|
Vianí Fault
The Vianí Fault ( es, Falla de Vianí) is a dextral oblique thrust fault in the department of Cundinamarca in central Colombia. The fault has a total length of and runs along an average northwest to southeast strike of 055.5 ± 15 in the Eastern Ranges of the Colombian Andes. Etymology The fault is named after Vianí, Cundinamarca.Paris et al., 2000a, p.48 Description The Vianí Fault is located on the western slope of the Eastern Ranges of the Colombian Andes. The fault places Lower Cretaceous rocks of the Villeta Group ( Trincheras, Simijaca, Hiló and Capotes Formations), to the northwest against Upper Cretaceous rocks of the Güagüaquí Group to the southeast. In the southern area of the fault, the north–south oriented Vianí Fault thrusts the Seca Formation on top of the Hoyón Formation. Farther to the north at Vianí, the fault strike changes to northeast–southwest and the fault displaces the Bituima Fault.Plancha 227, 1998 The fault trace is char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vianí
Vianí is a municipality and town of Colombia in the department Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military *Department (administrative division), a geographical and administrative division within a country, ... of Cundinamarca. External links Official website Municipalities of Cundinamarca Department {{Cundinamarca-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simijaca Formation
The Simijaca Formation ( es, Formación Simijaca, K2S, Kss) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly mudstone formation dates to the Late Cretaceous period; Turonian and Cenomanian epochs, and has a maximum thickness of . Etymology The formation was defined and named in 1991 by Ulloa and Rodríguez after Simijaca, Cundinamarca.Montoya & Reyes, 2005, p.21 Description Lithologies The Simijaca Formation is characterised by a sequence of mudstones, grey and black shales with sandstone and limestone intercalations. Stratigraphy and depositional environment The Simijaca Formation conformably overlies the Chiquinquirá Sandstone, and the Hiló and Pacho Formations, and is overlain by the La Frontera Formation.Acosta & Ulloa, 2001, p.32 The age has been estimated to be Turonian, or Cenomanian.Acosta & Ulloa, 2001, p.41 Stratigraphically, the formation is time equivalent with the Chipaque Formation.Monto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In Colombia
This is a list of earthquakes in Colombia. Colombia is a seismically active country and has a large seismic risk in many areas of its territory due to its location at the boundaries of the Malpelo, Panama, Caribbean, North Andes (where most earthquakes occurred) and South American Plates along the Pacific Ring of Fire. The southeastern and extreme eastern portions of Colombia are not as seismically active as the rest of the country. The first historically registered earthquake felt in Colombia occurred on September 11, 1530, around 10:00 AM, probably with the epicentre near Cumaná, Venezuela. The earthquake was documented by Gonzalo Fernández de Oviedo y Valdés in his work ''La Historia general de las Indias'' and by friar Bartolomé de las Casas in his book ''Historia de Las Indias''.Ramírez, 1975, p.63 The first documented earthquake with its epicentre in present-day Colombia territory took place in 1566,Ramírez, 1975, p.65 with the epicentre estimated around Santander ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moment Magnitude Scale
The moment magnitude scale (MMS; denoted explicitly with or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on its seismic moment. It was defined in a 1979 paper by Thomas C. Hanks and Hiroo Kanamori. Similar to the local magnitude scale, local magnitude/Richter scale () defined by Charles Francis Richter in 1935, it uses a logarithmic scale; small earthquakes have approximately the same magnitudes on both scales. Despite the difference, news media often says "Richter scale" when referring to the moment magnitude scale. Moment magnitude () is considered the authoritative magnitude scale for ranking earthquakes by size. It is more directly related to the energy of an earthquake than other scales, and does not saturate—that is, it does not underestimate magnitudes as other scales do in certain conditions. It has become the standard scale used by seismological authorities like the U.S. Geological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bogotá Savanna
The Bogotá savanna is a montane savanna, located in the southwestern part of the Altiplano Cundiboyacense in the center of Colombia. The Bogotá savanna has an extent of and an average altitude of . The savanna is situated in the Eastern Ranges of the Colombian Andes. The Bogotá savanna is crossed from northeast to southwest by the long Bogotá River, which at the southwestern edge of the plateau forms the Tequendama Falls (''Salto del Tequendama''). Other rivers, such as the Subachoque, Bojacá, Fucha, Soacha and Tunjuelo Rivers, tributaries of the Bogotá River, form smaller valleys with very fertile soils dedicated to agriculture and cattle-breeding. Before the Spanish conquest of the Bogotá savanna, the area was inhabited by the indigenous Muisca, who formed a loose confederation of various ''caciques'', named the Muisca Confederation. The Bogotá savanna, known as ''Muyquytá'', was ruled by the ''zipa''. The people specialised in agriculture, the mining of emeralds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guaduas
