Hey guys i am doing some homework for my Engineering geology class and i had a question that you might be able to help me with. What are some field investigation techniques. For example i already have coring and that deep hole that they drill to go into. What is the name of that? Thanks for all your help
2007-10-13 09:04:41 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
There is also the recordings from seismographs after controlled explosions, which tell us the depth and nature of the strata below by the reflections of the seismic waves.
Another recent technique is that of a special radar which helps finding ancient buried buildings and other structures down to a certain depth, including underground water.
2007-10-13 09:13:09 · answer #1 · answered by PragmaticAlien 5 · 1⤊ 0⤋
Core samples come from boreholes. In addition to the core sample itself, resistivity, spontaneous potential , nuclear magnetic resonance, radiofrequency, and acoustical data are also recorded in data from sensors sent into the borehole and called "well logs". The fines and fluids brought to the surface with the cutting fluids during the drilling operation are studied and included in "mud logs".
As mentioned by in previous answers, seismic data are also important in field work.
Don't forget about all of the traditional surface geology field investigation techniques. There's still no substitute for going out with a rock hammer and taking samples from outcrops.
2007-10-13 10:20:12 · answer #2 · answered by Now and Then Comes a Thought 6 · 1⤊ 0⤋
I would think you would need to include soil drilling techniques in your answer. Typical techniques include using a hollow-stem auger. Sample types include SPT(standard penetration test), Shelby Tubes, and shear vanes. The "deep hole they drill go into", I am not sure what that is except maybe a type of deep foundation known as a drill pier or cassion.
2007-10-13 10:52:05 · answer #3 · answered by geologist_tim 2 · 0⤊ 0⤋
Ground penetrating radar. Core-sampling. Gravity measurements to construct Bouguer profiles. Water sampling. Seismic surveys. Geiger counters to measure radioactivity. UV light to check minerals for fluorescence. Remote-sensing (satellite and aerial) imagery. Looking at rocks. Measuring outcrops. Surveying features with Brunton compasses and theodolites, or GPS. Chemical analysis with field labs that have GC systems. ID with hand lenses and microscopes.
2007-10-14 05:58:43 · answer #4 · answered by Anonymous · 0⤊ 0⤋
ARE YOU REFERRING TO MOLE HOLE?
2007-10-13 12:25:38 · answer #5 · answered by Loren S 7 · 0⤊ 1⤋