|
Tertiary (other)
The Tertiary is a geologic period. Tertiary (from Latin, meaning 'third' or 'of the third degree/order..') may also refer to: * Tertiary (chemistry), a term describing bonding patterns in organic chemistry * In biochemistry, the tertiary structure of a protein is its overall shape, also known as its fold * Tertiary consumer, in ecology * Tertiary feathers or tertials, feathers attached to humerus or inner portion of the wings of birds * Tertiary color, a color made up by mixing one primary color with one secondary color, in a given color space * Tertiary sector of the economy, or the service sector * Tertiary education, educational levels following the completion of secondary education such as university or trade school * Tertiary care, specialized consultative healthcare * Tertiary, a member of a third order religious group * Tertiary source, in research * Tertiary stress, a proposed level of stress in phonetics See also * Ternary (other) * Secondary (disambiguatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tertiary
Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start of the Cenozoic Era, and extended to the beginning of the Quaternary glaciation at the end of the Pliocene Epoch. The time span covered by the Tertiary has no exact equivalent in the current geologic time system, but it is essentially the merged Paleogene and Neogene periods, which are informally called the Early Tertiary and the Late Tertiary, respectively. The Tertiary established the Antarctic as an icy island continent. Historical use of the term The term Tertiary was first used by Giovanni Arduino during the mid-18th century. He classified geologic time into primitive (or primary), secondary, and tertiary periods based on observations of geology in Northern Italy. Later a fourth period, the Quaternary, was applied. In the early d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |