also how do I work out the depth of horizontal strata? I just need the equation. Please.
2007-03-22 13:05:16 · 5 answers · asked by what? 4 in Science & Mathematics ➔ Earth Sciences & Geology
it isn't a printed one with a stratigraphic column, otherwise it would be easy.
2007-03-22 14:25:05 · update #1
The equation is tan (apparent dip) = tan (true dip) x sin (angle between the strike and the cross section line). The strike generally given by the compass bearing, whereas, the dip is the angle below horizontal. The depth of the strata is determined by the apparent angle of two attitudes that point towards one another giving you the depth at the syncline. Hope this helps.
2007-03-24 18:56:53 · answer #1 · answered by Shel 2 · 0⤊ 0⤋
Thank you Jazznsax, I was thinking the exact same thing. I would only add that there might me additional complications, such as multifolded strata, but the simplest answer is usually the correct answer.
To answer the second part of the question, horizontal strata cannot be worked out without other information, such a well data, faulted sections, etc. If you are flying over a plain looking down at flat-lying strata you can only see the top layer.
2007-03-23 00:30:23 · answer #2 · answered by Amphibolite 7 · 2⤊ 0⤋
don't need an equation....you need to construct a cross section perpendicular to the strike, and it needs to be to scale. Then using the scale, you can determine the depth of the folded strata.
If what I just said sounds unfamiliar, you've been missing class and deserve an F on your project.
2007-03-22 23:31:53 · answer #3 · answered by jazznsax 2 · 2⤊ 0⤋
There should be a key somewhere with a scale marking to allow you to work it out, you shouldn't need an equation.
2007-03-22 20:25:49 · answer #4 · answered by Taliesin Pen Beirdd 5 · 0⤊ 0⤋
dont be such a geeky twa t!
2007-03-22 20:08:29 · answer #5 · answered by Anonymous · 0⤊ 2⤋