Blue Ridge versus the Valley and Ridge Our field trip started on a sunny day from the Emory and Henry Campus which is located within the Valley and Ridge province. We went to two stops, both in the Valley and Ridge on private properties to identify the rocks in this region. The two provinces of Blue Ridge and the Valley and Ridge are adjacent to one another but are composed of different rocks types and minerals. The first stop was located off of Aikman Drive, in Glade Spring on a cow pasture of a faculty member of the school. There was rolling hills that included many variations of limestone. I came to the conclusion of this after inspecting many areas on the property. Sedimentary rocks are rocks that have been preexisting, that have been weathered, eroded, transported, and deposited and lithified. These rocks were all varying shades of grey, some with more visible crystals than others and they all reacted with the chemical calcium carbonate. The reason they reacted is due to the fact they have a large amount of calcium within the rocks. The rocks located in the connocheagua formation were dated to be around 542 Million years. At this …show more content…
Both field trips to Whitetop Mountain and Green Cove are located in the Blue Ridge province. When examining the rocks in that area the majority had been transferred or deposited from somewhere else, such as the conglomerate rocks and the Unicoi formation. Around 570 million years ago the formations such as the Konnarock and Unicoi they were depositing rocks/minerals such as: diamictite, siltstone, basalts and conglomerates glacially. After being deposited they proceeded to be, weathered, eroded, transferred and possibly compacted, or chemically changed such as dissolute, oxidized, hydrolyzed, or hydrated. After this process the rock could have been combined with many other minerals and rocks transforming it into another type of
The shelf-edge includes carbonate-to-clastic facies transition and tectonic uplift and erosion of the carbonates followed by deposition of the clastics. The Saint Peter Sandstone is a well-sorted, almost pure quartz arenite deposited during a major mid-Ordovician low stand. Clastics spread across an exposed carbonate platform by transportation. This is shown by the well-rounded, frosted texture of the quartz grains.
...e morphed it into the quartzite that is seen surrounding the butte (4). Rocks that undergo this process are called metamorphic rock, which is the same as the rock seen years ago by dinosaurs and other extinct creatures. The quartzite rocks were formerly seafloor sediment that was forced upwards, and then surrounded by lava basalt flows. Once erupted through fissures and floods through out most of the area, lava flow eventually created enough basalt to form a thickness of about 1.8 kilometers (1). All of this basalt flow eventually led to the covering of most mountains, leaving the buttes uncovered. The igneous lava flows and loess is reasons that the Palouse consists of such sprawling hills, and rich soil for farming (2). In result of the lava flows, the Precambrian rock Quartzite was formed. And lastly covered by the glacial loess, which were carried by the wind.
The emerald jewel of Brooklyn, Prospect Park is often called the borough’s backyard and has been a serene and idyllic retreat for Brooklynites for well over a century now. In fact, the park recently celebrated its 150th anniversary with great fanfare, attesting its historic importance and role it’s played in city life for generations. Few people, however, know the true history of the park, such as its connection to Central Park and the role it played in the development of Brooklyn real estate in the late 19th century. To that end, here’s a quick look at the hidden history of Prospect Park and the key role it’s played in the city’s history over the years.
The coastal belt of the Franciscan Complex is composed of the youngest and least deformed units and makes up the western quarter of all Franciscan rocks. The rocks of the coastal belt are composed of arkosic sandstones, andesitic graywackes, and quartzofeldspathic graywackes interbedded with radiolarian chert (turbidite deposits) (Blake and Jones, 1981). These sedimentary rocks suggest a depositional environment of deep-sea fan systems with both oceanic and continental provenance. Parts of the belt show evidence of later metamorphism, principally due to subduction. Low-grade blueschist mineral facies are indicated by the presence of minerals such as laumonite and prehnite-pumpellyite (Blake and Jones, 1981). All rock units show evidence of thrust (imbricate) faulting due to the compressional forces of subduction. Ages of the coastal belt run from as little as 40 Ma (Eocene) to as old as 100 Ma (middle Cretaceous).
This sedimentary rock has hardened over the many years with sand shells, small pebbles, grains of sand and rocks of various sizes. In comparison to our 4.5 billion year old Earth, these sand shells might as well be brand new, when in reality they could be up to 1,000 years old. If the sandstone were to be replaced with calcite it would completely change the subclass of rock, it would then be chemical & organic limestone. The variation in sand stone is due to different rates of deposition and change in patterns of the sediment movement (Mc Knight, p. 384). These tightly compacted varying stones and shells will be weathered away by wind and waves over time and could eventually be reduced to a rock the size of your hand.
