Article Evaluation - Brevard Fault
editEvaluating Content
editThe article is currently composed of two relevant sentences, with nothing distracting. None of the information is not out of date, but a lot of information can be added. We can add: geological history of the fault, the history of its discovery, and what questions are still to be answered in relation to the fault. The article currently does not have any images, but does have a relevant bibliography section and good references. The article does link to other Wikipedia articles for related topics and we can expand on this as we add more content. Overall the scientific information is presented clearly, accurately, and without jargon. The only change I currently see that could be made is, “... metro north Atlanta…” could be written as “...north metro Atlanta…” for better flow, but otherwise the word choice is very clear and concise.
Evaluating Tone
editThe article is in a neutral tone and is not biased. The article is two sentences, so there are viewpoints that are underrepresented as no viewpoints are mentioned.
Evaluating Sources
editOverall, the citations are relevant and support the information in the article. I did notice that some of the ISBN links in the bibliography section seem to be incorrect linked. However, more importantly, the doi links are working properly. Each fact referenced is marked with an appropriate reliable reference. Both references come from neutral sources, the Geological Society of America and the Geological Society of London.
Evaluating Talk Page
editThe talk page is very lacking as it only has a comment from my professor stating that the topic is important in southeastern US geology and will have more links to other Wiki pages. Therefore, the talk page is related to the topic, but no conversation has occurred. It is a stub article, but is not a high issue article with much foot traffic. The article does not appear to be part of any other WikiProjects besides our class's ongoing project.
Brevard Fault Draft
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The Brevard Fault Zone is a 700-km[1] long and several km-wide thrust fault that extends from the North Carolina-Virginia border, runs through the north metro Atlanta area, and ends near Montgomery, Alabama. It is an important Paleozoic era feature in the uplift of the Appalachian Mountains.[2]
Discovery
editArthur Keith from the United States Geological Survey first identified an exposed segment of the Brevard Fault in 1905,[3] believing it to be a syncline. In 1932, Anna Jonas Stose’s used local petrology to identify the site as a thrust fault.[4] Stose, the first to trace the fault, is also credited with identifying that the rocks in the area must have been formed through deformation[5], placing the Brevard Fault in a regional perspective.[3] Using modern methods of seismic reflection and high-resolution profiling, geologists have since discovered that the Brevard Fault Zone has undergone both thrust and strike-slip movement.[6]
Geology
editThe Brevard Fault Zone is a part of a much larger system of faults at the base of the Appalachian thrust sheet[1] that played a key role in uplifting the Appalachian Mountains. However, the extent of its role remains uncertain because most of the fault is buried beneath Quaternary sediment.[7] Many studies of the fault come from Grandfather Mountain in the Linville Fall Quadrangle[8], which contains the exposed region that was first discovered by Arthur Keith. However, this region is only 1-3 km of its 700 km length.[7]
The Brevard Fault experienced multiple phases of deformation and minimal stratigraphic displacement.[3] The Brevard Fault Zone contains diverse lithologies, but it is primarily composed of mylonitic metagraywacke, schist, amphibolite, and gneiss[9] that underwent metamorphism 350-360 million years ago.[1] The Fault Zone is characterized by ductile behavior as indicated by the widespread presence of mylonitic and phyllonitic rocks.[1]
References
edit- ^ a b c d Vauchez, Alain (1987). "Brevard fault zone, southern Appalachians: A medium-angle, dextral, Alleghanian shear zone". Geology. 15 (7): 669–672. doi:10.1130/0091-7613(1987)152.0.CO;2. ISSN 0091-7613.
- ^ Hatcher, Robert D. (2001). "Rheological partitioning during multiple reactivation of the Palaeozoic Brevard Fault Zone, Southern Appalachians, USA". Geological Society Special Publication. 186 (1): 257–271. doi:10.1144/GSL.SP.2001.186.01.15.
- ^ a b c Bobyarchick, Andy (1999). "The history of investigation of the Brevard fault zone and evolving concepts in tectonics". Southeastern Geology. 38 (3): 223–238.
- ^ Dietrich, R. V. (1974). "Memorial to Anna I. Jonas Stose" (PDF). Geological Society of America.
{{cite web}}: CS1 maint: url-status (link) - ^ Jonas, Anna Isabel (1932). "Structure of the metamorphic belt of the southern Appalachians". American Journal of Science. s5-24 (141): 228–243. doi:10.2475/ajs.s5-24.141.228. ISSN 0002-9599.
- ^ Gore, Pamela J. W.; Witherspoon, William D. (2013). Roadside Geology of Georgia. Missoula, Montana: Mountain Press Publishing Company. p. 187. ISBN 978-0-87842-602-7. OCLC 872634030.
- ^ a b Hatcher, Robert D.; Huebner, Matthew T.; Rehrer, Justin R.; Acker, Louis L.; Fullagar, Paul D.; Liu, Angang; Goad, Patricia Lee (2017). "Geologic and kinematic insights from far-traveled horses in the Brevard fault zone, southern Appalachians". Linkages and Feedbacks in Orogenic Systems: Geological Society of America Memoir. 213: 313–351. doi:10.1130/2017.1213(13).
- ^ Reed, Jr., John C. (1964). "Geology of Linville Falls Quadrangle North Carolina" (PDF). Geological Survey Bulletin. 1161-B: B3.
- ^ "Mineral Resources Online Spatial Data". USGS.
{{cite web}}: CS1 maint: url-status (link)
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