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Granite ( / ˈ ɡ r æ n ɪ t / GRAN -it ) is a coarse-grained ( phaneritic ) intrusive igneous rock composed mostly of quartz , alkali feldspar , and plagioclase . It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions . These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers.

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96-614: Granit may refer to: Granite , a type of rock Granit (name) Granit (beer) , a Swedish lager beer Le Granit Regional County Municipality, Quebec , a regional county municipality in the Estrie region of eastern Quebec, Canada Lannion – Côte de Granit Airport in France Granit, Bulgaria , a village in southern Bulgaria Granit oak in Granit, Bulgaria 2ES10 Granit ,

192-420: A completely crystalline rock. Granitic rocks mainly consist of feldspar , quartz , mica , and amphibole minerals , which form an interlocking, somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende ) peppering the lighter color minerals. Occasionally some individual crystals ( phenocrysts ) are larger than the groundmass , in which case

288-449: A laboratory , library , or workplace setting. The approaches and methods used in field research vary across disciplines . For example, biologists who conduct field research may simply observe animals interacting with their environments , whereas social scientists conducting field research may interview or observe people in their natural environments to learn their languages, folklore , and social structures. Field research involves

384-627: A Russian locomotive P-700 Granit , a Soviet and Russian naval anti-ship cruise missile See also [ edit ] Granite (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Granit . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Granit&oldid=1128367963 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description

480-563: A basaltic magma to a granitic magma, but the quantities produced are small. For example, granitic rock makes up just 4% of the exposures in the South Sandwich Islands . In continental arc settings, granitic rocks are the most common plutonic rocks, and batholiths composed of these rock types extend the entire length of the arc. There are no indication of magma chambers where basaltic magmas differentiate into granites, or of cumulates produced by mafic crystals settling out of

576-448: A cultural product, and thus cannot be understood without consideration of context. Legal researchers conduct field research to understand how legal systems work in practice. Social, economic, cultural and other factors influence how legal processes, institutions and the law work (or do not work). Mintzberg played a crucial role in the popularization of field research in management . The tremendous amount of work that Mintzberg put into

672-520: A diapir it would expend far too much energy in heating wall rocks, thus cooling and solidifying before reaching higher levels within the crust. Fracture propagation is the mechanism preferred by many geologists as it largely eliminates the major problems of moving a huge mass of magma through cold brittle crust. Magma rises instead in small channels along self-propagating dykes which form along new or pre-existing fracture or fault systems and networks of active shear zones. As these narrow conduits open,

768-517: A few (known as leucogranites ) contain almost no dark minerals. Granite is nearly always massive (lacking any internal structures), hard (falling between 6 and 7 on the Mohs hardness scale) , and tough. These properties have made granite a widespread construction stone throughout human history. The word "granite" comes from the Latin granum , a grain, in reference to the coarse-grained structure of such

864-475: A field that aims to understand the particularities of contemporary consumption . Several academic journals such as Consumption Markets & Culture , and the Journal of Consumer Research regularly publish qualitative research studies that use fieldwork. In geology fieldwork is considered an essential part of training and remains an important component of many research projects. In other disciplines of

960-610: A granite that is derived from partial melting of metasedimentary rocks may have more alkali feldspar, whereas a granite derived from partial melting of metaigneous rocks may be richer in plagioclase. It is on this basis that the modern "alphabet" classification schemes are based. The letter-based Chappell & White classification system was proposed initially to divide granites into I-type (igneous source) granite and S-type (sedimentary sources). Both types are produced by partial melting of crustal rocks, either metaigneous rocks or metasedimentary rocks. I-type granites are characterized by

1056-565: A high content of sodium and calcium, and by a strontium isotope ratio, Sr/ Sr, of less than 0.708. Sr is produced by radioactive decay of Rb, and since rubidium is concentrated in the crust relative to the mantle, a low ratio suggests origin in the mantle. The elevated sodium and calcium favor crystallization of hornblende rather than biotite. I-type granites are known for their porphyry copper deposits. I-type granites are orogenic (associated with mountain building) and usually metaluminous. S-type granites are sodium-poor and aluminum-rich. As

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1152-512: A library of music to be analyzed by other scholars. Methodologies began to shift in the early 20th century. George Herzog, an anthropologist and ethnomusicologist, published a seminal paper titled "Plains Ghost Dance and Great Basin Music", reflecting the increased importance of fieldwork through his extended residency in the Great Basin and his attention to cultural contexts. Herzog also raised

