Stone mountain Park Granite RockBuilt atmosphere InteriorThe rock Mountain rock development is a majestic component of the horizon and also dominant together a component of the environment. Rock Mountain Granite rock has actually a story that dates earlier 300 million years. The rock mountain has attracted humans and animals alike, who look for the nature of the mountain. The mineralogy or the granite consists quartz, alkali feldspar. Plagioclase feldspar, and also biotite and also muscovite mica.Sheets of granite parallel come the surface ar of the mountain appear to flake off. The process occurs together the rock is shave off over numerous years. The surface removal of stone releases pressure on the hardening granite.
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The substantial exposed granite rock originated indigenous a pluton in ~ the planet surface in the mantle. The stress and anxiety from movement of the bordering materials and weight of above rock structure reasons the pluton press to increase. The pressure forces magma to push outward and also buoyancy reason it to penetrate the top crust and intruded above the surface to kind this igneous granite rock. Quick cooling created the outer crust and also slower cooling crystallized the core and solidified the minerals. Pluton: intrusive igneous rock the crystallized indigenous magma. Cooling progressively beneath the earth surface. Plutons encompass dykes, batholiths, stocks, laccoliths, otoliths and also other igneous bodies.Pluton Intrusion Diagram
Stone mountain rises approximately 750 ft. Over the surrounding countryside. The volume one-half billion cubic feet (Watson, 1902) and the area space over 583 acres. Just the reminder of the granite body is over ground. The intrusion started at a depth of 10 mi. Listed below the surface more than 15 million year ago. Weathering occurred and also slowly exposed the layers of overlying rock.Alligator earlier Formation
It deserve to be uncovered in the sink of stone Mountain State Park. Also, the development is existing as xenoliths.The picture is a xenolith situated on the dome’s north next of the trail.Exfoliation Slabs
Exfoliation slabs space visible, present layers of rocks ~ above the challenge of the mountain. This procedure is when pressure forces a fragment to flake off. The fragment shaves the surface and reduces pressure and enables expansion.Pegmatite Intrusion
Pegmatite – The stone Mountain Granite cooled faster on the external than top top the inside, and the new magma found its means into fractures in the cooling granite. The mineralized fractures are referred to as dikes classified according to the kind of rock that has actually filled the fracture and the mineral serial size.
Weathering Pits – round holes and depressions in the granite, water plus organic mountain dissolve the rock. Weathering transforms physical or chemical rock properties. Fragmented rock, ice, rain. Minerals reaction and change the composition
Xenoliths – exposed, pieces of absent engulfed by the pluton as soon as it to be still magma. The absent enclosed is that a different type and is older than the granite. The Maltin rock was forced into magma v cracks and dykes in the granite. Xenoliths represent a geological event in time.Joints and Cracks
Old absent QuarryThe old rock quarry is easily accessible from the trail. Si structures are visible, block of granite removed for constructed environment applications.
Quarrying minerals such as biotite, tourmaline, quartz, and also feldsparDiabase – dark colored rock fine grain, affluent in iron and magnesium the cross-cuts the granite. Publication iron due to weathering, one orange color is in the floor from leaching.A subvolcanic rock, also known as a hypabyssal rock, is an intrusive igneous rock the is emplaced in ~ shallow depths within the crust and also has intermediate grain size and often porphyritic texture between that the volcanic and also plutonic rocks. Subvolcanic rocks incorporate diabase (also well-known as dolerite) and porphyry. Common examples that subvolcanic rocks space diabase, quartz-dolerite, micro-granite and also diorite.Trail Map Geologic Evidence
Visiting the Geologic Trail
Rock sample pictures gathered for identificationSpecimen left – biotite, quartz, and feldsparSpecimen appropriate – Feldspar and quartzSpecimen optimal – Pyrite, biotite, quartz, and feldsparSpecimen group – save on computer biotite, tourmaline, quartz, and also feldsparPicture the a pluton
Historic absent Table rock Mountain
Geologic time graph for stone Mountain Georgia. The timeline mirrors the era, geologic period, and the corresponding habitation for that period. The last column defines the occasions that arisen during the geologic period.
Built environment, The stone Mountain rock formation is a majestic part of the horizon and dominant together a component of the environment. Stone Mountain rock has a story the dates earlier 300 million years. The rock mountain has attracted humans and animals alike, who seek the nature of the mountain. The man has actually such a dominant presence in room that the personality of the mountain has been disguised and barricaded. The present park design template promotes the park and also some local background to draw tourist and community. The land use covenant is an excellent it preservation the integrity of the grounds. There is a potential because that mining, dumping, poaching, for this reason the regulation and barriers are functional.Stone mountain Park is the website for this constructed environment description. The park has the real gem, the rock hill that towers over every little thing in that vicinity. The park northeast that Atlanta near 16 miles and available via US-78. The park was constructed in the 1850s as a tourist attraction.The Confederate memorial the the generals was carved during the 1900s. Added amusement and activities encourage tourists and travelers to visit this huge attraction. Sellers sell Activities, refreshments, and also souvenirs. The grounds are maintained by the state and city staff. Maps guide the travellers to the attributes of the park. The park design enables joggers and walkers, picnickers, and bike riding activities to take place on committed paths. The limited travel offers safety and also control of web traffic flow. The park is accessible from every sides. Highway 78 offers an departure to stone Mountain Park. The park is closed; a dues is required to access the park through car. Foot web traffic is free of charge for access. The hrs of procedure are dusk come dawn, seven days every week.
The park attributes a grand artifact; Carving the Confederate generals. Over there is an exhibit of the succession. Train station are collection up because that each state through a tablet containing the background of the event. The station are permanent as an out year ring exhibit. The carving is cleaned and maintained by the park attendants.
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The main users are recreation seekers. The secondary users are recreation dwellers. The largest group to visit the park are occasion participants. The events attract thousands the spectators. The summer events are concerts and also special interest team gatherings. In the winter, the snow operation is the largest draw. There is a cable vehicle to transport world to the height of the mountain. The background operates every season. The park is commercial in its company delivery. The park attempts to accommodate every levels that users. The room utilization is excellent; the task areas room seamlessly divided by function and resources.
Atkins Robert L., Joyce Lisa G. “Geologic overview to stone Mountain Park”, Georgia department of organic Resources, Atlanta, 1980, Web. 3 Apr. 2016, http://epd.georgia.gov/keolistravelservices.com/epd.georgia.gov/files/related_files/site_page/GG4.pdf
Busch, Richard M. “Physical Geology” American Geosciences Institute, 2015, The Web. 3 Apr. 2016
Marshak Stephen, “Essentials that Geology 4th Edition”, W. W. Norton & Company, brand-new York, 2013, The Web. 3 Apr. 2016
Tsembelis, S.J. Kingsbury, K. And Proud, W.G. “The Dynamic nature of the Atlanta rock Mountain Granit, Cavendish Laboratory, Madingley Road, Cambridge, CB3 0HE. The UK, 2003
Stone hill Park website, http://www.stonemountainpark.com/activities rock Mountain Park website” A interactive geologic guide”, n.d. Web. 22 Apr. 2016. Web. 3 Apr. 2016, http://www.ncgeology.com/Stone_Mountain_State_Park/pages stone_mountain_geology_rock_types_fe atures.html