23-660: Musgrave may refer to: Places [ edit ] Australia [ edit ] Generally [ edit ] Musgrave Block , a geological province in South Australia and Western Australia Queensland [ edit ] Musgrave, Queensland , a town in Queensland Musgrave Telegraph Station , a former telegraph station in Queensland Port Musgrave ,
46-912: A bay on the west coast of Cape York Peninsula in Queensland Electoral district of Musgrave , a former electorate Northern Territory and South Australia [ edit ] Musgrave Ranges , a mountain range in the Northern Territory and South Australia South Australia [ edit ] County of Musgrave , a cadastral unit England [ edit ] Musgrave, Cumbria , civil parish in Cumbria Great Musgrave , village in Cumbria Little Musgrave , village in Cumbria Musgrave railway station , station to
69-572: A potential source for the Tollu Volcanics. The caldera is truncated on the north by a north-dipping thrust fault and is probably tilted to the south. Several other prominent gravity and magnetic highs are arranged along the Mugrave Block strike line, one of which was drilled by BHP in the 1990s through 300m of Permian glacial sediments. This caldera is composed of highly tectonised, stretched felsic volcanic rocks, interleaved with
92-542: A significant thickness of equally sheared titaniferous differentiated mafic sills . The best interpretation of this, and probably also of the Palgrave Caldera is that they represent hot spots along the Musgrave Block where significant magma flux penetrated, formed volcanic calderas with large subvolcanic granite intrusions, and associated mafic volcanism. The relationship of the large granite calderas to
115-493: A suburb of Durban that is part of Berea Organizations [ edit ] Musgrave Group , Irish food wholesaler and retailer Musgrave Rifles , South African rifle company John Musgrave & Sons , a manufacturer of stationary steam engines located in Lancashire, England Other uses [ edit ] Musgrave (surname) Musgrave non-dead-centre engine , a stationary steam engine " The Adventure of
138-547: Is a large volcanic and granite caldera edifice of about 1500 square kilometres sandwiched between the Jameson Range Intrusion and the gneisses underlying the Bentley Supergroup volcanics. The caldera is in two parts, an overlying volcanic edifice composed primarily of porphyritic rhyolite and dacite with occasional vent complex agglomerates, which shows prominent circular ring-complex faults, and
161-583: Is composed primarily of bimodal volcanism , with several hundred-metres thicknesses each of alternating rhyolite and basaltic volcanism adding up to several kilometres true thickness in the area of the Warburton Range to the southwest of the Palgrave caldera. The Bentley Supergroup is divided into the Cassidy Group, Pussycat Group and Tollu Group. The prevailing theory of the formation of
184-458: Is currently passive geologically, with surficial processes described as residual erosion. The area currently experiences on average less than 150mm (6 inches) of rainfall per annum, which provides little surface runoff and hence virtually no erosion. The landforms of the area are primarily composed of wide calcrete plains, often covered by Pleistocene Age aeolian deposits of sand dunes, sometimes reworked into ephemeral sheetwash fans. Outcrop
207-489: Is rare, restricted primarily to the igneous rocks of the Giles Complex and several granite domes , gneiss domes and isolated outcrops. This area is also a distinct physiographic province of the larger West Australian Shield . Several Palaeozoic to neoproterozoic sedimentary basins onlap the Musgrave Block, and are exposed mostly around its edges. These were derived from erosion of the Musgrave Block basement during
230-413: The 1050-1080 Ma volcanics has been postulated as one in which the granite calderas were the source for the intermediate and felsic volcanic rocks. The Bentley Supergroup Volcanics are a sequence of bimodal supracrustal volcanic rocks formed during the ~1080 Warakurna Large Igneous Province, and are widely considered comagmatic with the mafic to ultramafic Giles Complex intrusions. The Bentley Supergroup
253-627: The Bentley Supergroup is that the Warakurna Large Igneous Province, primarily represented by the Giles Complex intruding into the lower crust, breached the crust and erupted voluminous basaltic lava flows, and when enough heat had been added to the crust by the massive intrusions below, intracrustal felsic and intermediate melts were produced, forming A-type intracontinental granites of the Winburn Suite, and
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#1732772453907276-630: The Musgrave Block is as part of a time-space plot in which geological events are arrayed in time against rock units, stratigraphic relationships and for correlative purposes. The key events in the Musgrave Block are: There are three main phases of granite intrusion into the Musgrave Block: The Kulgera Suite is a widespread, voluminous suite of fractionated amphibole-bearing plagioclase rich tonalite to granodiorites of an I-type affinity (Stewart, 2003). They are dated at ~1200 Ma and are considered to be related to melting of
