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The Geology of Jamaica is formed of rocks of Cretaceous to Neogene age. The basement consists of Cretaceous island arc and back-arc basin sequences that formed above a subduction zone. The cover is of mainly Eocene to Miocene shallow water limestones, that have been uplifted due to the presence of a restraining bend along the major strike-slip ...
Jamaica lies 140 km (87 mi) south of Cuba and 190 km (118 mi) west of Haiti. At its greatest extent, Jamaica is 235 km (146 mi) long, and its width varies between 34 and 84 km (21 and 52 mi). [1] Jamaica has a small area of 10,992 km 2 (4,244 sq mi). [1] However, Jamaica is the largest island of the Commonwealth Caribbean and the third largest ...
Silver mining in the United States began on a major scale with the discovery of the Comstock Lode in Nevada in 1858. The industry suffered greatly from the demonetization of silver in 1873 by the Coinage Act of 1873, known pejoratively as the "Crime of 73", but silver mining continues today. United States mines produced 1,170 tons of silver in ...
Charles Alfred Matley (1866–1947) was a British paleontologist and geologist in India, the British West Indies and Wales. Matley was educated at Birmingham University , and earned a doctorate in geology (D.Sc.) from the University of London in July 1902.
James Gay Sawkins (1806–July 20, 1878) was an artist, geologist, copper miner, and illustrator. He was a member of the Geological Society of London who joined and led research during England's West Indian Geological Surveys of the islands of Trinidad and Jamaica. [1] [2] [3] He also worked in the mining industries of Jamaica, Peru, Hawaii ...
The California Geological Survey has had many names over its history. The original Geological Survey of California was replaced in April 1880 by the new California State Mining Bureau. This was renamed the Division of Mines in 1927. In 1962 the division's name was expanded to be California Division of Mines and Geology, a name that lasted until ...
Source: USGS. The Carlin Unconformity or Carlin Trend is a geologic feature in northeastern Nevada which represents a period of erosion or non-deposition likely associated with a collision between a tectonic crustal block called a terrane and the North American Plate. The collision occurred during the Mississippian Period, about 350 million ...
Portmore, Saint Catherine. / 17.9499936; -76.879921. Portmore ( Jamaican Creole: Puotmuor) is a large urban settlement located along the southeastern coast of Jamaica in Saint Catherine, and a dormitory community for Kingston and Spanish Town, which neighbour it.