GPHY 102 Lecture Notes - Lecture 14: Stratovolcano, Magma Chamber, Silicate Minerals

• School: Queen's University
• Department: Geography
• Course: GPHY 102
• Professor: Ryan K Danby

Document Summary

Landforms: shapes of the land surface taking distinctive forms and produced by natural processes. Geomorphology: scientific study of earth surface processes and landforms include their history and process of origin. Initial/primary: directly produced by volcanic and tectonic activity, sequential/secondary, shaped by processes of and agents of denudation (processes that cause the wearing away of the. Earth"s surface by moving water, ice, wind and waves, leading to a reduction in elevation and relief of landforms and landscapes: erosion and depositions are important. A volcano is a conical or dome-shaped initial landforms built of lava and ash emitted from a vent in earth"s crust. Volcanoes can be: active: erupted in recorded history, dormant: not seen to erupt but evidence suggests recent activity, extinct: no sign of activity, evidence of long-term weathering and erosion. Oceanic vs continental crust: oceanic: mafic rocks (rich in magnesium and iron; denser, continental crust: upper portion is primarily felsic rocks (rick in silicate minerals; less dense)