1248-679: A long history. Cultural anthropologists have long used field research to study other cultures. Although the cultures do not have to be different, this has often been the case in the past with the study of so-called primitive cultures, and even in sociology the cultural differences have been ones of class. The work is done... in " 'Fields' that is, circumscribed areas of study which have been the subject of social research". Fields could be education, industrial settings, or Amazonian rain forests. Field research may be conducted by ethologists such as Jane Goodall . Alfred Radcliffe-Brown [1910] and Bronisław Malinowski [1922] were early anthropologists who set

1344-411: A longer period of time. A strength of observation and interaction over extended periods of time is that researchers can discover discrepancies between what participants say—and often believe—should happen (the formal system) and what actually does happen, or between different aspects of the formal system; in contrast, a one-time survey of people's answers to a set of questions might be quite consistent, but

1440-824: A much higher proportion of clay with the Cecil soil series a prime example of the consequent Ultisol great soil group. Granite is a natural source of radiation , like most natural stones. Potassium-40 is a radioactive isotope of weak emission, and a constituent of alkali feldspar , which in turn is a common component of granitic rocks, more abundant in alkali feldspar granite and syenites . Some granites contain around 10 to 20 parts per million (ppm) of uranium . By contrast, more mafic rocks, such as tonalite, gabbro and diorite , have 1 to 5 ppm uranium, and limestones and sedimentary rocks usually have equally low amounts. Many large granite plutons are sources for palaeochannel -hosted or roll front uranium ore deposits , where

1536-536: A peculiar mineralogy and geochemistry, with particularly high silicon and potassium at the expense of calcium and magnesium and a high content of high field strength cations (cations with a small radius and high electrical charge, such as zirconium , niobium , tantalum , and rare earth elements .) They are not orogenic, forming instead over hot spots and continental rifting, and are metaluminous to mildly peralkaline and iron-rich. These granites are produced by partial melting of refractory lithology such as granulites in

1632-428: A picture will be objective, a matter of fact, independent of the state of mind of the particular agents reported on. Approaching the economy from a different angle, another kind of fieldwork can give us a picture of the state of mind of economic agents (their true motivations, their beliefs, state knowledge, expectations, their preferences and values). Business use of field research is an applied form of anthropology and

1728-568: A range of hills, formed by the metamorphic aureole or hornfels . Granite often occurs as relatively small, less than 100 km stock masses ( stocks ) and in batholiths that are often associated with orogenic mountain ranges. Small dikes of granitic composition called aplites are often associated with the margins of granitic intrusions . In some locations, very coarse-grained pegmatite masses occur with granite. Granite forms from silica-rich ( felsic ) magmas. Felsic magmas are thought to form by addition of heat or water vapor to rock of

1824-456: A range of well-defined, although variable, methods: informal interviews, direct observation , participation in the life of the group, collective discussions, analyses of personal documents produced within the group, self-analysis, results from activities undertaken off- or on-line, and life-histories. Although the method generally is characterized as qualitative research , it may (and often does) include quantitative dimensions. Field research has

1920-415: A result, they contain micas such as biotite and muscovite instead of hornblende. Their strontium isotope ratio is typically greater than 0.708, suggesting a crustal origin. They also commonly contain xenoliths of metamorphosed sedimentary rock, and host tin ores. Their magmas are water-rich, and they readily solidify as the water outgasses from the magma at lower pressure, so they less commonly make it to

2016-648: A sociology of culture, which Bourdieu labeled a "theory of practice". His contributions to sociology were both empirical and theoretical. His conceptual apparatus is based on three key terms: habitus , capital, and field. Furthermore, Bourdieu fiercely opposed rational choice theory as grounded in a misunderstanding of how social agents operate. Bourdieu argued that social agents do not continuously calculate according to explicit rational and economic criteria. According to Bourdieu, social agents operate according to an implicit practical logic—a practical sense—and bodily dispositions. Social agents act according to their "feel for

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2112-466: Is grus , which is often made up of coarse-grained fragments of disintegrated granite. Climatic variations also influence the weathering rate of granites. For about two thousand years, the relief engravings on Cleopatra's Needle obelisk had survived the arid conditions of its origin before its transfer to London. Within two hundred years, the red granite has drastically deteriorated in the damp and polluted air there. Soil development on granite reflects

