Formation
The foundations for both terraces were formed from alternate layers of volcanic fallout over a long period of time. The volcanic debris layers, alternating between rhyolitic and sedimentary stone, formed the base for precipitation of silica.
The precipitation formed many pools and steps over time. Precipitation occurred by two methods. The ascending foundation over time formed a lip which would trap the descending flow and become level again. This process formed attractive swimming places, both for the shape and for the warm water. When the thermal layers sloped in the other direction away from the geyser, then silica steps formed on the surface. Both types of formation grew as silica-laden water cascaded over them, and the water also enhanced the spectacle. Geologist Ferdinand von Hochstetter wrote after his visit in 1859 that "doubtless thousands of years were required" for their formation.
The White Terraces were the larger formation, covering 3 hectares and descending over approximately 50 layers and a drop in height of 40 metres. The Pink Terraces descended 30 metres over a distance of 75 metres. The converging Pink Terraces started at the top with a width of 75–100 metres and the bottom layers were approximately 27 metres wide. The Pink Terraces were where people preferred to bathe due to the more suitable pools.
Read more about this topic: Pink And White Terraces
Famous quotes containing the word formation:
“The formation of an oppositional world view is necessary for feminist struggle. This means that the world we have most intimately known, the world in which we feel “safe” ... must be radically changed. Perhaps it is the knowledge that everyone must change, not just those we label enemies or oppressors, that has so far served to check our revolutionary impulses.”
—Bell (c. 1955)
“The moral virtues, then, are produced in us neither by nature nor against nature. Nature, indeed, prepares in us the ground for their reception, but their complete formation is the product of habit.”
—Aristotle (384–322 B.C.)
“I want you to consider this distinction as you go forward in life. Being male is not enough; being a man is a right to be earned and an honor to be cherished. I cannot tell you how to earn that right or deserve that honor. . . but I can tell you that the formation of your manhood must be a conscious act governed by the highest vision of the man you want to be.”
—Kent Nerburn (20th century)