ipl-logo

Catalina Shist Case Study

899 Words4 Pages

1. What is subduction and how did it plus faulting lead to the formation of Catalina’s island?


Blueschist, greenschist, and amphibolite rocks are typically found in this order from top to bottom. Amphibolite is found at more intense pressures and temperatures than schists are found due to these metamorphic rocks being made from sediments that get subducted back down into the mantle. The unique Catalina Schist was formed when these layers of rock in the Farallon plate became subducted underneath the North American plate and eventually becoming “stuck.” This phenomenon is called a thermally inverted pattern, in which the subducting plate becomes folded and the layers of rock bend. This bend led to the Catalina Schist which is where you will find amphibolite on top of the green, …show more content…

Describe or diagram the lifecycle of a kelp.

Life cycle of kelp can differ between perennial kelp and annual kelp. Yet both types of kelp live a two-stage life cycle. Their haploid phase begins when mature organisms release spores and then germinate to become male or female gametophytes. Their sexual reproduction then results in the diploid sporophyte stage, in which the male sperm and the female egg have fertilized. After the kelp has matures, it will then release spores and the life cycle begins again.

2.b. Why are otters referred to as a “keystone predator” in kelp forest ecosystems? Sea otters play crucial roles in their kelp forest ecosystems because their lifestyles maintain their habitat. Sea otters eat 25-30% of their body weight per day, which can be up to 25 lbs. of food per day for some large male otters. Their diet being mainly sea urchins, the sea otters keep the urchin population under control which allows for other life within the kelp ecosystem to survive and create a balanced ecosystem. Without the sea otters in a kelp ecosystem, the sea urchins can take over and disrupt the ecosystem by killing out some algae species and some fish which live in the

Show More
Related

Hell's Half Acre: A Case Study

722 Words | 3 Pages

The rocks are pebble to cobble sized basalt fragments. The samples collected ranged from 50mm to 120 mm. The rocks are angular. They have a gray, very fine ground mass. Fine plagioclase feldspars are visible throughout the ground mass and sparkle in the sunlight.

Read More

Manchester State Park Case Study

511 Words | 3 Pages

The poorly sorted nature of the conglomerates, considered with the inclusion of wood fragments in the older conglomerate members and the graded sandstones and mudstones throughout the formation suggest deposition occurred through successions of debris flows. Presence of volcanics in the lithic fragments further indicate volcanic activity in the process of sedimentation as well—as debris flows associated with lahars are the likely source of the slope failures. Deposition environment was moderate to deep marine, as mudstone deposits require low energy depositional environment, but the style of sedimentation indicate deposition was not on a continental shelf. This is further supported by inclusion of the large overturned clast from an older member within the formation. Cross-bedding, graded bedding, and scouring surfaces provide 3 lines of evidence establishing the northern contact of the formation as the original upward oriented surface.

Read More

Idaho Springs Formation Report

1102 Words | 5 Pages

Hematite, quartz, and clay are the mineral in rocks. It was deposited in beach from environment. The event recorded here is a transgression of sea level (intercontinental seaway). Benton Shale Formation was our next stop. Its 90 million years old.

Read More

Nt1310 Unit 1 Assignment

624 Words | 3 Pages

Rocks are heated underneath the crust then pushed out through a volcano or the oceanic plate. The rock substance that becomes the crust will deposit back underneath the crust. All of the process can be credited to the dynamic nature of Earth.

Read More

Leakey Site Location

1093 Words | 5 Pages

Site Location The location of our site is in Bartow County, Georgia. This site is best known as the Leakey Site. It was an archaeological resource survey of proposed widening along state route 61. The two site locations we decided to focus our research on are 9BR663 and 9BR665.

Read More

Chano Canyon Summary

178 Words | 1 Pages

The article states three competting theories about Chano Canyon and provides three theories. However, the professor explains that these theories are not correct and refutes each of the author 's reasons. First, the reading claims that the Chaco structure were purely residental, with each housing handred of people. The professor refutes this point by saying that this theiry can not be correct.

