General Science.  The Earth’s Spheres Our planet formed 4.5 billion years ago. Since then, it has developed and modified four main physical environments that interact…

Slide 1Plate Tectonics Alfred Wegener – early 1900s proposed the concept of Continental Drift- the continents were once joined a large super continent called Pangaea –…

Slide 1Plate Tectonic Model Did you read chapter 30 before coming to class? A.Yes B.No Slide 2 So how do you move a continent? Slide 3 Slide 4 What drives plate motion? …

Slide 1 SYNTHESIS: Theory of Plate Tectonics –The new hypotheses of the early 1960s explained several puzzling sets of observations. All that remained was a synthesis of…

Slide 1 Plate Tectonics and Earth’s Interior Slide 2 Pangea Slide 3 Distribution of Late Paleozoic Fossils Slide 4 Conventional Wisdom: Animals Migrated Across Land Bridges…

Plate Boundaries Lab Warm up Dec. 10th I will learn the type of plate boundaries Homework: 6 weeks test Thursday⦠Semester exams next week schedule on board What are the…

Slide 1 Plate Tectonics and Earthquakes Objectives: Students will learn key terms associated with plate tectonic processes. (Part A) Students will understand the specific…

Tectonophysics, 139 (1987) 107-122 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands 107 Accretion of southern Alaska JOHN W. HILLHOUSE U.S. Geological…

Mineral resources in granitic settings The magmatic â hydrothermal continuum Throughout the past lectures we have again and again been preoccupied with the role of aqueous…