What serves as a natural "tape recording" of the history of the Earth's magnetic field reversals?

ocean floor
antarctic ice cap
coal deposits
Himalayas
In the 1950s scientists discovered zebra-like pattern of the ocean floor magnetic polarity. It turned out that the stripes of rock parallel to the mid-ocean ridge crest alternate in magnetic polarity (normal-reversed-normal, etc.), suggesting that they were formed during different epochs documenting the normal and reversal episodes of the Earth's magnetic field.
globalquiz.org
0
Correct this question
5
Very interesting!
reach: rather globalgeographygeologymagnetismmodern sciencesciencetectonics

Answers by country

ocean floor
antarctic ice cap
coal deposits
Himalayas
answers
flagItaly
87%
8%
2%
2%
49
flagPakistan
67%
25%
3%
0%
28
flagthe Philippines
63%
20%
6%
3%
30
flagLithuania
60%
26%
6%
6%
15
flagthe United Kingdom
54%
26%
10%
5%
227
flagthe Netherlands
54%
18%
13%
10%
37
flagCanada
50%
22%
16%
6%
48
flagGreece
50%
31%
9%
9%
32
flagUnknown
50%
29%
12%
8%
24
flagPoland
47%
25%
16%
8%
12006
flagAustralia
46%
35%
9%
5%
54
flagIndia
45%
30%
13%
8%
168
flagRepublic of Ireland
45%
29%
12%
4%
24
flagAustria
44%
30%
19%
5%
36
flagthe United States
40%
36%
12%
8%
677
flagGermany
39%
31%
22%
5%
213
flagFrance
33%
26%
26%
13%
15
flagNorway
31%
37%
18%
12%
16
flagSwitzerland
30%
39%
21%
4%
23
flagMalaysia
23%
61%
15%
0%
13