2208-441: Is interviewing , specifically interviewing in the qualitative paradigm. Interviewing can be done in different formats, this all depends on individual researcher preferences, research purpose, and the research question asked. In qualitative research , there are many ways of analyzing data gathered in the field. One of the two most common methods of data analysis are thematic analysis and narrative analysis . As mentioned before,

2304-545: Is microgranite . The extrusive igneous rock equivalent of granite is rhyolite . Granitic rock is widely distributed throughout the continental crust . Much of it was intruded during the Precambrian age; it is the most abundant basement rock that underlies the relatively thin sedimentary veneer of the continents. Outcrops of granite tend to form tors , domes or bornhardts , and rounded massifs . Granites sometimes occur in circular depressions surrounded by

2400-517: Is 3–6·10 Pa·s. The melting temperature of dry granite at ambient pressure is 1215–1260 °C (2219–2300 °F); it is strongly reduced in the presence of water, down to 650 °C at a few hundred megapascals of pressure. Granite has poor primary permeability overall, but strong secondary permeability through cracks and fractures if they are present. A worldwide average of the chemical composition of granite, by weight percent, based on 2485 analyses: The medium-grained equivalent of granite

2496-438: Is a point of view that fits very well with anthropological research, which has for some time shown us the logic of local systems of knowledge — and the damage that can be done when "solutions" to problems are imposed from outside or above without adequate consultation. Elinor Ostrom, for example, combines field case studies and experimental lab work in her research. Using this combination, she contested longstanding assumptions about

2592-582: Is a structured type of research strategy. It is a widely used methodology in many disciplines, particularly, cultural anthropology, but also sociology, communication studies, and social psychology. Its aim is to gain a close and intimate familiarity with a given group of individuals (such as a religious, occupational, or sub cultural group, or a particular community) and their practices through an intensive involvement with people in their natural environment, usually over an extended period of time. The method originated in field work of social anthropologists, especially

2688-410: Is an excess of aluminum beyond what can be taken up in feldspars (Al 2 O 3 > CaO + K 2 O + Na 2 O) are described as peraluminous , and they contain aluminum-rich minerals such as muscovite . The average density of granite is between 2.65 and 2.75 g/cm (165 and 172 lb/cu ft), its compressive strength usually lies above 200 MPa (29,000 psi), and its viscosity near STP

2784-478: Is an unbroken series of reactions to all sorts of request that come from all around the manager, from both the internal and external environments. Third, the manager deals with the same issues several times, for short periods of time; he or she is far from the traditional image of the individual who deals with one problem at a time, in a calm and orderly fashion. Fourth, the manager acts as a focal point, an interface, or an intersection between several series of actors in

2880-399: Is as likely to be advised by sociologists or statisticians in the case of surveys. Consumer marketing field research is the primary marketing technique that is used by businesses to research their target market. Fieldwork in ethnomusicology has changed greatly over time. Alan P. Merriam cites the evolution of fieldwork as a constant interplay between the musicological and ethnological roots of

2976-637: Is believed to have a mass of around 81 tonnes. It was the tallest temple in south India. Imperial Roman granite was quarried mainly in Egypt, and also in Turkey, and on the islands of Elba and Giglio . Granite became "an integral part of the Roman language of monumental architecture". The quarrying ceased around the third century AD. Beginning in Late Antiquity the granite was reused, which since at least

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3072-434: Is called a binary or two-mica granite. Two-mica granites are typically high in potassium and low in plagioclase, and are usually S-type granites or A-type granites, as described below . Another aspect of granite classification is the ratios of metals that potentially form feldspars. Most granites have a composition such that almost all their aluminum and alkali metals (sodium and potassium) are combined as feldspar. This

3168-616: Is different from Wikidata All article disambiguation pages All disambiguation pages Granite Granite is typical of a larger family of granitic rocks , or granitoids , that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification ), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though

3264-416: Is essential to the process. Field notes are a key part of the ethnographic record. The process of field notes begin as the researcher participates in local scenes and experiences in order to make observations that will later be written up. The field researcher tries first to take mental notes of certain details in order that they be written down later. Field Note Chart Another method of data collection

3360-574: Is essentially a relational procedure whose philosophy fully expresses what in my view constitutes social reality. It is a procedure that 'thinks' in relations, as I try to do it with the concept of field." One of the classic ethnographies in Sociology is the book Ain't No Makin' It: Aspirations & Attainment in a Low-Income Neighborhood by Jay MacLeod. The study addresses the reproduction of social inequality among low-income, male teenagers. The researcher spent time studying two groups of teenagers in