Froede, Carl R. “Stone Mountain Georgia: A Creation Geologist's Perspective.” CRS Quartely 31, no. 4 (March 1995): 6.
...ified rocks are usually inclined due to the structure folding and faulting because of the Paleozoic rock. (Adams, Butts, 23). Charles Butts states, “In its general relations the Paleozoic area of Alabama falls into the large geographic division of the eastern United States known as the Appalachian Highlands which extends from the Coastal Plain on the east to the Interior Lowlands of the Mississippi Valley region on the west.” (Adams, Butts, 43)
Morton, J. W. (n.d.). Metamorphosed melange terrane in the eastern piedmont of north carolina. Retrieved from http://geology.geoscienceworld.org/content/14/7/551.abstract
Blue Buffalo has many varieties of foods. They carry puppy food, adult dog food, and senior dog food. They even have dry dog food, wet dog food, and treats. Blue Buffalo even offers different products like BLUE Life Protection Formula, BLUE Freedom, BLUE Basics, BLUE Wilderness, BLUE Earth's Essentials, and BLUE Natural Veterinary Diet. Dog food is not the only product that Blue Buffalo carries, it offers many different foods and other products for cats (Bishop, NP).
Blue Division , the Spanish unit of volunteers who left for Russia during the Second World War to fight communism. Villains and heroes for each other , what is certain is that , in the light of history, these soldiers staged some unusual events such as walking 1,000 kilometers in a few weeks for battle . However , we must go back a few years back in history to understand the causes of formation of the Blue Division . It all began with the invasion of the U.R.S.S by Hitler 's Nazi Germany . The mobilization , whichwas called "Operation Barbarossa " began June 22 , 1941. That same day , the Germans decided it was time charged the favor they had given Franco in the Civil War
The Don Valley Brickwork consists of many different layers of geological deposits, allowing us to observe and have a better understanding of how the sediments we see today are formed. The most bottom layer in the Brickworks are from the Georgian Bay Formation, and consists of grey- shale bedrocks. Fossils are often found in this layer and it is estimated that this deposit of sediments is around 445 million years old. Above the bedrocks is a thin layer of grey clay sand and gavels left behind by the Illinoian Glacier. This layer is called the York Till and occurred around 135,000 years ago. The next layer consists of a sandy deposit called the Don Formation, which is formed by the Sangamonian Interglacial Stage. Many plant and animal fossils are found in this layer due to warmer climate around 120,000 years ago. Above it lies the Scarborough Formation, which consist of clay and sand. This sediment likely occurred 115 - 106,000 years ago. The next layer above is the Poetry Road Formation, and consist of sand and gravel. This layer is likely formed during the early Wisconsin glacial substage around 106- 75,000 years ago. Higher is the Sunnybrook Drift which was formed 60 – 75,000 years ago. And on the surface, is the Halton Till, which was left behind by the final push of the Wisconsin Glacier.
Soon after the sea reached longer distance westward and the sandy tidal deposits were converted to deep water deposits. Mancos Shale is the name given to represent these deposits, which are comprised of organic material and small particulates. Another interesting fact to note is that this type of sediment consists of fossils. These remains can include prehistoric shell fish, shark teeth, and many other types of organisms. The hills seen at the foundation of the mesa in the Montezuma Valley are comprised of gray
Staurolite is easy to spot amongst other stones – it has a very distinct, cross like shape, which was created by nature as it developed. It can be red, brown, almost black, or opaque, and sometimes has a white streak in it. It’s comprised of iron, aluminum and silicon: Fe2+2Al9O6(SiO4)4(O,OH)2 . It forms when shale is changed due to the earths high pressure temperature and conditions where it’s found. Speaking of where it’s found . . . one of its most productive places is in Patrick County, Virginia. It’s so prominent there that the state named a state park after it: Fairy Stone State Park (named after the folklore and legends that surround the stone, which I will get to shortly). It is also very abundant in Fannin County, Georgia.
This article incorporates public domain material from the United States Geological Survey document: T.J. Stohlgren. "Rocky Mountains".
Thousands of years ago when sea levels dropped over years at the Southern end of Muriwai, the sedimentary rock and sandstone was exposed to the air. Rock from volcanic activity mixed with the sedimentary rock; this is called Breccia -- a mixture of all rock. An example of this is at Maori Bay.