Americas II Americas II AMERICAS-II is a fiber optic submarine communications cable that carries telecommunications between Florida, the U.S. Virgin Islands, Puerto Rico, Martinique, Curaçao, Trinidad, Venezuela, French Guiana, Suriname and Guyana (both through Cayenne), and Brazil. It has been in service since August 2000 and is operated on a common carrier basis. AMERICAS-II consists of three interconnected rings (North, South, and West Systems), each operating at 2.5 gigabits per second ( Gbit/s), initially in separate collapsed ring configurations, and a dedicated link between Curaçao and Venezuela not operating in a collapsed ring configuration. Each fiber pair in each of the three
Geology of French Guiana the Paramaca series, which corresponds to a series of micaschists, aluminous paragneisses and black quartzites whose total thickness is about 1 km. The central granite massifs consist of granite plutons, granodiorites and quartz diorites dating from 2.05 to 2.15 billion years ago. The north of French Guiana corresponds to a synclinorium composed of the Paramaca series on which sandstone and fluviatile conglomerates lie unconformably. Shield rocks in Guyana are all dated between 1.6 and 2.5 billion years ago. The Quaternary lands are located in the northern part of Guyana, near the coast, unconformably on the Paleozoic lands. The coastal plains