3456-530: Is less likely to show conflicts between different aspects of the social system or between conscious representations and behavior. Field research lies at the heart of archaeological research. It may include the undertaking of broad area surveys (including aerial surveys ); of more localised site surveys (including photographic, drawn , and geophysical surveys, and exercises such as fieldwalking ); and of excavation . In biology , field research typically involves studying of free-living wild animals in which

3552-433: Is limited by the amount of thermal energy available, which must be replenished by crystallization of higher-melting minerals in the magma. Thus, the magma is melting crustal rock at its roof while simultaneously crystallizing at its base. This results in steady contamination with crustal material as the magma rises. This may not be evident in the major and minor element chemistry, since the minerals most likely to crystallize at

3648-404: Is permeated by sheets and channels of light granitic rock (the leucosome ). The leucosome is interpreted as partial melt of a parent rock that has begun to separate from the remaining solid residue (the melanosome). If enough partial melt is produced, it will separate from the source rock, become more highly evolved through fractional crystallization during its ascent toward the surface, and become

3744-454: Is relieved when overlying material is removed by erosion or other processes. Chemical weathering of granite occurs when dilute carbonic acid , and other acids present in rain and soil waters, alter feldspar in a process called hydrolysis . As demonstrated in the following reaction, this causes potassium feldspar to form kaolinite , with potassium ions, bicarbonate, and silica in solution as byproducts. An end product of granite weathering

3840-411: Is some concern that some granite sold as countertops or building material may be hazardous to health. Dan Steck of St. Johns University has stated that approximately 5% of all granite is of concern, with the caveat that only a tiny percentage of the tens of thousands of granite slab types have been tested. Resources from national geological survey organizations are accessible online to assist in assessing

3936-479: Is that magma will rise through the crust as a single mass through buoyancy . As it rises, it heats the wall rocks , causing them to behave as a power-law fluid and thus flow around the intrusion allowing it to pass without major heat loss. This is entirely feasible in the warm, ductile lower crust where rocks are easily deformed, but runs into problems in the upper crust which is far colder and more brittle. Rocks there do not deform so easily: for magma to rise as

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4032-410: Is the case when K 2 O + Na 2 O + CaO > Al 2 O 3 > K 2 O + Na 2 O. Such granites are described as normal or metaluminous . Granites in which there is not enough aluminum to combine with all the alkali oxides as feldspar (Al 2 O 3 < K 2 O + Na 2 O) are described as peralkaline , and they contain unusual sodium amphiboles such as riebeckite . Granites in which there

4128-409: Is typically orthoclase or microcline and is often perthitic . The plagioclase is typically sodium-rich oligoclase . Phenocrysts are usually alkali feldspar. Granitic rocks are classified according to the QAPF diagram for coarse grained plutonic rocks and are named according to the percentage of quartz , alkali feldspar ( orthoclase , sanidine , or microcline ) and plagioclase feldspar on

4224-428: Is uncommon, is classified simply as quartz-rich granitoid or, if composed almost entirely of quartz, as quartzolite . True granites are further classified by the percentage of their total feldspar that is alkali feldspar. Granites whose feldspar is 65% to 90% alkali feldspar are syenogranites , while the feldspar in monzogranite is 35% to 65% alkali feldspar. A granite containing both muscovite and biotite micas

4320-535: The Earth and atmospheric sciences , field research refers to field experiments (such as the VORTEX projects ) utilizing in situ instruments. Permanent observation networks are also maintained for other uses but are not necessarily considered field research, nor are permanent remote sensing installations. The objective of field research in economics is to get beneath the surface, to contrast observed behaviour with

4416-571: The A-Q-P half of the diagram. True granite (according to modern petrologic convention) contains between 20% and 60% quartz by volume, with 35% to 90% of the total feldspar consisting of alkali feldspar . Granitic rocks poorer in quartz are classified as syenites or monzonites , while granitic rocks dominated by plagioclase are classified as granodiorites or tonalites . Granitic rocks with over 90% alkali feldspar are classified as alkali feldspar granites . Granitic rock with more than 60% quartz, which

4512-615: The European Union safety standards (section 4.1.1.1 of the National Health and Engineering study) and radon emission levels well below the average outdoor radon concentrations in the US. Granite and related marble industries are considered one of the oldest industries in the world, existing as far back as Ancient Egypt . Major modern exporters of granite include China, India, Italy, Brazil, Canada, Germany, Sweden, Spain and

