User:Jenniferlight17/sandbox

= Article Evaluation- Continental Rise = Evaluating Content

Everything in this article is relevant to the topic, however, there needs to be more specific content about the continental rise. Almost half of the article describes related structures such as the abyssal plain and submarine fans. While this information is relevant because it relates to the topic, it seems out of place because such a large portion of the article is dedicated to it. The sentence about deep sea marine life in the abyssal plain also seems a but distracting and out of place. No information is out of date. There is missing information about the continental rise that the article alludes to, but doesn't fully explain. For example, why is the contenental rise so unique, and why is it studied so extensively? The article is easy to read, with information presented clearly and without jargon. The article links to other wikipedia articles about the continental slope, the abyssal plain, sediments, canyons, and submarine fans.

Evaluating Tone

The article is neutral and does not contain any claims that favor a particular position. There are no viewpoints that are over/underrepresented.

Evaluating Sources

The article only cites 2 sources, both scientific books published by Springer publishing. The first source, The Geology of Continental Margins does not contain a link or ISBN number. It is only cited once to substantiate a claim about the accumulation of sediments at the continental rise. There is no free version of the ebook available online. The second source contains a link to an ISBN number, which can be used to access a limited copy of the book on Google Books. This book may be cited incorrectly. The citation given names the book as Submarine Fans and Their Channels, Levees, and Lobes, but the link pulls up a book titled ''Submarine Geomorphology. T''his book is also cited just once, after a sentence on the formation of submarine fans. Because both of these sources are scientific books, they seem like appropriate and reliable references. Both books support the claims made in the article and do not have any noticable biases. Most of the facts in this article are missing citations.

Evaluating Talk Page

One post on the talk page claims that the continental rise and abyssal plain are incorrectly labeled in the article's diagram. Another comment is asking the difference between the continental slope and rise, which is not clarified in the article. This article is rated as Stub-Class and is part of Wikiproject Geology.

= Article Draft =

The continental rise is a low-relief zone of accumulated sediments that lies between the continental slope and the abyssal plain. The continental rise is a major part of the continental margin, covering around ten percent of the ocean floor.

Formation processes
The continental rise is formed from sediment deposition, primarily by the process of mass wasting, the gravity-driven downhill motion of sand and other sediments. The continental rise forms from mergers of alluvial or sedimentary fans, shallow cone-shaped reliefs at the base of submarine canyons in the continental slope. Mass wasting can occur gradually or in large sudden events. Large mass wasting occurrences are often triggered by sudden events such as earthquakes or oversteepening of the continental slope. More gradual accumulation of sediments occurs when hemipelagic sediments suspended in the ocean slowly settle to the ocean floor.

Because the continental rise lies below the continental slope and is formed from sediment deposition, it has a very gentle slope, usually ranging from 1:50 to 1:500. As the continental rise extends seaward, the layers of sediment thin and the rise merges with the abyssal plain, typically forming a slope of around 1:1000. The abyssal plain lies on top of basaltic oceanic crust and covers the majority of the seafloor.

Bengal Fan
Alluvial fans such as the Bengal Fan, which stretches for 3000 km, make up one of the largest sedimentary structures in the world. [add more here]

Economic resources
Many alluvial fans also contain critical oil and natural gas reservoirs. [add more here]