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Las Bocas
Las Bocas is a minor archaeological site in the Mexican state of Puebla, whose name has become attached, often erroneously, to a wide-ranging type of Olmec-style figurines and pottery. The Las Bocas site, part of the Balsas River basin, was heavily plundered in the 1960s by looters looking for "Olmec" pottery and figurines. As the prestige associated with "Las Bocas" artifacts grew, that label was given to many similar artifacts – and occasional forgeries – of unknown origin. The high numbers of artifacts attributed to the site are "implausible at best", and as a result, the term "Las Bocas" has now little archaeological significance. The first systematic archaeological investigation of Las Bocas was begun by David Grove in 1967. In 1997, the archaeologist Maria de la Cruz Paillés Hernández started the first of her three seasons at the site. Field Seasons: 1997–2000 Funding The first field season of Maria de la Cruz Paillés Hernández, in 1997, was funded that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instituto Nacional De Antropología E Historia
The Instituto Nacional de Antropología e Historia (INAH, ''National Institute of Anthropology and History'') is a Federal government of the United Mexican States, Mexican federal government bureau established in 1939 to guarantee the research, preservation, protection, and promotion of the prehistoric, Archaeology, archaeological, Anthropology, anthropological, History, historical, and Paleontology, paleontological heritage of Mexico. Its creation has played a key role in preserving the Culture of Mexico, Mexican cultural heritage. Its current national headquarters are housed in the Palace of the Marqués del Apartado. INAH and the Instituto Nacional de Bellas Artes y Literatura (INBAL) are tasked with cataloging and protecting monuments and buildings regarded as cultural patrimony. INAH is entrusted with 'archaeological' (pre-Hispanic and paleontological) and 'historical' (post-Conquest 16th to 19th centuries) structures, zones and remnants, while INBAL is entrusted with 'ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silex
Separation of isotopes by laser excitation (SILEX) is a process for enriching uranium to fuel nuclear reactors that may also present a growing nuclear weapons proliferation risk. It is strongly suspected that SILEX utilizes laser condensation repression to excite a vibrational mode of the uranium-235 isotope in uranium hexaflouride (UF6), allowing this lighter molecule to move more rapidly to the outer rim of a gaseous jet and resist condensing compared to the heavier, unexcited 238UF6. This differs greatly from previous methods of laser enrichment explored for their commercial prospects: one using atomic uranium (Atomic Vapor Laser Isotope Separation (AVLIS)) and another molecular method that uses lasers to dissociate a fluorine atom from 235UF6 (Molecular Laser Isotope Separation (MLIS)), allowing the enriched product to precipitate out as a solid. While the Australian company Silex Systems Limited is the most prominent developer of this technology (as part of the Global Laser En ... [...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. Produced from felsic lava, obsidian is 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, giving them a high viscosity. The high viscosity inhibits the 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 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formative Stage
Several chronologies in the archaeology of the Americas include a Formative Period or Formative stage etc. It is often sub-divided, for example into "Early", "Middle" and "Late" stages. The Formative is the third of five stages defined by Gordon Willey and Philip Phillips in their 1958 book ''Method and Theory in American Archaeology''. Cultures of the Formative Stage are supposed to possess the technologies of pottery, weaving, and developed food production; normally they are very largely reliant on agriculture. Social organization is supposed to involve permanent towns and villages, as well as the first ceremonial centers. Ideologically, an early priestly class or theocracy is often present or in development. Sometimes also referred to as the "Pre-Classic stage", it followed the Archaic stage and was superseded by the Classic stage. # The Lithic stage # The Archaic stage # The Formative stage # The Classic stage # The Post-Classic stage The dates, and the characteristi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Post-Classic Stage
