where are the youngest and oldest rocks found in the ocean?
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The youngest rocks will be found next to Divergent Tectonic Plate Boundries, such as the Mid Atlanitc Ridge, where upwelling mgama is pushing two plates apart.  The oldest rock will be found in subduction zones where one plate is pushed under another and back towards the mantle.
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The Palmer-Pendleton Expedition in 1829-1830 reported a find of fossil described as carbonized wood by James Eights. He was the first US scientist to visit the Anarctic. \n\nIn an expedition from 1892-1893, Captain Carl Larsen found fossilized wood on Seymour Island. They were given to the University of Oslo where they were described as the 'first fossils from Anarctica.'\n\nIn 1902 Swedish geologist Otto Nordenskjold found Jurassic plant fossils at hope Bay. He found more fossil leaves on Seymour Island. Also in a 1901-1902 expedition they found archaeocyathids, described as Cambrian, around 520 years old by Dr. W.T. Gordon in 1920. These became the oldest known fossils from Antarctica known at that time. \n\nThere is an entire book online that describes the history of exploration in the Antarctic: Mountains of Madness: A Scientist's Odyssey in Antarctica (2001)\nJoseph Henry Press (JHP)\n\nIt is located at: http://www.nap.edu/books/0309070775/html/12.html
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1. Pacific Ocean (not discovered, but there)\n2. She only has three siblings, but if you count her it's Ginger.
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The Mid-oceanic ridges are the largest mountain chain on the earth, and in some places they go under continents. The Atlantic Ocean part of this ridge has one section, the Island of Iceland, where the ridge is above the surface of the ocean. The ridge is where the convection of the mantle is rifting the crust, making new oceanic crust in the process. Since the oceanic crust is denser than the continental crust (3.3 g/cc vs. 2.8 g/cc), the oceanic crust "sinks" in relation to the continental crust.  Since the surface of the Earth contains abundant amounts of liquid water, oceanic crust is submerged.
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"Ocean water is  a complex solution of mineral salts and of decayed biologic matter that results from the teeming life in the seas. Most of the ocean's salts were derived from gradual processes such the breaking up of the cooled igneous rocks of the Earth's crust by weathering and erosion, the wearing down of mountains, and the dissolving action of rains and streams which transported their mineral washings to the sea. Some of the ocean's salts have been dissolved from rocks and sediments below its floor. Other sources of salts include the solid and gaseous materials that escaped from the Earth's crust through volcanic vents or that originated in the atmosphere."
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The reponse is related to plate tectonics. The earth crust is composed of a larger number of plates that float, very slowly of course, over the liquid interior. Continents therefore move relative to each other. When two plates meet, generally one moves under the other and it is here that we find mountains and volcanoes.\n\nWhat relation with oceans? Well, between some of the plates there is an upwelling of new magma, new crust. This is for instance the case in the middle of the Atlantic Ocean. The new crust needs room and pushes the plates on the left and right away: the Americas are moving to the west, while Europe and Africa are moving to the east. \n\nOceans (ah, at last!) are watermasses in which such upwelling of fresh crust takes place. An ocean therefore is partly in two or more different plates. On the other hand, seas are bodies of water that are on one continental plate only, or on two plates were no new crust is formed.\n\nHere is a pictures of the different continental plates:\n http://en.wikipedia.org/wiki/Image:Plates_tect2_en.svg
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Structures resembling remarkably preserved bacterial and cyanobacterial microfossils from ~3,465-million-year-old Apex cherts of the Warrawoona Group in Western Australia currently provide the oldest morphological evidence for life on Earth and have been taken to support an early beginning for oxygen-producing photosynthesis. Eleven species of filamentous prokaryote, distinguished by shape and geometry, have been put forward as meeting the criteria required of authentic Archaean microfossils, and contrast with other microfossils dismissed as either unreliable or unreproducible. These structures are nearly a billion years older than putative cyanobacterial biomarkers, genomic arguments for cyanobacteria, and oxygenic atmosphere and any comparable diverse suite of microfossils. Here we report new research on the type and re-collected material, involving mapping, optical and electron microscopy, digital image analysis, micro-Raman spectroscopy and other geochemical techniques. We reinterpret the purported microfossil-like structure as secondary artefacts formed from amorphous graphite within multiple generations of metalliferous hydrothermal vein chert and volcanic glass. Although there is no support for primary biological morphology, a Fischer-Tropsch-type synthesis of carbon compounds and carbon isotopic fractionation is inferred for one of the oldest known hydrothermal systems on Earth.
