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Isla Del Sol
Isla del Sol (''Island of the Sun'') is an island in the southern part of Lake Titicaca. It is part of Bolivia, and specifically part of the La Paz Department (Bolivia), La Paz Department. Geographically, the terrain is harsh; it is a rocky, hilly island with many eucalyptus trees. There are no motor vehicles or paved roads on the island. The main economic activity of the approximately 800 families on the island is farming, with fishing and tourism augmenting the subsistence economy. Of the several villages, Yumani and Challapampa are the largest. There are over 80 ruins on the island. Most of these date to the Inca period circa the 15th century AD. Archaeologists have discovered evidence that people lived on the island as far back as the third millennium BC. Many hills on the island contain agricultural terraces, which adapt steep and rocky terrain to agriculture. Among the ruins on the island are Titi Qala (Aymara language, Aymara ''titi'' Andean mountain cat; lead, lead-colored, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernabé Cobo
Padre Bernabé Cobo (born at Lopera in Spain, 1582; died at Lima, Peru, 9 October 1657) was a Spanish Jesuit missionary and writer. He played a part in the early history of quinine by his description of cinchona bark; he brought some to Europe on a visit in 1632. He was a thorough student of nature and man in Spanish America. His long residence (61 years), his position as a priest and, several times, as a missionary, gave him unusual opportunities for obtaining reliable information. The Spanish botanist Cavanilles gave the name of ''Cobaea'' to a genus of plants belonging to the Polemoniaceae of Mexico, '' Cobaea scandens'' being its most striking representative. Life He went to America in 1596, visiting the Antilles and Venezuela and landing at Lima in 1599. Entering the Society of Jesus, 14 October 1601, he was sent by his superiors in 1615 to the mission of Juli, where, and at Potosí, Cochabamba, Oruro, and La Paz, he laboured until 1618. He was rector of the college of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilha Do Sol11 , an island and populated place of the coast of mainland Mozambique
{{geodis ...
Ilha (Portuguese for "island") may refer to the following places in Portugal or Mozambique: *Ilha (Santana), a parish in the municipality of Santana, Madeira *Ilha (Pombal), a former parish in the municipality of Pombal *Island of Mozambique The Island of Mozambique ( pt, Ilha de Moçambique) lies off northern Mozambique, between the Mozambique Channel and Mossuril Bay, and is part of Nampula Province. Prior to 1898, it was the capital of colonial Portuguese East Africa. With its ric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleoclimate
Paleoclimatology (British spelling, palaeoclimatology) is the study of climates for which direct measurements were not taken. As instrumental records only span a tiny part of Earth's history, the reconstruction of ancient climate is important to understand natural variation and the evolution of the current climate. Paleoclimatology uses a variety of proxy methods from Earth and life sciences to obtain data previously preserved within rocks, sediments, boreholes, ice sheets, tree rings, corals, shells, and microfossils. Combined with techniques to date the proxies, the paleoclimate records are used to determine the past states of Earth's atmosphere. The scientific field of paleoclimatology came to maturity in the 20th century. Notable periods studied by paleoclimatologists are the frequent glaciations that Earth has undergone, rapid cooling events like the Younger Dryas, and the rapid warming during the Paleocene–Eocene Thermal Maximum. Studies of past changes in the environm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymetric
Bathymetry (; ) is the study of underwater depth of ocean floors (''seabed topography''), lake floors, or river floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography. The first recorded evidence of water depth measurements are from Ancient Egypt over 3000 years ago. Bathymetric (or hydrographic) charts are typically produced to support safety of surface or sub-surface navigation, and usually show seafloor relief or terrain as contour lines (called depth contours or isobaths) and selected depths ('' soundings''), and typically also provide surface navigational information. Bathymetric maps (a more general term where navigational safety is not a concern) may also use a Digital Terrain Model and artificial illumination techniques to illustrate the depths being portrayed. The global bathymetry is sometimes combined with topography data to yield a global relief model. Paleobathymetry is the study of past underwater depths. Seabed topography ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jisk'a Iru Muqu
Jisk'a Iru Muqu (Aymara, ''jisk'a'' small, ''iru'' a type of grass, ''(Festuca orthophylla)'', ''muqu'' knot; joint of a part of the reed, also spelled ''Jiskairumoko, Jisk'airumoko'') is a pre-Columbian archaeological site south-east of Puno, Peru. The site lies in the mountains at elevation 4,115 meters (13,500 feet), in the Aymara community of Jachacachi, adjacent to the Ilave River drainage, of the Lake Titicaca Basin, Peru. Occupation of Jisk'a Iru Muqu spans from the Late Archaic to the Formative. Research The site was first formally recorded by Mark Aldenderfer in 1994, during a pedestrian survey of the Ilave River. The first excavations at the site were conducted in 1995.Aldenderfer and de la Vega (1996) Jisk'a Iru Muqu is the first Archaic open-air site excavated in the Lake Titicaca Basin. Under the direction of Aldenderfer, a team from University of California, Santa Barbara, including Nathan Craig and Nicholas Tripcevich, conducted additional excavati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chivay Obsidian Source