Guaduas () is a town in Colombia, in the Lower Magdalena Province department of Cundinamarca, about 117 km from Bogotá. It is an agricultural and tourist center of some importance with a population of about 41,000. Its name refers to a type of bamboo cane. It is one of the cities on the Bogotá-Medellín highway. Its main plaza is featured on the Colombian ten-thousand pesos bill, and is one of the seats of the Roman Catholic Diocese of La Dorada–Guaduas History The early inhabitants of the "Valley of the Guaduas" were the indigenous Panche people. It was an important stop on the road from Santafé de Bogotá to Honda, located in a small, fertile valley. The town proper was founded on April 20, 1572 by Andrés Díaz Venero de Leiva. It was abandoned after its foundation until December 13, 1610, when Fray Tomas de Morales founded the Franciscan monastery of ''La Soledad'' on the same location. It was recognized officially as a ''villa'' on December 27, 1644 and for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pull-apart Basin
In geology, a basin is a region where subsidence generates accommodation space for the deposition of sediments. A pull-apart basin is a structural basin where two overlapping (en echelon) strike-slip faults or a fault bend creates an area of crustal extension undergoing tension, which causes the basin to sink down. Frequently, the basins are rhombic or sigmoidal in shape. Dimensionally, basins are limited to the distance between the faults and the length of overlap.Frisch, Wolfgang, Martin Meschede, and Ronald C. Blakey. ''Plate tectonics: Continental drift and mountain building''. Springer, 2010. Pull-apart basins are also referred to as overlapping-tension-zones (OTZ). Mechanics and fault configuration The inhomogeneity and structural complexity of continental crust causes faults to deviate from a straight course and frequently causes bends or step-overs in fault paths. Bends and step-overs of adjacent faults become favorable locations for extensional and compressional str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault Scarp
A fault scarp is a small step or offset on the ground surface where one side of a fault has moved vertically with respect to the other. It is the topographic expression of faulting attributed to the displacement of the land surface by movement along faults. They are exhibited either by differential movement and subsequent erosion along an old ''inactive'' geologic fault (a sort of old rupture), or by a movement on a recent active fault. Characteristics Fault scarps often contain highly fractured rock of both hard and weak consistency. In many cases, bluffs form from the upthrown block and can be very steep. The height of the scarp formation is equal to the vertical displacement along the fault. Active scarps are usually formed by tectonic displacement, e.g. when an earthquake changes the elevation of the ground and can be caused by any type of fault, including strike-slip faults, whose motion is primarily horizontal. This movement is usually episodic, with the height of the bluf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bituima Fault
Bituima is a municipality and town of Colombia in the department Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military *Department (administrative division), a geographical and administrative division within a country, ... of Cundinamarca. Municipalities of Cundinamarca Department {{Cundinamarca-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seca Formation, Colombia
The SecA protein is a cell membrane associated subunit of the eubacterial Sec or Type II secretory pathway, a system which is responsible for the secretion of proteins through the cell membrane. Within this system the SecA ATPase forms a translocase complex with the SecYEG channel, thereby driving the movement of the protein substrate across the membrane. Structure SecA is a complex protein whose structure consists of six characterized domains that can explain SecA's capabilities to bind substrates and to move them. The following five domains seem to be present in all SecA proteins that have been structurally analyzed so far. DEAD motor domain This amino acid domain is subdivided into the two nucleotide binding folds 1 and 2 (NBF1 and NBF2) where ATP is bound and hydrolyzed. The chemical energy from the phosphodiester bonds results in a conformational change which is transferred to other domains (especially the HWD and the PPXD domains) which consequently mechanicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
