Magnetostratigraphy is a chronostratigraphic technique used to date sedimentary and volcanic sequences.
2.
There are two main volcanic sequences on the Belcher Islands called the Eskimo and overlying Flaherty volcanics.
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The presence of pillow lavas in the oldest preserved volcanic sequences on the planet, the metamorphic belts.
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Some include sedimentary or rift-volcanic sequences that have been interpreted as passive margins prior to metamorphism.
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They are a real part of the history of the magma itself and constitute the terminal phases of the volcanic sequence.
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It is situated in the western portion of the Uchi Subprovince, a volcanic sequence comprising a number of greenstone belts.
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The sedimentary thickness of the Cudappa basin is of the order of with volcanic sequences in the form of Archaean peninsular gneissic complex is noted.
8.
The most intense alteration ( containing the stringer sulfide zone ) is generally located directly underneath the greatest concentration of massive sulfides, within the footwall volcanic sequence.
9.
This forms the basis of magnetostratigraphy, a geophysical correlation technique that can be used to date both sedimentary and volcanic sequences as well as the seafloor magnetic anomalies.
10.
Tricouni Southeast, another volcanic sequence south of Tricouni Peak, consists of at least four andesite or dacite lava flows that outcrop as several small cliffs and bluffs on extensively vegetated flanks.