In the classification of the archaeology of the Americas, the Post-Classic stage is a term applied to some Pre-Columbian era, pre-Columbian cultures, typically ending with local contact with Europeans. This stage is the fifth of five Archaeology, archaeological stages posited by Gordon Willey and Philip Phillips (archaeologist), Philip Phillips' 1958 book ''Method and Theory in American Archaeology''. # The Lithic stage # The Archaic period (North America), Archaic stage # The Formative stage # The Classic stage # The Post-Classic stage Cultures of the Post-Classic Stage are defined distinctly by possessing developed metallurgy. Social organization is supposed to involve complex urbanism and militarism. Ideologically, Post-Classic cultures are described as showing a tendency towards the secularization of society. Mesoamerican chronology#Postclassic Era, Post-classic Mesoamerica runs from about 900 to 1519 AD, and includes the following cultures: Aztec, Tarascan state, Tarascans, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classic Stage
In archaeological cultures of North America, the classic stage is the theoretical North and Meso-American societies that existed between AD 500 and 1200. This stage is the fourth of five stages posited by Gordon Willey and Philip Phillips' 1958 book ''Method and Theory in American Archaeology''. Cultures of the Classic Stage are supposed to possess craft specialization and the beginnings of metallurgy. Social organization is supposed to involve the beginnings of urbanism and large ceremonial centers. Ideologically, Classic cultures should have a developed theocracy. The "Classic Stage" was initially defined as restricted to the complex societies of Mesoamerica and Peru. However, the time period includes other advanced cultures, such as Hopewell, Teotihuacan, and the early Maya. The "Classic Stage" followed the Formative stage (Pre-Classic) and was superseded by the Post-Classic stage. There are alternative classification systems, and this ranking would overlap what others ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphy
Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age). Historical development Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of strata or rock layering and the importance of fossil markers for correlating strata; he created the first geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Grove
David C. Grove (October 17, 1935 – May 24, 2023) was an American anthropologist, archaeologist and academic, known for his contributions and research into the Preclassic (or Formative) period cultures of Mesoamerica, in particular those of the Mexican ''altiplano'' and Gulf Coast regions. A lecturer and professor at University of Illinois at Urbana-Champaign (UIUC) for some thirty years, Grove retained a position as Professor Emeritus of Anthropology at UIUC and was also designated a Courtesy Professor of Anthropology at the University of Florida The University of Florida (Florida or UF) is a public university, public land-grant university, land-grant research university in Gainesville, Florida, United States. It is a senior member of the State University System of Florida and a preem .... Notes References * * * * External links faculty page University of Florida College of Liberal Arts and Sciences 1935 births 2023 deaths Olmec scholars American Mesoa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesoamerica
Mesoamerica is a historical region and cultural area that begins in the southern part of North America and extends to the Pacific coast of Central America, thus comprising the lands of central and southern Mexico, all of Belize, Guatemala, El Salvador, and parts of Honduras, Nicaragua and northwestern part of Costa Rica. As a cultural area, Mesoamerica is defined by a mosaic of cultural traits developed and shared by its indigenous cultures. In the pre-Columbian era, many Indigenous peoples of the Americas, indigenous societies flourished in Mesoamerica for more than 3,000 years before the Spanish colonization of the Americas began on Hispaniola in 1493. In world history, Mesoamerica was the site of two historical transformations: (i) primary urban generation, and (ii) the formation of New World cultures from the mixtures of the indigenous Mesoamerican peoples with the European, African, and Asian peoples who were introduced by the Spanish colonization of the Americas. Mesoameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balsas River
The Balsas River (Spanish Río Balsas, also locally known as the Mezcala River, or Atoyac River) is a major river of south-central Mexico. The basin flows through the states of Guerrero, México, Morelos, and Puebla. Downstream of Ciudad Altamirano, Guerrero, it forms the border between Guerrero and Michoacán. The river flows through the Sierra Madre del Sur, and empties into the Pacific Ocean at Mangrove Point, adjacent to the city of Lázaro Cárdenas, Michoacán. Several rapids along the course of the Balsas River limit its navigability and thus the river has been largely used for generation of hydroelectric power, flood control and irrigation. History The Balsas River valley was possibly one of the earliest maize growing sites in Mexico, dating from around 9200 years ago. Though it is known that successive communities of Yopis, Nahuatl-speaking Cohuixcas, Matlatzincas, Chontales, Tlahuicas and Xochimilcas have lived in the region, archeological excavations in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
