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Which tools might a geologist use to examine a rock sample more closely?
Wiki User
∙ 14y ago
There are a number of differing instruments used to more closely examine rocks.
The simplest is the hand lens (or loupe),A used to observe hand specimens of rocks in the field and aides identification of rock forming minerals. Hand lenses typically magnify between 3 - 10 times normal size.
If the geologist decides the sample is of further interest they will return to the lab and have thin sections of the rock cut and mounted on slides. To make the thin sections, the rock is ground down to a thickness of 0.03mm (30 microns) where most minerals become more or less transparent and can be studied by a petrographic polarising microscope using transmitted light.B Petrographic microscopes typically magnify between 40 - 600 times normal size.
For even more detailed study, a scanning electron microscopeC or X-ray diffractometerD may be used which can examine crystal lattice structures at the atomic scale - A process known as X-ray crystallographyE
A Loupe / Handlens - Wikipedia Entry.
B The Polarising Microscope - The University of Bristol.
C Yale Electron Microprobe and SEM Lab.
D Yale (Geology & Geophysics) X-Ray Diffraction Lab.
E X-ray Crystallography - Wikipedia Entry.
Please see related links.
Wiki User
∙ 14y ago
Anonymous
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What is an antonym for specimen?
There is no antonym for specimen.However, the opposite of taking a specimen, meaning a testing sample, would be to examine the source of the specimen directly."Population" or "aggregate" might come close to an opposite meaning.
How might you identify whether a mineral sample might be lodestone?
sniffing butts.XD
Who might use aseptic technique?
microbiologist,biologist and everyone that need to get a clean sample(prevent adding bacteria to the sample).
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What geologist might use?
They would use a rock hammer.
Where might a geologist live?
in Alaska lolz jk lmfao
What is the Role of a geologist in petroleum industry?
The role of a geologist varies not only with his area of specialization (there are numerous) but also experience earned on the job and the occupational specialties as described by the company for which he works. In general and traditionally, the geologist has been responsible for the exploration and delineation of the petroleum reservoir. Historically in the field the geologist would find and sample potential source rock and potential reservoir rock. He would map potential structures that could be petroleum traps and define where best to drill. Today, the lines are more blurred. The geologist can still be responsible for collecting rock samples in the field, but this might also be carried out by another geologist in a core lab examining core samples from another well whose samples correlate with the new area of interest. The gross surface structure of an area might be mapped by a geologist in the field but more likely it will be done by a geologist specializing in remote sensing looking at satellite imagery or aerial photos. A geologist specializing in basin analysis might chime in with information on the timing of the source rock and reservoir rock structure giving information on whether the source rock reached maturity before or after the potential traps were formed. A structural geologist might be consulted to advise on the potential for fractures in the area that might serve as migration pathways or potential porosity in the reservoir rock. Another geologist, a petrophysicist might examine the cores to determine the reservoir properties of the rock and correlate them to seismic properties. These would in turn give information to the geologist/geophysicist doing seismic interpretation of the area. Still another geologist specializing in well log analysis (also a potential petrophysicist) might correlate well logs from wells drilled in the general or regional area to determine the underlying sedimentary environment and facies distribution. He might consult a specialist in seismic stratigraphy or sedimentary petrology, both geologists for additional input. From this information a geologist would work up a volumetrics analysis to determine the potential recoverable oil present in the unproven reservoir. Another geologist might work up a risk analysis on the the potential reservoir to help determine if the prospect is worth drilling. Once the decision has been made, and drilling commences, a well site geologist would be responsible for monitoring the drillng progress and identifying potential hydrocarbon bearing zones from drill cuttings and mud returns. Another geologist would be responsible for mud logging. Once the well is complete, the well site geologist for the company drilling, would stipulate the zones to be logged by the service company. The service company logging engineer would recommend a log suite to be run. The company well site geologist would provide oversight and quality control on the log run and the data. A decision on whether to or how to complete the well and what intervals to perforate would be made. This data would be provided back to the geologists in the office to assess the results and if possible develop a reservoir model. If enough wells are present in the area a detailed reservoir model can be constructed from the logs and seismic data. If this is a wildcat or new field well the team might keep control or a reservoir or development geologist might be brought in to facilitate infill drilling to completely exploit the new found reservoir. The development or reservoir geologist might work closely with the reservoir engineer to plan out how to most efficiently exploit the reservoir. In some instances, like a small company, one geologist would fill nearly all the roles himself. In larger companies with more compartmentalization the roles might be carried out by separate individuals within the larger organization. I am sure I have overlooked something, but this will give you an idea of the many roles a geologist plays in finding petroleum.
