FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2775382886> ?p ?o ?g. }

• W2775382886 endingPage "40" @default.
• W2775382886 startingPage "22" @default.
• W2775382886 abstract "Extensional episodes in Precambrian orogens are often difficult to decipher because of subsequent orogenesis and intracontinental reworking. Here, we use geochemical and geochronological constraints of a suite of preserved mafic–ultramafic rocks in the Paleoproterozoic Capricorn Orogen of Western Australia to reveal ophiolites, continental ribbons and aborted rifts. The Capricorn Orogen separates the Archean Yilgarn and Pilbara cratons and includes mafic–ultramafic rocks of the fault-bounded Trillbar Complex and Bryah Sub-basin. The Trillbar Complex is situated within a fault wedge between the Yilgarn Craton and a reworked portion of the craton to the north (Yarlarweelor Gneiss Complex), and has been variously interpreted as an obducted ophiolite, oceanic plateau or continental rift-related magmatic suite. In this study, a new U–Pb zircon age of 2069 ± 9 Ma from the Trillbar Complex indicates that it is at least 40 Myr older than the mafic and ultramafic rocks of the Bryah Sub-basin, with which it has previously been linked. The Trillbar Complex is characterised by E-MORB-like signatures, hydrous crystallization and a lack of crustal contamination, and probably formed in a mid-ocean ridge or, alternatively, an oceanic intraplate setting. Conversely, the 2030–1990 Ma mafic and ultramafic rocks in the Bryah Sub-basin show evidence of crustal contamination and are interpreted to have formed in a continental rift setting. Moreover, there is no evidence for boninites in the Bryah Sub-basin and, therefore, no justification for invoking a fore-arc setting. Thus, these pieces of evidence reveal a different tectonic and geodynamic origin for the Trillbar Complex compared to the Bryah Sub-basin rocks. The tectonic setting for the Trillbar Complex requires oceanic crust to have existed between the Yilgarn Craton and the Yarlarweelor Gneiss Complex. However, almost identical Archean histories of these crustal blocks support a proximal origin for the Yarlarweelor Gneiss Complex and a likely origin as a microcontinental ribbon. Farther east (in present-day coordinates), the Bryah Sub-basin and other sedimentary basins record punctuated rifting that never led to the formation of oceanic crust. Therefore, rigorous evaluation of high quality geochemical data coupled to geochronology from mafic–ultramafic rocks is able to provide valuable constraints on extensional episodes, where other evidence has since been erased from the rock record." @default.
• W2775382886 created "2017-12-22" @default.
• W2775382886 creator A5002671147 @default.
• W2775382886 creator A5007172108 @default.
• W2775382886 creator A5011771114 @default.
• W2775382886 creator A5013584741 @default.
• W2775382886 creator A5013650435 @default.
• W2775382886 creator A5024536355 @default.
• W2775382886 creator A5026256786 @default.
• W2775382886 creator A5027438963 @default.
• W2775382886 creator A5028321794 @default.
• W2775382886 creator A5028372730 @default.
• W2775382886 creator A5037985249 @default.
• W2775382886 creator A5038078300 @default.
• W2775382886 creator A5070777147 @default.
• W2775382886 creator A5073785361 @default.
• W2775382886 creator A5079395428 @default.
• W2775382886 creator A5090203900 @default.
• W2775382886 creator A5090476912 @default.
• W2775382886 date "2018-03-01" @default.
• W2775382886 modified "2023-10-17" @default.
• W2775382886 title "Extensional episodes in the Paleoproterozoic Capricorn Orogen, Western Australia, revealed by petrogenesis and geochronology of mafic–ultramafic rocks" @default.
• W2775382886 cites W1739169539 @default.
• W2775382886 cites W1833482249 @default.
• W2775382886 cites W1922701939 @default.
• W2775382886 cites W1963648072 @default.
• W2775382886 cites W1966013526 @default.
• W2775382886 cites W1969845853 @default.
• W2775382886 cites W1969859799 @default.
• W2775382886 cites W1971708279 @default.
• W2775382886 cites W1973776318 @default.
• W2775382886 cites W1975545888 @default.
• W2775382886 cites W1977033115 @default.
• W2775382886 cites W1977743275 @default.
• W2775382886 cites W1980210437 @default.
• W2775382886 cites W1983339705 @default.
• W2775382886 cites W1985620741 @default.
• W2775382886 cites W1987907556 @default.
• W2775382886 cites W1991149004 @default.
• W2775382886 cites W1992415260 @default.
• W2775382886 cites W1999448338 @default.
• W2775382886 cites W2000367714 @default.
• W2775382886 cites W2005030647 @default.
• W2775382886 cites W2005473000 @default.
• W2775382886 cites W2007105153 @default.
• W2775382886 cites W2011635835 @default.
• W2775382886 cites W2022974215 @default.
• W2775382886 cites W2027720889 @default.
• W2775382886 cites W2027862110 @default.
• W2775382886 cites W2029473889 @default.
• W2775382886 cites W2030870291 @default.
• W2775382886 cites W2033875239 @default.
• W2775382886 cites W2035097203 @default.
• W2775382886 cites W2042692134 @default.
• W2775382886 cites W2043337571 @default.
• W2775382886 cites W2047604465 @default.
• W2775382886 cites W2048742589 @default.
• W2775382886 cites W2049536229 @default.
• W2775382886 cites W2052473341 @default.
• W2775382886 cites W2054620347 @default.
• W2775382886 cites W2069790395 @default.
• W2775382886 cites W2070631625 @default.
• W2775382886 cites W2078840355 @default.
• W2775382886 cites W2079130084 @default.
• W2775382886 cites W2082421959 @default.
• W2775382886 cites W2084954374 @default.
• W2775382886 cites W2085984893 @default.
• W2775382886 cites W2086293877 @default.
• W2775382886 cites W2086557360 @default.
• W2775382886 cites W2088642043 @default.
• W2775382886 cites W2093101208 @default.
• W2775382886 cites W2096391343 @default.
• W2775382886 cites W2104959535 @default.
• W2775382886 cites W2108844897 @default.
• W2775382886 cites W2111090571 @default.
• W2775382886 cites W2119438235 @default.
• W2775382886 cites W2136039128 @default.
• W2775382886 cites W2138522501 @default.
• W2775382886 cites W2144461623 @default.
• W2775382886 cites W2144911249 @default.
• W2775382886 cites W2146117929 @default.
• W2775382886 cites W2151802570 @default.
• W2775382886 cites W2157629521 @default.
• W2775382886 cites W2158434152 @default.
• W2775382886 cites W2161188118 @default.
• W2775382886 cites W2164327254 @default.
• W2775382886 cites W2219995365 @default.
• W2775382886 cites W2261409496 @default.
• W2775382886 cites W2281768548 @default.
• W2775382886 cites W2312828419 @default.
• W2775382886 cites W2527056568 @default.
• W2775382886 cites W2555759266 @default.
• W2775382886 cites W2596872768 @default.
• W2775382886 cites W2596883534 @default.
• W2775382886 cites W2742749202 @default.
• W2775382886 cites W954760574 @default.
• W2775382886 doi "https://doi.org/10.1016/j.precamres.2017.12.015" @default.
• W2775382886 hasPublicationYear "2018" @default.

• next