299-631: The Musgrave Province) is an east-west trending belt of Proterozoic granulite - gneiss basement rocks approximately 500 kilometres (310 mi) long. The Musgrave Block extends from western South Australia into Western Australia . The Musgrave Block is primarily exposed through the actions of the Petermann Orogeny at c. 535-550 Ma, which exhumed the orogenic belt along the Woodroffe Thrust. The Musgrave Block
322-474: The Musgrave Ritual ", an 1893 Sherlock Holmes mystery by Arthur Conan Doyle " Matty Groves ", a folk ballad sometimes called "Little Musgrave and Lady Barnard" See also [ edit ] Musgraves (disambiguation) Musgrave Park (disambiguation) Musgrove (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
345-684: The Tollu Volcanics to the Bentley Supergroup. There has been little real study done on the Bentley Supergroup Volcanics since the 1960s. Geochemical and petrological observations are few and far between or lacking comprehensive rare earth and trace elements suites. The Bentley Supergoup is poorly exposed in South Australia (if at all). Musgraves (disambiguation) (Redirected from Musgraves (disambiguation) ) Musgraves may refer to: Musgrave Group , an Irish food wholesaler The Musgraves , British roots-pop band People with
368-557: The Winburn Granite which underlies the caldera and is primarily exposed in the east as a pink, potassium-feldspathic porphyry granite, the lower margins of which are weakly tectonised. The whole caldera edifice is tilted to the southwest, which is why the Winburn Granite is exposed along the east and northeast. The Skirmish Hill Caldera is poorly exposed along the southern margin of the Musgrave Block and consists of granite and overlying? rhyolite. It has been traditionally seen as
391-563: The felsic volcanic rocks. This created the typical bimodal volcanic signature of the Cassidy Group and Pussycat Groups; the Tollu Group is a bit different, and it is considered the product of the large granite calderas which were formed immediately after the Giles Complex magmatism. Giles (1980) and earlier mappers have assigned the MacDougall Formation, overlying Mummawarrawarra Basalt, intermediate Smoke Hill Volcanics and
414-441: The latter is perhaps created by the above process, and the earlier suite a hybrid between A-type and I-type granites formed by assimilation and mixing. There are also significant granite caldera complexes, of many hundred square kilometres in area, which intrude the Musgrave Block. These are of the ~1050 Ma age, and are subvolcanic , possibly related to some of the ~1050 Ma volcanic rocks. The Palgrave Palgrave Volcanic Association
437-489: The lower crust during the ~1200 Ma Musgravian Orogeny. The Windburn Suite is considered to be an anorogenic A-type granite suite produced by anatexis of the lower crust at ~1080 to 1050 Ma by the injection of the mafic Giles Complex intrusions. They are in most cases poorly fractionated, biotite-muscovite granites, with little hornblende, a high radiometric count and the presence of fluorine. The 1080 Ma granites and 1050 Ma granites can be distinguished on geochemical grounds,
460-489: The neoproterozoic to Permian. The Proterozoic of the Musgrave Block is composed of seven main classes of rocks: The Musgrave Block is flanked by several Proterozoic to Palaeozoic sedimentary basins, whose sedimentary history can elucidate the timing of tectonic events in the Musgrave Block post-1080 Ma. These include the Proterozoic Amadeus and Officer Basins . The most illustrating way of considering
483-476: The surname Musgraves [ edit ] See also: Musgrave (surname) Dennis Musgraves (born 1943), American baseball player Kacey Musgraves (born 1988), American country music singer and songwriter See also [ edit ] Musgrave (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Musgraves . If an internal link led you here, you may wish to change
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#1732772453907506-524: The title Musgrave . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Musgrave&oldid=1230584450 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Musgrave Block The Musgrave Block (also known as
529-686: The west of Great Musgrave in Cumbria Canada [ edit ] Musgrave Harbour , a town in the province of Newfoundland and Labrador Musgravetown , a town in the province of Newfoundland and Labrador Mount Musgrave , a mountain on the island of Newfoundland Musgrave Land , a peninsula in Labrador New Zealand [ edit ] Mount Musgrave , South Island, New Zealand Northern Ireland [ edit ] Musgrave, Belfast , ward of South Belfast South Africa [ edit ] Musgrave, Durban ,
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