The red indian line ril in central newfoundland is the suture, where the main tract of the iapetus ocean was closed at 452 ma during accretion of the perigondwanan victoria arc with the composite active laurentian margin. His nickname, the piercer, actually meant that he came for a life of mortals in terms of violence. Saturns strange moon iapetus may have been deformed by. In other words, when iapetus decided that ones time had passed, he brought violent death upon him. Sure thats a bit odd, but the strangest feature on iapetus is the equatorial ridge. Geology of great britain introduction and maps by ian west. The iapetus ocean was situated in the southern hemisphere, between the paleocontinents of laurentia, baltica and avalonia. Closure of the ocean, nowadays called the iapetus ocean, was effected by benioff. A history from earliest times encompasses 500 million years, from when the tectonic plates were shifting to form the land mass we recognize today to the referendum and its aftermath the herald alan taylor. The iapetus suture zone isz is a tectonic boundary resulting from the collision between laurentia and avalonia during the earlydevonian 400 million years ago closure of the iapetus ocean. He was the titan god of mortal life, whilst his son, prometheus, was the creator of mankind and his son epimetheus was the creator of other earthly creatures. The iapetus suture, also known as the niarbyl fault on the isle of man, is the separation between the former laurentia and. Iapetus article about iapetus by the free dictionary. Those collisions gave rise to three appalachian orogenies.
The iapetus suture in the british isles volume 126 issue 1 w. The iapetus suture is a major geological fault that lies deep below the earths surface, and was formed when the continents of laurentia and avalonia collided. The great distance from saturns tidal forces and from most of the other moons and ring particles has probably allowed. The geometry of the iapetus suture zone in central ireland. Pdf 835 k pdfplus 868 k laurentiaderived detritus in the badger group of central newfoundland. Mountainbuilding and the end of an ancient ocean beneath. This will give the general background and facilitate understanding of the geology of the south coast. Iapetus suture news newspapers books scholar jstor april 2010 learn how and when to remove this template message. This region contains a fine rock record from all the. Canadian journal of earth sciences nrc research press. Iapetus was photographed by voyager 2 in 1981 and by cassinihuygens in 2004. His name derives from the greek word meaning to pierce usually with a spear. It takes the same amount of time to finish an orbit around.
It represents in part the remains of what was once the iapetus ocean. The late silurian to middevonian dingle basin occupies a central position within the iapetus suture zone of sw ireland. This means that the same side of this moon is always facing saturn. The closure of iapetus involved a complex and protracted collisional history of. This is because one half of the moon is covered in ice and the other side is coated in black, dusty carbon deposits. Skip to main content accessibility help we use cookies to distinguish you from other users and to provide you with a better experience on our websites. The basin is believed to have formed from late silurian times.
Although its radius is about twofifths that of earths moon, its icy composition. Tectonometamorphic evolution along the iapetus suture zone in. The iapetus suture zone isz is a tectonic boundary resulting from the collision between laurentia and avalonia during the earlydevonian 400 million years ago closure of the iapetus. Scotlands southern geographical border coincides, more or less, with one of the most funiapetus ocean damental geological boundaries in britain. Astronomical and physical characteristics of saturn. Iapetus ocean simple english wikipedia, the free encyclopedia. Evidence suggests that this boundary, between the former. The eastern flank of the berkshires east of the contact between hoosac formation and the rowe schist is included in the iapetus suture zone that also includes the rest of the northern appalachian gold belt. The ordovician history of the iapetus ocean in britain. The geological evolution of the british isles during the lower palaeozoic was dominated by the presence of the iapetus ocean. The iapetus suture is one of several major geological faults caused by the collision of several. This falsecolor mosaic shows the entire hemisphere of iapetus acquired by cassini. Iapetus is the thirdlargest moon orbiting saturn, with a diameter of 914 miles 1,471. Jul 21, 2015 sure thats a bit odd, but the strangest feature on iapetus is the equatorial ridge.
The basin is believed to have formed from late silurian times onwards as a product of sinistral transpression along several major faults within this suture zone. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. The iapetus suture, one of the more fundamental geologic boundaries of the british isles, has been located beneath the north sea by deep seismic reflection profiling carried out by the british. Subduction of the iapetus led to its destruction and the collision of. Laurentiaderived detritus in the badger group of central. Iapetus moon simple english wikipedia, the free encyclopedia. The material on the leading edge is thought to be carbonbased, but it is unclear whether it was emitted from the interior of iapetus or was debris from eruptions on other saturnian satellites swept up by iapetus from space. This feature measures 1,300 km long and it makes the moon look like a space walnut.
Pdf iapetus suture located beneath the north sea by birps. On the east it runs through lindisfarne, on the west through the solway firth. Although the timing of the major events in its later history are. On the trace of the iapetus suture in ireland and britain. Terrane geochemistry contrasts across the iapetus suture in. The iapetus suture is a large geological fault that marks the collision zone where the north of ireland and scotland collided with southern ireland, england and wales. Up to then, the vast iapetus ocean had existed between them and over a period of about 200 million years, it gradually closed until collision was complete by about 400 million. Apr 01, 2009 the resulting complexity makes the geological history of this region at once fascinating and perplexing. The iapetus suture in ireland and britain is that line which separates caledonian rocks of the laurentian and avalonian continents. It connects the rostrum to the front part of the dorsal cranidium. It is expressed in the southern uplands of scotland, across the islands of ireland and newfoundland, and into the appalachians of north america. The iapetus suture in the british isles geological magazine. He was the titan god of mortal life, whilst his son, prometheus, was the creator. Evidence suggests that this boundary, between the former avalonian microcontinent to the south and the laurentian continent to the north, skirts the northwestern edge of the island.
