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  2. Plate tectonics - Wikipedia

    en.wikipedia.org/wiki/Plate_tectonics

    Plate tectonics (from Latin tectonicus, from Ancient Greek τεκτονικός (tektonikós) 'pertaining to building') [1] is the scientific theory that the Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since 3–4 billion years ago.

  3. Zhangye National Geopark - Wikipedia

    en.wikipedia.org/wiki/Zhangye_National_Geopark

    Zhangye National Geopark (simplified Chinese: 张掖国家地质公园; traditional Chinese: 張掖國家地質公園; pinyin: Zhāngyè Guójiā Dìzhìgōngyuán) is located in Sunan and Linze counties within the prefecture-level city of Zhangye, in Gansu, China.

  4. 38th parallel north - Wikipedia

    en.wikipedia.org/wiki/38th_parallel_north

    The 38th parallel north is a circle of latitude that is 38 degrees north of the Earth's equatorial plane.It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.

  5. Latitude - Wikipedia

    en.wikipedia.org/wiki/Latitude

    Two levels of abstraction are employed in the definitions of latitude and longitude. In the first step the physical surface is modeled by the geoid, a surface which approximates the mean sea level over the oceans and its continuation under the land masses.

  6. Antipodes - Wikipedia

    en.wikipedia.org/wiki/Antipodes

    In geography, the antipode (/ ˈ æ n t ɪ ˌ p oʊ d, æ n ˈ t ɪ p ə d i /) of any spot on Earth is the point on Earth's surface diametrically opposite to it. A pair of points antipodal (/ æ n ˈ t ɪ p ə d əl /) to each other are situated such that a straight line connecting the two would pass through Earth's center.

  7. Lesser Sunda Islands - Wikipedia

    en.wikipedia.org/wiki/Lesser_Sunda_Islands

    Map of Lesser Sunda Islands, east of Java Satellite picture of the Lesser Sunda Islands. The Lesser Sunda Islands (Indonesian: Kepulauan Sunda Kecil, Tetum: Illá Sunda ki'ik sirá, Balinese: ᬓᬧᬸᬮᭀᬯᬦ᭄ᬲᬸᬦ᭄ᬤᬘᬾᬦᬶᬓ᭄, romanized: Kapuloan Sunda cénik), now known as Nusa Tenggara Islands (Indonesian: Kepulauan Nusa Tenggara, or "Southeast Islands"), [1] are an ...

  8. Geological history of Earth - Wikipedia

    en.wikipedia.org/wiki/Geological_history_of_Earth

    The Precambrian includes approximately 90% of geologic time. It extends from 4.6 billion years ago to the beginning of the Cambrian Period (about 539 Ma).It includes the first three of the four eons of Earth's prehistory (the Hadean, Archean, and Proterozoic) and precedes the Phanerozoic eon.

  9. Southern Hemisphere - Wikipedia

    en.wikipedia.org/wiki/Southern_Hemisphere

    The Southern Hemisphere is the half of Earth that is south of the Equator, including parts of Africa, South America, and Australia.