The Chivay obsidian source (15.6423° S, 71.5355° W, 4972 masl) is the geological origin of a chemical group of obsidian that is found throughout the south-central Andean highlands including southern Peru and western Bolivia. Chemical characterization studies using X-ray fluorescence (XRF) and Neutron Activation Analysis (NAA) have shown that the Chivay obsidian source, also known as the Cotallalli type or the Titicaca Basin type, makes up over 90% of the obsidian artifacts analyzed from the Lake Titicaca Basin. Obsidian from the Chivay source is found in large and homogeneous nodules in a high altitude volcanic depression approximately ten km to the east of the town of Chivay in the Colca Canyon, Colca Valley (Caylloma, Arequipa, Peru).http://mapaspects.org/tripcevich-papers-presentations/tripcevich-phd-dissertation Consumption sites Obsidian from the Chivay source has been chemically identified among artifacts from over fifty sites in the south-central Andes. Chivay obsidia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Activation Analysis
Neutron activation analysis (NAA) is the nuclear process used for determining the concentrations of elements in many materials. NAA allows discrete sampling of elements as it disregards the chemical form of a sample, and focuses solely on atomic nuclei. The method is based on neutron activation and thus requires a source of neutrons. The sample is bombarded with neutrons, causing its constituent elements to form radioactive isotopes. The radioactive emissions and radioactive decay paths for each element have long been studied and determined. Using this information, it is possible to study spectra of the emissions of the radioactive sample, and determine the concentrations of the various elements within it. A particular advantage of this technique is that it does not destroy the sample, and thus has been used for the analysis of works of art and historical artifacts. NAA can also be used to determine the activity of a radioactive sample. If NAA is conducted directly on irradiat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obsidian
Obsidian () is a naturally occurring volcanic glass formed when lava extrusive rock, extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. Obsidian is produced from felsic lava, rich in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. It is commonly found within the margins of rhyolite, rhyolitic lava flows known as obsidian flows. These flows have a high content of silicon dioxide, silica, granting them a high viscosity. The high viscosity inhibits atomic diffusion, diffusion of atoms through the lava, which inhibits the first step (nucleation) in the formation of mineral crystals. Together with rapid cooling, this results in a natural glass forming from the lava. Obsidian is hard, Brittleness, brittle, and amorphous; it therefore Fracture (mineralogy)#Conchoidal fracture, fractures with sharp edges. In the past, it was used to manufacture cutting and piercing tools, and it has been used experimentally as surgic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiocarbon
Carbon-14, C-14, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples. Carbon-14 was discovered on February 27, 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, California. Its existence had been suggested by Franz Kurie in 1934. There are three naturally occurring isotopes of carbon on Earth: carbon-12 (), which makes up 99% of all carbon on Earth; carbon-13 (), which makes up 1%; and carbon-14 (), which occurs in trace amounts, making up about 1 or 1.5 atoms per 1012 atoms of carbon in the atmosphere. Carbon-12 and carbon-13 are both stable, while carbon-14 is unstable and has a half-life of 5,730 ± 40 years. Carbon-14 decays into nitrogen-14 () through beta decay. A gram of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stairs And Fountain, Isla Del Sol
Stairs are a structure designed to bridge a large vertical distance between lower and higher levels by dividing it into smaller vertical distances. This is achieved as a diagonal series of horizontal platforms called steps which enable passage to the other level by stepping from one to another step in turn. Steps are very typically rectangular. Stairs may be straight, round, or may consist of two or more straight pieces connected at angles. Types of stairs include staircases (also called stairways), ladders, and escalators. Some alternatives to stairs are elevators (also called lifts), stairlifts, inclined moving walkways, and ramps. A stairwell is a vertical shaft or opening that contains a staircase. A flight (of stairs) is an inclined part of a staircase consisting of steps (and their lateral supports if supports are separate from steps). Components and terms A ''stair'', or a ''stairstep'', is one step in a flight of stairs.R.E. Putnam and G.E. Carlson, ''Architectural an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
