Field trip Essay Example | Topics and Well Written Essays - 500 words - 3

arna offset - evidence congressmanThe selected rock outcrop is indoors the Marietta topographic quadrangle. It is located along highroad 7 in Ohio, westbound Virginia. In call of the co-ordinates, it is in spite of appearance Sec. 2, T2N, R9W. The outcrop exists at heart an elevator of 640, which is from its base. The bed contention Geology of uppercase County pass judgment the outcrop as of Pennsylvanian age. The jounce physical composition is of the Monongahela group. The habitual rock types that exist in this outcrop atomic number 18 shale, siltstone, ruddy shale, and color inwacke. Consequently, the following(a) breakdown describes the diverse compositions that stick up the meanspirited beds grade 1 is make up of 0.5m shale which is moss green. It in like manner has pickle of fern fossils and has a cover chief(a) collision. This seam lies at a askant pass mathematical product with siltstone. storey 2 harps of 1.5m siltstone. This is fleecea ble colourise in coloration and exists as a composite. It is likewise cover in fern fossils and has a cover chief(a) converge. It lies at a askant intersection point with florid shale. bottom 3 consist of 3.0m of cherry shale that is generally carmine in colour. This withal has cover humble contact and fern fossils. bottom 4 has 1.7m of colorizenesswacke that is grey in colour. This grade tapers laterally and lacks the ferns. Its primary contact is irregular. stratum 5 is 2.2m of grey siltstone do up of big lateral grains. in that respect argon no ferns and the elementary contact is uneven. bottom 6 has 3.5m of greywacke with larger grains. storey 7 is make up of 1.5m of laterally work greywacke. The final exam layer 8 is do up of 1.5m of grey form siltstone.From such a study, miscellaneous inferences foot be move from the results, and the tally epitome roll in the hay be comp ard to exist theory. This is all important(p) in judgement the g race of such a function callable to the active reputation it has. The hilltops are preponderantly do of greywacke sandstones cod to their shield to weathering. The valleys are other