This is the iapetus suture figure 1, the trace of a. Early palaeozoic iapetus ocean, south of scotland earthwise. Bulletin of the british museum natural history, geology 7, 654. One reads the chapter beginning with the iapetus suture with the suspicion. Plate tectonic evolution of the southern margin of laurussia in the. Iapetus was the father of atlas in greek mythology, making his an appropriate name for what used to be called the protoatlantic ocean. The most likely possibility is that it marked the line of separation between fragments of the 1 billionyear old rodinia supercontinent, which started to break up in the early neoproterozoic. On the isle of man it is the niarbyl fault, which is an exposed section of the suture. Gold occurrences in massachusetts gold, mining and. Terrane geochemistry contrasts across the iapetus suture. Iapetus, titan god of mortal life span, the piercer greek gods. It is intended to provide introductory information on the geology of great. Known as the iapetus suture, it marks the precise place where the vast continents of laurentia and avalonia collided, having welded the four terranes together.
The iapetus suture, one of the more fundamental geologic boundaries of the british isles, has been located beneath the north sea by deep seismic reflection profiling carried out by the. Neuware iapetus occasionally japetus is the thirdlargest moon of saturn, and eleventh in the solar system, discovered by giovanni domenico cassini in 1671. Hawick a history from the earliest times the first thing to say about alistair moffats latest book is that he means every word of its subtitle. Saturns huge moon iapetus is an alien death star saturns mysterious moon iapetus is an alien death star created by an intelligent extraterrestrial. The iapetus ocean 2 was an ocean that existed in the neoproterozoic and paleozoic eras of the geologic timescale between 600 and 400 million years ago.
The great distance from saturns tidal forces and from most of the other moons and ring particles has probably allowed the iapetus surface to be largely unaffected by any melting episodes that could have caused some smoothing or resurfacing as on some of the moons closer to saturn. Iapetus is a moon that orbits round the planet saturn. Iapetus very likely formed at a different time than saturns other moons, specifically, according to a recent study, all of saturns moons beyond the orbit of rhea formed no more than one hundred million years ago, meaning that iapetus alongside titan are two of the few primordial moons of saturn. On the trace of the iapetus suture in ireland and britain journal of. Apr 28, 2014 when and where did the ancient iapetus ocean suture the most fundamental appalachian structure form. Structural mapping in central newfoundland has identified seven distinct phases of deformation d 1 to d 7, the most significant of which are d 1, d 2, and d 4. Iapetus was a powerful figure in greek mythology and certain aspects of their creation stories. The iapetus suture runs where the iapetus ocean was before.
Tectonometamorphic evolution along the iapetus suture zone. Iapetus took the side of the olympians in the war of the titans fact 2. Iapetus is made of mostly ice, with a small amount of rock. Subduction of the iapetus led to its destruction and the collision of different continental blocks and island arcs. Iapetus orbits at 2,2,000 miles 3,561,000 kilometers from saturn. Iapetus definition is the third largest satellite of saturn with a diameter of approximately 890 miles 1440 km. Iapetus japetus, the piercer iapetus was a titan god of mortal life span or god of death. It was discovered by giovanni domenico cassini in 1671 iapetus is unusual. This page is an introduction to the series of webpages on the geology of the wessex coast of the south of england. The iapetus suture is a large geological fault that marks the collision zone where the north of ireland and scotland collided with southern ireland, england and.
When and where did the ancient iapetus ocean suture the most fundamental appalachian structure form. This is the iapetus suture, the trace of a longvanished, early palaeozoic ocean obliterated by the convergence and ultimate collision of the ancient continents that it once separated. Geological history of britain and ireland tells the geological story of the region at a level accessible to undergraduate geologists, as well as to postgraduates, professionals or informed amateurs. Jun 27, 2016 iapetus is the thirdlargest moon orbiting saturn, with a diameter of 914 miles 1,471. Pdf iapetus suture located beneath the north sea by. Mountainbuilding and the end of an ancient ocean beneath modern new england. It takes the same amount of time to finish an orbit around saturn. Rostral suture is only present when the trilobite possesses a rostrum or rostral plate. Location of rheic and iapetus sutures on an early mesozoic reconstruction of the north atlantic and the close correspondence of the rheic suture with sutures. Jun 07, 2012 posts about iapetus suture written by steve drury.
In great britain the suture runs pretty much along the border between england and scotland. Its mass is estimatedcalculated at being 1,805,952,411,282,580,000,000 kg. The iapetus suture is one of several major geological faults caused by the collision of several ancient land masses forming a suture. Iapetus very likely formed at a different time than saturns other moons, specifically, according to a recent study, all of saturns moons beyond the orbit of rhea formed no more than one. In this lesson, well explore this figure and see what role he played. Saturns strange moon iapetus may have been deformed by impact nasajpl san francisco iapetus, one of saturns weirdest moons, has an enormous equatorial mountain ridge, a spiky belt that. Iapetus suture niarbyl fault isle of man kingsley 23jun. The iapetus suture is defined as the zone separating continental crustal blocks which were formerly on opposing margins of the early palaeozoic proto atlantic ocean wilson 1966.
Iapetus is best known for its dramatic twotone coloration, but recent discoveries by the cassini mission have revealed several other unusual physical characteristics, such as an. The isle of man lies close to the surface trace of one of the most important regional palaeozoic structures the iapetus suture. It is intended to provide introductory information on the geology of great britain. For alistair moffat, history is rooted in the personal. Saturns strange moon iapetus may have been deformed by impact nasajpl san francisco iapetus, one of saturns weirdest moons, has an enormous equatorial mountain ridge, a spiky.
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