Question

last name: __ first name: period: __
geologic name | draw arrows | type of crust | type of boundary | name of plates involved | geologic features
a | marianas trench | arrows | ocean & ocean | convergent | eurasian & pacific | trench/subduction
b | san andreas fault | arrows | | | |
c | andes mountains | arrows | | | |
d | himalayan mountains | arrows | | | |
e | mid atlantic ridge | arrows | | | |
f | pacific/antarctic ridge | arrows | | | |
g | alpine fault | arrows | | | |
h | aleutian islands | arrows | | | |
i | alps | arrows | | | |
j | mt. saint helens | arrows | | | |

Answer:

To solve this geologic features table, we analyze each row for the given geologic name (e.g., Mariana Trench, San Andreas Fault, etc.) and fill in the corresponding columns (Type of crust, Type of boundary, Name of plates involved, Geologic features) based on plate tectonics knowledge:

Column: Type of crust

• Mariana Trench (A): Ocean & Ocean (oceanic - oceanic convergence).
• San Andreas Fault (B): Continental & Continental (transform boundary, North American & Pacific plates).
• Andes Mountains (C): Ocean & Continental (Nazca & South American plates, subduction).
• Himalayan Mountains (D): Continental & Continental (Indian & Eurasian plates, collision).
• Mid - Atlantic Ridge (E): Ocean & Ocean (divergent, Eurasian & North American plates).
• Pacific/Antarctic Ridge (F): Ocean & Ocean (divergent, Pacific & Antarctic plates).
• Alpine Fault (G): Continental & Continental (transform, Australian & Pacific plates).
• Aleutian Islands (H): Ocean & Continental (Pacific & North American plates, subduction).
• Alps (I): Continental & Continental (African & Eurasian plates, collision).
• Mt. Saint Helens (J): Ocean & Continental (Juan de Fuca & North American plates, subduction).

Column: Type of boundary

• Mariana Trench (A): Convergent (oceanic subduction).
• San Andreas Fault (B): Transform (lateral sliding).
• Andes Mountains (C): Convergent (oceanic - continental subduction).
• Himalayan Mountains (D): Convergent (continental collision).
• Mid - Atlantic Ridge (E): Divergent (seafloor spreading).
• Pacific/Antarctic Ridge (F): Divergent (seafloor spreading).
• Alpine Fault (G): Transform (lateral sliding).
• Aleutian Islands (H): Convergent (oceanic - continental subduction).
• Alps (I): Convergent (continental collision).
• Mt. Saint Helens (J): Convergent (oceanic - continental subduction).

Column: Name of plates involved

• Mariana Trench (A): Eurasian & Pacific.
• San Andreas Fault (B): North American & Pacific.
• Andes Mountains (C): Nazca & South American.
• Himalayan Mountains (D): Indian & Eurasian.
• Mid - Atlantic Ridge (E): Eurasian & North American.
• Pacific/Antarctic Ridge (F): Pacific & Antarctic.
• Alpine Fault (G): Australian & Pacific.
• Aleutian Islands (H): Pacific & North American.
• Alps (I): African & Eurasian.
• Mt. Saint Helens (J): Juan de Fuca & North American.

Column: Geologic features

• Mariana Trench (A): Trench/Subduction (deep ocean trench from subduction).
• San Andreas Fault (B): Fault (transform fault, earthquake zone).
• Andes Mountains (C): Mountains/Volcanoes (volcanic arc from subduction).
• Himalayan Mountains (D): Mountains (collision - formed mountain range).
• Mid - Atlantic Ridge (E): Ridge/Seafloor Spreading (divergent boundary, new crust formed).
• Pacific/Antarctic Ridge (F): Ridge/Seafloor Spreading (divergent boundary, new crust formed).
• Alpine Fault (G): Fault (transform fault, earthquake zone).
• Aleutian Islands (H): Islands/Volcanoes (volcanic island arc from subduction).
• Alps (I): Mountains (collision - formed mountain range).
• Mt. Saint Helens (J): Volcano (stratovolcano from subduction).

Example (Row A: Mariana Trench)

• Type of crust: Ocean & Ocean
• Type of boundary: Convergent
• Name of plates involved: Eurasian & Pacific
• Geologic features: Trench/Subduction

This follows plate tectonics principles (convergent, divergent, transform boundaries; oceanic vs. continental crust interactions) to determine each column’s value.