Guiana Highlands - Guiana Highlands

Japanese: ギアナ高地 - ギアナこうち（英語表記）Guiana Highlands

Meseta de Guayana in Spanish. A highland in the Guiana region of northern South America. A vast area including the entire Guiana region (Guyana, Suriname, French Guiana) excluding the Atlantic coastal lowlands, southeastern Venezuela, and northern Brazil, limited to the Amazon lowlands in the south and the Orinoco lowlands in the west and northwest. Tectonically, it is called the Guiana Shield, and its base is made of the same ancient rocks as the Brazilian highlands that extend south of the Amazon lowlands. The topography is divided into gently rolling hills below 300 m above sea level, low mountains between 600 and 900 m above sea level, and plateau-like highlands. It includes the Parima, Pacaraima, Acaray, and Tumucumaque mountain ranges, and its highest point is Mount Roraima at 2,772 m in the Pacaraima Mountains, located at the border of Venezuela, Guyana, and Brazil. The entire region is in the tropical rainforest zone, and most of the country is covered with rainforest, except for some savannas in southern Venezuela. The crystalline rocks that make up the base of the region contain various mineral resources, but development has not progressed beyond mining for gold, diamonds, iron ore, etc. Angel Falls, on the Churun River, a tributary of the Caroni River that runs through this highland, is known as the world's largest waterfall, with a drop of 979 m.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

スペイン語では Meseta de Guayana。南アメリカ北部，ギアナ地方にある高地。大西洋沿岸低地を除くギアナ三国 (ガイアナ，スリナム，フランス領ギアナ) の全域，ベネズエラ南東部，およびブラジル北部を含む広大な地域で，南はアマゾン低地，西と北西はオリノコ低地に限られる。地体構造的にはギアナ楯状地と呼ばれ，基盤はアマゾン低地の南に広がるブラジル高原と同じ古期の岩石から成り，地形はゆるやかに起伏する標高 300m以下の丘陵地，600～900mの低い山地，および台地状の高原に分けられる。パリマ，パカライマ，アカライ，トゥムクマケなどの山脈を含み，最高点はパカライマ山脈中，ベネズエラ，ガイアナ，ブラジル3国の国境が集る地点に位置するロライマ山の 2772m。全域が熱帯多雨地帯に属し，ベネズエラ南部など一部にサバナが広がるほかは，大部分が熱帯雨林におおわれる。基盤の結晶質岩石は各種の鉱物資源を含むが，金，ダイヤモンド，鉄鉱石などが採掘される以外，開発は進んでいない。この高地を流れるカロニ川の支流チュルン川にかかるエンジェル滝は，世界最大の落差 (979m) をもつ滝として知られる。

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