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continents \n\nThe large parts of the surface of the Earth that rise above sea level. The seven major continents are Africa, Antarctica, Asia, Australia, Europe, North America, and South America. \n\n\nContinents are made from the lightest rocks in the Earth. Some of these are also the oldest known rocks on Earth, with an age of 3.5 billion years, measured by radioactive dating.\nAccording to the theory of plate tectonics, continents move along piggy-back on the tectonic plates like rafts floating on water.\n\ntry this link for the best information =\nhttp://en.wikipedia.org/wiki/Continent
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When lava (melted rock) is extruded onto the surface of the Earth, it forms new igneous rock. Lava doesn't last long on the Earth's surface before it cools. \n\nIs your question actually concerning the oldest igneous rocks?
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You've been given exhaustive lists, copied directly from websites without giving proper citation I imagine. \n\nHere is how to think about this question so that you can recall and understand the answer, without just memorizing a bunch of rock names.\n\nUse the rock cycle. Igneous rocks are of two groups, those formed within the earth and those formed by volcanism.  The volcanic rocks will show signs of that volcanism and will be things like black columnar basalt found in massive flows. Obsidian (volcanic glass) that flowed as liquid, scoria and pumice which are like foam because the dissolved gases expanded and made them bubble as they hardened. The other igneous group formed under the earth's surface, and includes things like granite where you can see the crystals that formed as it cooled and solidified. \n\nSedimentary rocks are also in two major informal groups (and a minor third). The first group of sedimentary rocks is clastics. These are formed by weathering, transport and deposition. Weatherings breaks down rocks like igneous, metamorphic and even sedimentary rocks and transport by wind, water, or gravity deposits these rocks as accumulations of clasts, (thus clastics). They become sandstone, shale, and conglomerate. The other major sedimentary group is carbonates. These rocks are 'born' because they are formed by living things. Ocean environments (and lakes too) have many organisms that make shells, corals that make reefs, and algae that make fine carbonate sediments (known as carbonate mud). Even bacteria get into the act helping to precipitate carbonates in many ocean environments. The third group of sedimentary rocks is those that are dissolved by water and deposited by evaporation or precipitation. These include gypsum, halite, sylvite, and many more. \n\nMetamorphic rocks all start life as one of the previous groups. You can metamorphose a granite into a granitic gneiss by burial, pressure and heat. You can metamorphose a basalt into an amphibolite. You can make limestone into marble. Sandstone turns into quartzite.\n\nRemember the rock cycle, associate the rocks as they move through it, and you won't have trouble remembering examples of rock types. Also don’t get tripped up by the difference between a mineral and a rock. Geologists sometimes use the two terms identically, but there is a formal difference between a rock (which is an impure mixture) and a mineral that is chemically consistent.
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There are Five oceans: Atlantic Ocean, Pacific Ocean, Glacial Artic Ocean, Glacial Antartic Ocean, Indian Ocean ...
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Scientists say that the Earth is about 4.5 billion years old. The oldest rocks that have been found are 3.8-3.9 billion years old. They actually think the Earth is 4.55 billion years old to be specific. Just to let you know i got it off  a website.
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Oceanic crust is generally thinner since it is closer to the mantle, more dense since it is composed of mainly mafic basaltic rocks (have more ferromagnesians in them, i.e. iron) , and younger than continental crust since it is in a constant state of change near subduction zones and gets reformed sooner and more often then continental crust.
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Here, try this:\n\nhttp://www.rocks-and-minerals.com/\n\nCheers.
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The Arctic Ocean, with an area of 9,485,000 sq km (3,662,000 sq miles), is the smallest ocean. It has a maximum depth of 5,450 m (17,880 ft).
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Sea Floor Spreading Evidence- age of land and seamounts are youngest closest to a divergeant boundary.  Magnetic anomalies are the same on both sides of the boundary.\n\nIsopotic Dating- allows geologists to correlate rocks based on radioactive isotopes present.  The ratio of radiogenic daughter isotopes to the unstable parent isotope determin how long the parent has been incorporated in that mineral.\n\nMagnetic Pole Reversals-a thing called remanent magnetism is a component of a rock.  when the rock formed it shows where the earth's magnetic field was at the time.  Measurement of the orientation by inclination angle (latitude) and declination angle (longitute) gives clues to the paleolatitude of the sample when formed.
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The Sandwich Islands is the name of the chain Also refered to as The Hawaiian Archipelago Or simply the Hawaiian Islands\n\nHawaii, Kahoolawe, Maui, Lanai, Molokai, Oahu, Kauai, and Niihau. The Northwestern Hawaiian Islands, other than Midway, are administratively part of Hawaii.\n\nThe oldest Island is Kure where you find the oldest volcano, Suiko (central) 64.7 Million years old.\n\nThe youngest Island is "The Big Island" of Hawaii, Kilauea volcano is 0.4 Million years old  Mauna Kea is 0.375 Years old