4608-511: The United States. The Red Pyramid of Egypt ( c.  2590 BC ), named for the light crimson hue of its exposed limestone surfaces, is the third largest of Egyptian pyramids . Pyramid of Menkaure , likely dating 2510 BC, was constructed of limestone and granite blocks. The Great Pyramid of Giza (c. 2580 BC ) contains a huge granite sarcophagus fashioned of "Red Aswan Granite". The mostly ruined Black Pyramid dating from

4704-419: The base of the chamber are the same ones that would crystallize anyway, but crustal assimilation is detectable in isotope ratios. Heat loss to the country rock means that ascent by assimilation is limited to distance similar to the height of the magma chamber. Physical weathering occurs on a large scale in the form of exfoliation joints , which are the result of granite's expanding and fracturing as pressure

4800-482: The better will be the absorption of those ideas. Better grasping of such material means a better understanding of the forces of culture operating in the area and the ways they modify the lives of the people under study. Social scientists (i.e. anthropologists, social psychologists, etc.) have always been taught to be free from ethnocentrism (i.e. the belief in the superiority of one's own ethnic group), when conducting any type of field research. When humans themselves are

4896-418: The big difference in rheology between mafic and felsic magmas makes this process problematic in nature. Granitization is an old, and largely discounted, hypothesis that granite is formed in place through extreme metasomatism . The idea behind granitization was that fluids would supposedly bring in elements such as potassium, and remove others, such as calcium, to transform a metamorphic rock into granite. This

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4992-542: The community the anthropologist is studying, and data analysis. Traditional participant observation is usually undertaken over an extended period of time, ranging from several months to many years, and even generations. An extended research time period means that the researcher is able to obtain more detailed and accurate information about the individuals, community, and/or population under study. Observable details (like daily time allotment) and more hidden details (like taboo behavior) are more easily observed and interpreted over

5088-412: The contrary, it is fragmented, irregular, choppy, extremely changeable and variable. This work is also marked by brevity: no sooner has a manager finished one activity than he or she is called up to jump to another, and this pattern continues nonstop. Second, the manager’s daily work is a not a series of self-initiated, willful actions transformed into decisions, after examining the circumstances. Rather, it

5184-425: The discipline. Before the 1950s, before ethnomusicology resembled what it is today, fieldwork and research were considered separate tasks. Scholars focused on analyzing music outside of its context through a scientific lens, drawing from the field of musicology. Notable scholars include Carl Stumf and Eric von Hornbostel, who started as Stumpf's assistant. They are known for making countless recordings and establishing

5280-404: The division between S-type (produced by underplating) and I-type (produced by injection and differentiation) granites, discussed below. The composition and origin of any magma that differentiates into granite leave certain petrological evidence as to what the granite's parental rock was. The final texture and composition of a granite are generally distinctive as to its parental rock. For instance,

5376-473: The early 16th century became known as spolia . Through the process of case-hardening , granite becomes harder with age. The technology required to make tempered metal chisels was largely forgotten during the Middle Ages. As a result, Medieval stoneworkers were forced to use saws or emery to shorten ancient columns or hack them into discs. Giorgio Vasari noted in the 16th century that granite in quarries

5472-657: The epidemic (such as the pathogen and vector(s) as well as social or sexual contacts, depending upon the situation). Pierre Bourdieu played a crucial role in popularizing fieldwork in sociology. During the Algerian War in 1958–1962, Bourdieu undertook ethnographic research into the clash through a study of the Kabyle people (a subgroup of the Berbers ), which provided the groundwork for his anthropological reputation. His first book, Sociologie de L'Algerie ( The Algerians ),

5568-409: The findings earned him the title of leader of a new school of management, the descriptive school, as opposed to the prescriptive and normative schools that preceded his work. The schools of thought derive from Taylor, Henri Fayol , Lyndall Urwick , Herbert A. Simon , and others endeavored to prescribe and expound norms to show what managers must or should do. With the arrival of Mintzberg, the question

5664-579: The first magma to enter solidifies and provides a form of insulation for later magma. These mechanisms can operate in tandem. For example, diapirs may continue to rise through the brittle upper crust through stoping , where the granite cracks the roof rocks, removing blocks of the overlying crust which then sink to the bottom of the diapir while the magma rises to take their place. This can occur as piecemeal stopping (stoping of small blocks of chamber roof), as cauldron subsidence (collapse of large blocks of chamber roof), or as roof foundering (complete collapse of

