EESA06H3 Lecture Notes - Lecture 10: The Maritimes, Pangea Corporation, Eurasia
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kzkll k plate tectonics: continents grow through time by obduction, north american continent shows 5 growth stages, arctica (2. 7 ga gigaannum, columbia (1. 8 ga, rodina (1. 0 ga) Part of human life a + b + c = canadian shield (the craton core of. Derive from igneous rocks released into water. Used for uranium, lead age dating 2. 7 billion years old. Put into a mass spectrometer to look at how much lead is in the crystal very small. Detrital detritus: derived from something else eroded. Oldest rocks in the centre j embedded in the interior of continents. Begins to get younger as the land disperses www. notesolution. com. Deconstructing north america: province j identify rocks that extend over very large areas (similar in appearance) S can walk from one to the other. S separated by the orogen: orogen j the rocks that result from orogeny (activity)