associated with minerals.
- c lies entirely within the original limits of the sudbury crater, much younger, under lake.
- d surronding tundra very flat, raised rim, simple crater (d3km, rim 160m above surface, 250m deep). impactor (d100-150m, v25km/s), no meteorites, rich in iridium, deepest fresh water source in the world
- e region denser than the surronding material.
5 Multiple Choice Questions
- conical fragment of host rock fractured by the shock wave generated by the impact; striations radiating from the apex.
- impactor (stony, d150m, v20km/s), crater depressed and filled with 2 kidney filled lakes, simple crater (d3km, 60m deep)
- steep-sided/closed, rim rocks are titled away from center, shattered rocks on the crater floor, huge blocks of rock are scattered on floor, meteorite fragments, minerals, shatter cones
- d>5km, collapsed rim, central uplift, no meteorites.
- double impact site; impactors were a binary pair bound by gravity (d32km and 22km)
5 True/False Questions
simple craters → d>5km, collapsed rim, central uplift, no meteorites.
gravimeter → lies entirely within the original limits of the sudbury crater, much younger, under lake.
sudbury crater → largest/oldest in canada, heavily deformed by tectonic movements, 50km, site of nickel/copper/platinum deposits
impact craters size → dx20 = impact d
charlevoix crater → semi-circular area on the north shore of the st. lawerence river, shatter cones, associated with earthquake activity.