Earlier this week, the Manaakitanga Syndicate visited Mangere Mountain as part of our Inquiry topic focused on Volcanoes. We had an eventful day which consisted of a walk up the mountain, an outline of the history of the mountain and the tribe that occupied it hundreds of years ago, as well as a hands-on workshop on traditional harakeke weaving.
By Gregory Ah-Kuoi
After a heartfelt welcoming by a direct descendant of the tribe who once lived up the mountain and a refreshing stop for Morning Tea, Room 22 and 18 prepared to leave the Education Centre and embark on our trip up Mangere Mountain. First, we stopped as our guide Pauline, (who is also one of the direct descendants of the Maori people who lived on the mountain hundreds of years ago), told us about the different phases of a Volcanic eruption. The first phase: trembling and shaking, where the tectonic plates are unbalanced and are either pushing together or being forced apart- which creates the trembling and shaking sensation earths occupants feel right before an eruption. The second phase is fire fountaining, which is the process where magma travels upwards, causing pressure to make the cone shaped base. Finally the third phase, where the magma comes out of the craters and turns into lava, causing the well known explosion. Then, she explained to us what comes out of these phases. In phase 2, a rock known as scoria explodes from the crater. In the rock, there are hundred of holes that contain gases, and in historic times, this rock was used as a cooking tool, to heat their food.
Te Pane o Mataoho
By Leaony MacDonald
During the beginning of our journey up Te Pane o Mataoho, Pauline explained to us the different phases of a volcano eruption, and what causes the eruption. Under the earth there are tectonic plates, sometimes these tectonic plate get pushed together too hard or forced apart, this pushing together and a part causes phase 1- the trembling and shaking. We continued our walk until we stopped to look a bit closer at five rocks lying on the ground. They looked ordinary but we soon found out they were more special than we thought. We were told that these rocks were actually lava bombs, and that they had come out during the second phase of fire fountaining. These rocks are called, ribbon, spindle, cow pat, lens, and bread crumb.
She also explained that after phase 2 has ended (fire fountaining), the volcano enters phase 3 which is the flowing out of lava. The lava flow comes out 2 vents. The main vent and the secondary vent that produces lava from the sides. The main vent is the middle part of the volcano, which lets out most of the burning lava.