What is the role of geologist in petroleum industry?
The role of a geologist varies not only with his area of specialization (there are numerous) but also experience earned on the job and the occupational specialties as described by the company for which he works. In general and traditionally, the geologist has been responsible for the exploration and delineation of the petroleum reservoir. Historically in the field the geologist would find and sample potential source rock and potential reservoir rock. He would map potential structures that could be petroleum traps and define where best to drill. Today, the lines are more blurred. The geologist can still be responsible for collecting rock samples in the field, but this might also be carried out by another geologist in a core lab examining core samples from another well whose samples correlate with the new area of interest. The gross surface structure of an area might be mapped by a geologist in the field but more likely it will be done by a geologist specializing in remote sensing looking at satellite imagery or aerial photos. A geologist specializing in basin analysis might chime in with information on the timing of the source rock and reservoir rock structure giving information on whether the source rock reached maturity before or after the potential traps were formed. A structural geologist might be consulted to advise on the potential for fractures in the area that might serve as migration pathways or potential porosity in the reservoir rock. Another geologist, a petrophysicist might examine the cores to determine the reservoir properties of the rock and correlate them to seismic properties. These would in turn give information to the geologist/geophysicist doing seismic interpretation of the area. Still another geologist specializing in well log analysis (also a potential petrophysicist) might correlate well logs from wells drilled in the general or regional area to determine the underlying sedimentary environment and facies distribution. He might consult a specialist in seismic stratigraphy or sedimentary petrology, both geologists for additional input. From this information a geologist would work up a volumetrics analysis to determine the potential recoverable oil present in the unproven reservoir. Another geologist might work up a risk analysis on the the potential reservoir to help determine if the prospect is worth drilling. Once the decision has been made, and drilling commences, a well site geologist would be responsible for monitoring the drillng progress and identifying potential hydrocarbon bearing zones from drill cuttings and mud returns. Another geologist would be responsible for mud logging. Once the well is complete, the well site geologist for the company drilling, would stipulate the zones to be logged by the service company. The service company logging engineer would recommend a log suite to be run. The company well site geologist would provide oversight and quality control on the log run and the data. A decision on whether to or how to complete the well and what intervals to perforate would be made. This data would be provided back to the geologists in the office to assess the results and if possible develop a reservoir model. If enough wells are present in the area a detailed reservoir model can be constructed from the logs and seismic data. If this is a wildcat or new field well the team might keep control or a reservoir or development geologist might be brought in to facilitate infill drilling to completely exploit the new found reservoir. The development or reservoir geologist might work closely with the reservoir engineer to plan out how to most efficiently exploit the reservoir. In some instances, like a small company, one geologist would fill nearly all the roles himself. In larger companies with more compartmentalization the roles might be carried out by separate individuals within the larger organization. I am sure I have overlooked something, but this will give you an idea of the many roles a geologist plays in finding petroleum.
What is an antonym for specimen?
There is no antonym for specimen.However, the opposite of taking a specimen, meaning a testing sample, would be to examine the source of the specimen directly."Population" or "aggregate" might come close to an opposite meaning.
If researchers wanted to examine the opinions of people listed in a city directory they might call every tenth or fiftieth or hundredth name listed This would constitute a?
This would constitute a random sample.
Why would a geologist want to be a astronaut?
A geologist might want to be an astronaut to study the geology of various planets and moons. The moon and perhaps, some day, Mars are candidates for geologists to visit.
What might geologist expect to see after a earth-quake?
They expect to see earth's crust change.
Does density depend on how much sample you use?
Density is independent of the amount of material in a sample. A sample of a homogeneous substance used to find the density can have any volume. If a cm3 of the substance weighs 8.1 grams, then 10 cm3 will weigh 81.0 grams.We might consider water in a glass or bottle as an example. A small sample will have a given weight (mass) because water has a given density. Ten times that sample volume will have ten times the mass of that volume of water. The density of water does not change if we examine water in a small glass and another sample of the same water in a gallon jug.
Do they give you a shot in the testicles for a football physical?
No, but they might examine your testicles.
How might you identify whether a mineral sample might be lodestone?
sniffing butts.XD
Does well water have a high alkalinity?
It might or it might not. Find out by testing it with a 'pool kit' or taking a sample to a lab for proper analysis. -If you drink it this is essential.It might or it might not. Find out by testing it with a 'pool kit' or taking a sample to a lab for proper analysis. -If you drink it this is essential.