Read More

Rescue In The Rainforest By Mackenzie Carro: Article Analysis

666 Words | 3 Pages

The first reason why sloths and their homes should be protected is because they serve as prey to their predators. Mackenzie

Read More

Hawaiian Monk Seal Research Paper

503 Words | 3 Pages

The monk seals are a rare tropical animal that lives on the Caribbean and the Hawaiian Islands. Monk seals live in warm waters and spend about two-thirds of their time at sea. However, they also spend time on land as they breed and carry-out their “pups.” Coral reefs provide the seal as a great habitat for them to dive, swim, and for food such as fish. It may seem that monk seals spend most of their time at sea, but they also love to rest on shore on the beaches.

Read More

Barrier Island Case Study

549 Words | 3 Pages

It was conducted in order learn how to better manage the barriers in response to growing development in coastal areas. In response to previous research, it was hypothesized that some barrier islands originally formed offshore and were relocated to their present locations through wash over. The study was conducted by examining stratigraphic sections for nine barrier island transects as well as stratigraphic data from previous studies. Over 200 vibracores were examined for the study total.

Read More

The Hawaiian Monk Seal

1771 Words | 8 Pages

The Hawaiian monk seal, or Monachus schauinslandi, was one of the original species to be placed under the Endangered Species Act that was enacted in 1973. As of 2010, the population of the monk seal is approximately 1,100, with an annual decrease of approximately 4.5%. The Hawaiian monk seal is primarily found on the Northwestern Hawaiian Islands that are made up of coral reef atolls, seamounts, banks, and shoals. This is due to the fact that the monk seals primarily forage on the barrier reefs of the atolls, on submerged reefs, and on banks further from the atolls (Curtice et al, 2011). The monk seals primarily like to look for food on the surface of the ocean floor and will search for food in depths up to 500 meters.

Read More

Hawaiian Island Plumes

971 Words | 4 Pages

Different studies have showed that the mantle plumes and the hot spots have different shapes and size. An evidence that we have that backs up the hot spots and plumes is the Hawaiian Island. The Hawaiian Island it said that its formed right in the middle of an Ocean, the Pacific Ocean, during the time that the Hawaiian Island had formed, there was a lot of studies to do because scientist had no idea of how it could be possible for an island to form in the middle of a plate away from its boundaries. A scientist, Wilson, “suggested in the 1960’s that the convection in the underling mantle produced what we now know as a hot spot, and that the islands arose from the magma poking through the sea flow as the plate moved over the hot spot.” This Hawaiian Island Chain is one of the proofs that we have that show the plate movements over the hot spots where also earthquakes help a lot in the hot spot formation.

Read More

Comparing The Phylogeny Of The Sea Otter

922 Words | 4 Pages

The Genus and Species for Marine otter are Genus: Lontra Species: Felina What threats do the Sea Otter and Marine otter face as species? Both creatures are on the peril list. This is because of oil contamination and additionally poaching and the inconveniences from living space obliteration. Numerous Sea and marine otters are caught for hide and furthermore confront dangers of angling nets.

Read More

River Otter Essay

1401 Words | 6 Pages

River Otter Though not commonly observed in the wild, the river otter, Lutra canadensis, is a fairly familiar animal to most people. Its original range covered most of North America. It is one of the larger of the weasel tribe, its recorded weights running over twenty pounds, though I do not have at hand weights of the large Alaskan sub¬species. The otter is agile, fluid in its movements as the water that is its favorite element.

Read More

Why Is The Grand Canyon Important To The World

480 Words | 2 Pages

The author said, “one of the rocks found at the bottom of the Grand Canyon is called schist” {West, par.1}. The reason this is important is that there are millions of rocks in the Grand Canyon there to be found and become a new rock in the world. Based on what people read, “another rock, called limestone, is found on the upper rim of the Grand Canyon” {West, par.1}. Rocks are important; they hold the Grand Canyon in place so the whole thing does not crumble into pieces, then no one will see that grand canyon ever again. Rocks are important for the Grand

Read More

Hotspot Theory Essay

1487 Words | 6 Pages

The great heat from this localized hotspot melts the Pacific plate above the hotspot and the spreading seafloor along the plate boundary pushed over the rocky crust. Magma was produced from the melting rock of the Pacific plate. The magma rise through the mantle and the crust as a thin thermal plume because magma is less dense than the solid rock of the plate. It was erupting beneath the ocean to form an active seamount. With the countless eruptions under the sea, the height of seamount keep increase until it breaks the ocean surface and becomes an island volcano.

Read More

More about Catalina Shist Case Study

Related Topics

Open Document