5760-414: The game" (the "feel" being, roughly, habitus, and the "game" being the field). Bourdieu's anthropological work was focused on the analysis of the mechanisms of reproduction of social hierarchies. Bourdieu criticized the primacy given to the economic factors, and stressed that the capacity of social actors to actively impose and engage their cultural productions and symbolic systems plays an essential role in

5856-713: The grotto is a highly regarded piece of Buddhist art , and along with the temple complex to which it belongs, Seokguram was added to the UNESCO World Heritage List in 1995. Rajaraja Chola I of the Chola Dynasty in South India built the world's first temple entirely of granite in the 11th century AD in Tanjore , India . The Brihadeeswarar Temple dedicated to Lord Shiva was built in 1010. The massive Gopuram (ornate, upper section of shrine)

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5952-443: The importance of examining institutional contexts when performing economic analyses. Both Ostrom and Williamson agree that "top-down" panaceas or "cookie cutter" approaches to policy problems don't work. They believe that policymakers need to give local people a chance to shape the systems used to allocate resources and resolve disputes. Sometimes, Ostrom points out, local solutions can be the most efficient and effective options. This

6048-474: The lower crust , rather than by decompression of mantle rock, as is the case with basaltic magmas. It has also been suggested that some granites found at convergent boundaries between tectonic plates , where oceanic crust subducts below continental crust, were formed from sediments subducted with the oceanic plate. The melted sediments would have produced magma intermediate in its silica content, which became further enriched in silica as it rose through

6144-729: The lower continental crust at high thermal gradients. This leads to significant extraction of hydrous felsic melts from granulite-facies resitites. A-type granites occur in the Koettlitz Glacier Alkaline Province in the Royal Society Range, Antarctica. The rhyolites of the Yellowstone Caldera are examples of volcanic equivalents of A-type granite. M-type granite was later proposed to cover those granites that were clearly sourced from crystallized mafic magmas, generally sourced from

6240-435: The magma is inevitable once enough magma has accumulated. However, the question of precisely how such large quantities of magma are able to shove aside country rock to make room for themselves (the room problem ) is still a matter of research. Two main mechanisms are thought to be important: Of these two mechanisms, Stokes diapirism has been favoured for many years in the absence of a reasonable alternative. The basic idea

6336-426: The magma. Other processes must produce these great volumes of felsic magma. One such process is injection of basaltic magma into the lower crust, followed by differentiation, which leaves any cumulates in the mantle. Another is heating of the lower crust by underplating basaltic magma, which produces felsic magma directly from crustal rock. The two processes produce different kinds of granites, which may be reflected in

6432-408: The magmatic parent of granitic rock. The residue of the source rock becomes a granulite . The partial melting of solid rocks requires high temperatures and the addition of water or other volatiles which lower the solidus temperature (temperature at which partial melting commences) of these rocks. It was long debated whether crustal thickening in orogens (mountain belts along convergent boundaries )

6528-405: The mantle. Although the fractional crystallisation of basaltic melts can yield small amounts of granites, which are sometimes found in island arcs, such granites must occur together with large amounts of basaltic rocks. H-type granites were suggested for hybrid granites, which were hypothesized to form by mixing between mafic and felsic from different sources, such as M-type and S-type. However,

6624-427: The models for future work. The quality of results obtained from field research depends on the data gathered in the field. The data in turn, depend upon the field worker, their level of involvement, and ability to see and visualize things that other individuals visiting the area of study may fail to notice. The more open researchers are to new ideas, concepts, and things which they may not have seen in their own culture,

6720-492: The number of field courses has not kept pace with demand. Cost has been a barrier to student participation. In applied business disciplines, such as in marketing , fieldwork is a standard research method both for commercial purposes, like market research , and academic research . For instance, researchers have used ethnography , netnography , and in-depth interviews within Consumer Culture Theory ,

6816-424: The organization: external and internal environments, collaborators, partners, superiors, subordinates, colleagues, and so forth. He or she must constantly ensure, achieve, or facilitate interactions between all these categories of actors to allow the firm to function smoothly.’’ In public health , the use of the term field research refers to epidemiology or the study of epidemics through the gathering of data about

