the quaternary system
11Quaternary (disambiguation) — Quaternary (from Latin quaternarius ) is an adjective meaning consisting of or containing four each , but sometimes (as in geology) taken to mean fourth or fourth hand , where it is used in place of quartary to continue the sequence Primary,… …
12Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… …
13The Ozarks — Ozark redirects here. For other uses, see Ozark (disambiguation). Ozark Mountain redirects here. For the wine region, see Ozark Mountain AVA. The Ozarks, Ouachitas, Black Hills, and Sawtooths …
14Geology of the Grand Canyon area — The geology of the Grand Canyon area exposes one of the most complete sequences of rock anywhere, representing a period of nearly 2 billion years of the Earth s history in that part of North America. The major sedimentary rock layers exposed in… …
15Geology of the Grand Teton area — The geology of the Grand Teton area consists of some of the oldest rocks and one of the youngest mountain ranges in North America. The Teton Range, mostly located in Grand Teton National Park, started to grow some 9 million years ago. An older… …
16Geography of the United Kingdom — The United Kingdom of Great Britain and Northern Ireland, or UK, is in Western Europe. It comprises the island of Great Britain (England, Scotland and Wales) and the northeastern one sixth of the island of Ireland (Northern Ireland), together… …
17Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies …
18Baetic System — Range Mulhacén in the winter Cou …
19History of the rupee — India has been one of the earliest issuers of coins in the world (circa 6th Century BC), along with the Chinese wen and Lydian staters. The origin of the word rupee is found in the word rūp or rūpā , which means silver in many Indo Aryan… …
20Tertiary sector of the economy — Economic sectors Three sector hypothesis Primary sector: raw materials Secondary sector: manuf …
