Glacial Day

Glacier

A glacier is a persistent body of natural ice, a form of rock, that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It slowly flows and deforms under stresses induced by gravity, undergoing both ductile and brittle deformation, and acquiring distinguishing surface features, such as crevasses and seracs. As a glacier moves, it abrades underlying rock and debris to create glacial landforms, such as cirques, moraines, and fjords. Although a glacier may flow into a body of water, and can include ice shelves and ice tongues, it originates only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of freezing bodies of water.

Day

A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours. As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes.

glacial

Adjective

1. Of, or relating to glaciers.
2. Very slow.

Noun

1. A glacial period (colloquially known as an ice age).

day

Symbol

1. ISO 639-2 & ISO 639-5 language code for Land Dayak languages.

Noun

1. The time when the Sun is above the horizon and it lights the sky.
2. A period of time equal or almost equal to a full day-night cycle, being 24 hours long.