6912-441: The overlying crust. Early fractional crystallisation serves to reduce a melt in magnesium and chromium, and enrich the melt in iron, sodium, potassium, aluminum, and silicon. Further fractionation reduces the content of iron, calcium, and titanium. This is reflected in the high content of alkali feldspar and quartz in granite. The presence of granitic rock in island arcs shows that fractional crystallization alone can convert

7008-536: The possibility that groups of people could cooperate to solve common pool problems, as opposed to being regulated by the state or governed by the market. Edward J. Nell argued in 1998 that there are two types of field research in economics. One kind can give us a carefully drawn picture of institutions and practices, general in that it applies to all activities of a certain kind of particular society or social setting, but still specialized to that society or setting. Although institutions and practices are intangibles, such

7104-480: The prevailing understanding of a process, and to relate language and description to behavior ( Deirdre McCloskey , 1985) . The 2009 Nobel Prize Winners in Economics, Elinor Ostrom and Oliver Williamson , have advocated mixed methods and complex approaches in economics and hinted implicitly to the relevance of field research approaches in economics. In a recent interview Oliver Williamson and Elinor Ostrom discuss

7200-419: The question of how the formal qualities of the music he was studying demonstrated the social function of the music itself. Ethnomusicology today relies heavily on the relationship between the researcher and their teachers and consultants. Many ethnomusicologists have assumed the role of student in order to fully learn an instrument and its role in society. Research in the discipline has grown to consider music as

7296-736: The reign of Amenemhat III once had a polished granite pyramidion or capstone, which is now on display in the main hall of the Egyptian Museum in Cairo (see Dahshur ). Other uses in Ancient Egypt include columns , door lintels , sills , jambs , and wall and floor veneer. How the Egyptians worked the solid granite is still a matter of debate. Tool marks described by the Egyptologist Anna Serotta indicate

7392-456: The reproduction of social structures of domination. Bourdieu's empirical work played a crucial role in the popularization of correspondence analysis and particularly multiple correspondence analysis . Bourdieu held that these geometric techniques of data analysis are, like his sociology, inherently relational. In the preface to his book The Craft of Sociology , Bourdieu argued that: "I use Correspondence Analysis very much, because I think that it

7488-564: The risk factors in granite country and design rules relating, in particular, to preventing accumulation of radon gas in enclosed basements and dwellings. A study of granite countertops was done (initiated and paid for by the Marble Institute of America) in November 2008 by National Health and Engineering Inc. of USA. In this test, all of the 39 full-size granite slabs that were measured for the study showed radiation levels well below

7584-418: The rock's high quartz content and dearth of available bases, with the base-poor status predisposing the soil to acidification and podzolization in cool humid climates as the weather-resistant quartz yields much sand. Feldspars also weather slowly in cool climes, allowing sand to dominate the fine-earth fraction. In warm humid regions, the weathering of feldspar as described above is accelerated so as to allow

7680-414: The rocks often bear a close resemblance. Under these conditions, granitic melts can be produced in place through the partial melting of metamorphic rocks by extracting melt-mobile elements such as potassium and silicon into the melts but leaving others such as calcium and iron in granulite residues. This may be the origin of migmatites . A migmatite consists of dark, refractory rock (the melanosome ) that

7776-492: The roof of a shallow magma chamber accompanied by a caldera eruption.) There is evidence for cauldron subsidence at the Mt. Ascutney intrusion in eastern Vermont. Evidence for piecemeal stoping is found in intrusions that are rimmed with igneous breccia containing fragments of country rock. Assimilation is another mechanism of ascent, where the granite melts its way up into the crust and removes overlying material in this way. This

7872-811: The students of Franz Boas in the United States, and in the urban research of the Chicago School of sociology. Max Gluckman noted that Bronisław Malinowski significantly developed the idea of fieldwork, but it originated with Alfred Cort Haddon in England and Franz Boas in the United States. Robert G. Burgess concluded that "it is Malinowski who is usually credited with being the originator of intensive anthropological field research". Anthropological fieldwork uses an array of methods and approaches that include, but are not limited to: participant observation, structured and unstructured interviews , archival research , collecting demographic information from

7968-411: The subject of study, protocols must be devised to reduce the risk of observer bias and the acquisition of too theoretical or idealized explanations of the workings of a culture. Participant observation, data collection, and survey research are examples of field research methods, in contrast to what is often called experimental or lab research. When conducting field research, keeping an ethnographic record

