This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. April Pre-colonial history[ edit ] Gate of the palace of Ternate Sultanate.
Eventually, the term came to refer to all Ozark Plateau drainage into the Arkansas and Missouri Rivers. An alternative origin for the name "Ozark" relates the French term aux arcs. In the later 17th and early 18th centuries, French cartographers mapped the Arkansas and Mississippi Rivers.
The large, top most arc or bend in this part of the Arkansas River was referred to as the aux arcs—the top or most northern arc in the whole of the lower Arkansas. Travelers arriving by boat would disembark at this top bend of the river to explore the Ozarks; the town of Ozark, Arkansas is located on the north bank at this location.
Other possible derivations include aux arcs meaning "[land] of the arches,"  in reference to the dozens of natural bridges formed by erosion and collapsed caves in the Ozark region. It is even suggested aux arcs is an abbreviation of aux arcs-en-ciel, French for "toward the rainbows," which are a common sight in the mountainous regions.
After the Louisiana Purchase inAmerican travelers in the region referred to various features of the upland areas using the term Ozark, such as Ozark Mountains and Ozark forests.
By the early 20th century, the Ozarks had become a generic and widely used term. Karst features such as springs losing streamssinkholes and caves are common in the limestones of the Springfield Plateau and abundant in the dolostone bedrock of the Salem Plateau and Boston Mountains.
Kept open by periodic fires that limit growth of grasses and forbs in shallow soil, glades are home to collared lizards, tarantulas, scorpions, cacti and other species more typical of the desert southwest.
The Ouachita Mountains to the south rise a few hundred feet higher, but are not geographically associated with the Ozarks. Summits can reach elevations of just over 2, feet m with valleys to 1, feet m deep m to m. Turner Ward Knob is the highest named peak. Located in western Newton County, Arkansasits elevation is 2, feet m.
Nearby, five unnamed peaks have elevations at or slightly above 2, feet m. Drainage is primarily to the White River, with the exception of the Illinois Riveralthough there also is considerable drainage from the south slopes of the Boston Mountains to the Arkansas River.
Although the Springfield formation's surface is primarily Mississippian limestone and chertthe Salem Plateau is older Ordovician dolostones, limestones, and sandstones.
The formations are separated by steep escarpments that dramatically interrupt the rolling hills. Although much of the Springfield Plateau has been denuded of the surface layers of the Boston Mountains, large remnants of these younger layers are present throughout the southern end of the formation, possibly suggesting a peneplain process.
The igneous and volcanic rocks of the Saint Francois Mountains are the exposed remains of a Proterozoic mountain range hundreds of millions of years old. The remaining hills are the exposed portion of an extensive terrane the Spavinaw terrane in part of granitic and rhyolitic rocks dating from to mya that stretches from Ohio to western Oklahoma.
Reef complexes occur in the sedimentary layers surrounding this ancient island. These flanking reefs were points of concentration for later ore -bearing fluids which formed the rich lead - zinc ores that have been and continue to be mined in the area. The igneous and volcanic rocks extend at depth under the relatively thin veneer of Paleozoic sedimentary rocks and form the basal crust of the entire region.
A major unconformity in the region attests that the Ozarks were above sea level for several hundred million years from the time of the volcanism in the Precambrian until the mid- Cambrian with an erosionally produced relief of up to feet. Coral reefs formed around the granite and rhyolite islands in this Cambrian sea.
This carbonate formation, the Bonneterre now mostly dolomiteis exposed around the St.Writing Tips For Economics Research Papers Plamen Nikolov, Harvard University y June 10, 1 General Tips about Writing Style When I read your term papers, I look for your ability to motivate your question using economic.
Snoqualmie Falls is a foot waterfall on the Snoqualmie River about 30 miles east of Seattle on the way to Snoqualmie Pass.
The falls have been for generations a sacred site for the Snoqualmie Tribe and a source of hydraulic power. Draft Version: h00 CAPE TOWN EARTHQUAKES: REVIEW OF THE HISTORICAL RECORD C.J.H. Hartnady * Abstract The earthquake history of Cape Town, identified as a zone of seismic hazard on a midth century global earthquake map, remains .
To begin to think like an economic naturalist means applying principles of economics in making daily life decisions. Prior to taking this class I believe that unconsciously I am already an economic naturalist As an example: I live far from shopping centers, there is always school shopping before school starts.
ABSTRACT. The essay deals with the emergence of the concept of biodiversity and with the rise of conservation biology as a subdiscipline of biology. The economic naturalist writing assignment can be seen as a means of reorientating introductory classes: giving students more opportunities to practice Economics (Hansen, Salemi & Siegfried ).
“Rarely have I been asked to write an essay in an economics subject. I found essay writing to be a particularly effective way for me to .