EESA06H3 Lecture Notes - Lecture 10: The Maritimes, Mount Rundle, Eurasia
Document Summary
Lecture 10 canada"s geologic journey: the last 4 billion years. Exam"s dominant theme 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 north america: brown area: pangea assembly (350 ma): maritime. Mountains: blue right area: pangea breakup ( < 200 ma): british columbia is added during. Cordilleran orogeny (e. g. rockies: from alaska to mexico on the left) derive from igneous rocks released into water. sedimentary rock metamorphosed into a gneiss used for uranium, lead age dating 2. 7 billion years old very small put into a mass spectrometer to look at how much lead is in the crystal. detrital detritus: derived from something else. oldest rocks in the centre embedded in the interior of.