8064-417: The subjects are observed in their natural habitat , without changing, harming, or materially altering the setting or behavior of the animals under study. Field research is an indispensable part of biological science. Animal migration tracking (including bird ringing /banding) is a frequently-used field technique, allowing field scientists to track migration patterns and routes, and animal longevity in

8160-435: The surface than magmas of I-type granites, which are thus more common as volcanic rock (rhyolite). They are also orogenic but range from metaluminous to strongly peraluminous. Although both I- and S-type granites are orogenic, I-type granites are more common close to the convergent boundary than S-type. This is attributed to thicker crust further from the boundary, which results in more crustal melting. A-type granites show

8256-440: The texture is known as porphyritic . A granitic rock with a porphyritic texture is known as a granite porphyry . Granitoid is a general, descriptive field term for lighter-colored, coarse-grained igneous rocks. Petrographic examination is required for identification of specific types of granitoids. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy . The alkali feldspar in granites

8352-481: The type of analysis a researcher decides to use depends on the research question asked, the researcher's field, and the researcher's personal method of choice. In anthropology , field research is organized so as to produce a kind of writing called ethnography . Ethnography can refer to both a methodology and a product of research, namely a monograph or book. Ethnography is a grounded, inductive method that heavily relies on participant-observation. Participant observation

8448-502: The uranium washes into the sediments from the granite uplands and associated, often highly radioactive pegmatites. Cellars and basements built into soils over granite can become a trap for radon gas, which is formed by the decay of uranium. Radon gas poses significant health concerns and is the number two cause of lung cancer in the US behind smoking. Thorium occurs in all granites. Conway granite has been noted for its relatively high thorium concentration of 56±6 ppm. There

8544-617: The use of flint tools on finer work with harder stones, e.g. when producing the hieroglyphic inscriptions. Patrick Hunt has postulated that the Egyptians used emery , which has greater hardness. The Seokguram Grotto in Korea is a Buddhist shrine and part of the Bulguksa temple complex. Completed in 774 AD, it is an artificial grotto constructed entirely of granite. The main Buddha of

8640-482: The wild. Knowledge about animal migrations is essential to accurately determining the size and location of protected areas . Field research also can involve study of other kingdoms of life, such as plantae , fungi , and microbes , as well as ecological interactions among species. Field courses have been shown to be efficacious for generating long-term interest in and commitment for undergraduate students in STEM, but

8736-410: Was "far softer and easier to work than after it has lain exposed" while ancient columns, because of their "hardness and solidity have nothing to fear from fire or sword, and time itself, that drives everything to ruin, not only has not destroyed them but has not even altered their colour." Field research Field research , field studies , or fieldwork is the collection of raw data outside

8832-470: Was based on his decade of work as a participant-observer in Algerian society. One of the outstanding qualities of his work has been his innovative combination of different methods and research strategies and his analytical skills in interpreting the obtained data. Throughout his career, Bourdieu sought to connect his theoretical ideas with empirical research grounded in everyday life. His work can be seen as

8928-429: Was no longer what must or should be done, but what a manager actually does during the day. More recently, in his 2004 book Managers Not MBAs, Mintzberg examined what he believes to be wrong with management education today. Aktouf (2006, p. 198) summed-up Mintzberg observations about what takes place in the field:‘’First, the manager’s job is not ordered, continuous, and sequential, nor is it uniform or homogeneous. On

9024-711: Was successful in France and published in America in 1962. A follow-up, Algeria 1960: The Disenchantment of the World: The Sense of Honour: The Kabyle House or the World Reversed: Essays , published in English in 1979 by Cambridge University Press , established him as a significant figure in the field of ethnology and a pioneer advocate scholar for more intensive fieldwork in social sciences. The book

9120-405: Was sufficient to produce granite melts by radiogenic heating , but recent work suggests that this is not a viable mechanism. In-situ granitization requires heating by the asthenospheric mantle or by underplating with mantle-derived magmas. Granite magmas have a density of 2.4 Mg/m , much less than the 2.8 Mg/m of high-grade metamorphic rock. This gives them tremendous buoyancy, so that ascent of

9216-564: Was supposed to occur across a migrating front. However, experimental work had established by the 1960s that granites were of igneous origin. The mineralogical and chemical features of granite can be explained only by crystal-liquid phase relations, showing that there must have been at least enough melting to mobilize the magma. However, at sufficiently deep crustal levels, the distinction between metamorphism and crustal melting itself becomes vague. Conditions for crystallization of liquid magma are close enough to those of high-grade metamorphism that

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