5. Mauna Kea
Estimated Age: ≈1 million years old
Location: 19.82°N, 155.47°W
Highest Volcano in Hawai’i – 13,796
Pu’u Wekiu
Tallest Mountain in the World
Size – 22.8% of Hawai’i
Latest eruption≈3,500 years ago
Dormant, but not extinct
Lava: Primarily Tholeiitic Basalt
6. Post Shield
Classification of Post Shield-Building
Stage
Low eruption rates
Absence of summit caldera
Steep and irregular topography
Different chemical composition of
lava
7. Post Shield
Transition from Shield Stage about
200,000-250,000 years ago
Rock type in cap
70% Hawaiite
25% Alkalic Basalt
5% Ankaramite
12. White Mountain
Only Hawaiian volcano known to be
glaciated
Three glacial episodes since
≈150,000-200,000 years ago
Last Ice
Age formed
Lake Waiau
26. Ski Hawaii
Ski Hawaii
Ski Club
Who should not
travel to the summit
Important needs
Acclimation and
altitude sickness
Climate
Mauna Kea Weather Center