Matches in SemOpenAlex for { <https://semopenalex.org/work/W3155192819> ?p ?o ?g. }
- W3155192819 endingPage "103648" @default.
- W3155192819 startingPage "103648" @default.
- W3155192819 abstract "Plate boundary evolution and interpreted paleogeography commonly involve the interaction between oceanic ridges and trenches. Western Junggar and Central-North Tianshan, NW China, have previously been regarded as independent orogens, but this model was challenged by the discovery of their similar tropic-subtropic coral assemblages and of Precambrian and Early Paleozoic clasts transmitted from the Central Tianshan in Early to Middle Paleozoic sediments in SW Junggar, suggesting they had been in contact by then. The presence of Late Silurian-Early Devonian adakitic rocks in northern SW Junggar was explained by slab roll-back, which required an active subducting slab in SW Junggar. However, this model is inconsistent with the cessation of arc magmatism immediately after the adakitic magmatism indicating there was no subduction in SW Junggar at those times. By re-evaluating the relevance of four diagnostic features of modern Californian ridge subduction, we propose a new model to explain the Late Silurian-Early Devonian orogenic framework of NW China in terms of sub-parallel ridge-trench interaction. The transmitted clasts from Central Tianshan in Early Paleozoic sediments in SW Junggar, at the same time as the Late Ordovician and Middle Silurian coral assemblages, and the complementary accretionary complex in SW Junggar and magmatic arc in Central Tianshan, are all contributary evidence for an Early Paleozoic subduction system. This subduction zone was intruded by two 446-380 Ma double magmatic belts: 1. A ridge subduction-generated adakitic gabbro-basalt-andesite-diorite-granite-rhyolite suite that intruded a 504-446 Ma accretionary complex in SW Junggar, and 2. a magmatic arc in Central Tianshan. A buoyant subducting ridge rifted and separated these magmatic belts resulting in the opening of a new 414-325 Ma ocean, which is preserved in OIB- and MORB-type ophiolites in southeastern SW Junggar and North Tianshan. These geological and geochemical relationships resemble those generated by oceanic spreading in the modern Gulf of California, which led to separation of magmatic belts in Baja California and mainland Mexico. The new ocean split the Central Tianshan magmatic arc from the Early Paleozoic Mt. Xiemisitai-Barleik-Mayile accretionary complex in SW Junggar, which changed to a new passive continental margin that led to deposition of Devonian shallow marine-terrestrial sediments, and to cessation of magmatism at 379-349 Ma. These features, including the Middle Paleozoic orogenic architecture and the geochemical properties of specific magmatic rocks, indicate the development of a Late Silurian-Early Devonian sub-parallel-to-trench ridge subduction. This model not only interprets phenomena mentioned in the above earlier models, but also reconciles unresolved spatial relationships between Western Junggar and the Tianshan. Subsequent closure of the new ocean and subduction of its ridge in the Late Paleozoic gave rise to the archipelagic framework that we see today in NW China. An analysis of worldwide examples of sub-parallel ridge-trench interaction demonstrates that a ridge can undergo multiple episodes of subduction before a terminal ocean closure. In this context our new tectonic model for the western Junggar and Tianshan regions may provide an improved understanding of the structure and evolution of ridge-subduction events in ancient orogenic belts." @default.
- W3155192819 created "2021-04-26" @default.
- W3155192819 creator A5009913466 @default.
- W3155192819 creator A5019211335 @default.
- W3155192819 creator A5033280907 @default.
- W3155192819 creator A5034727836 @default.
- W3155192819 creator A5070256737 @default.
- W3155192819 creator A5080994736 @default.
- W3155192819 date "2021-06-01" @default.
- W3155192819 modified "2023-10-16" @default.
- W3155192819 title "Sub-parallel ridge-trench interaction and an alternative model for the Silurian-Devonian archipelago in Western Junggar and North-Central Tianshan in NW China" @default.
- W3155192819 cites W1149838080 @default.
- W3155192819 cites W1423730270 @default.
- W3155192819 cites W1754007230 @default.
- W3155192819 cites W1853955399 @default.
- W3155192819 cites W1964047861 @default.
- W3155192819 cites W1964909252 @default.
- W3155192819 cites W1966081220 @default.
- W3155192819 cites W1973685451 @default.
- W3155192819 cites W1981435036 @default.
- W3155192819 cites W1981887735 @default.
- W3155192819 cites W1983507417 @default.
- W3155192819 cites W1983523676 @default.
- W3155192819 cites W1990572915 @default.
- W3155192819 cites W1992832689 @default.
- W3155192819 cites W1996310503 @default.
- W3155192819 cites W1997438303 @default.
- W3155192819 cites W1998752110 @default.
- W3155192819 cites W2002229468 @default.
- W3155192819 cites W2003323528 @default.
- W3155192819 cites W2006340412 @default.
- W3155192819 cites W2008313305 @default.
- W3155192819 cites W2012890154 @default.
- W3155192819 cites W2015188993 @default.
- W3155192819 cites W2018995159 @default.
- W3155192819 cites W2019564606 @default.
- W3155192819 cites W2019621021 @default.
- W3155192819 cites W2022040450 @default.
- W3155192819 cites W2024263269 @default.
- W3155192819 cites W2024920534 @default.
- W3155192819 cites W2024953052 @default.
- W3155192819 cites W2025125272 @default.
- W3155192819 cites W2025219364 @default.
- W3155192819 cites W2026596341 @default.
- W3155192819 cites W2036647617 @default.
- W3155192819 cites W2037406988 @default.
- W3155192819 cites W2039245159 @default.
- W3155192819 cites W2040372579 @default.
- W3155192819 cites W2041416062 @default.
- W3155192819 cites W2044934678 @default.
- W3155192819 cites W2049308689 @default.
- W3155192819 cites W2050227900 @default.
- W3155192819 cites W2051241532 @default.
- W3155192819 cites W2052686569 @default.
- W3155192819 cites W2053595665 @default.
- W3155192819 cites W2053745131 @default.
- W3155192819 cites W2054154018 @default.
- W3155192819 cites W2060157729 @default.
- W3155192819 cites W2065065857 @default.
- W3155192819 cites W2072795000 @default.
- W3155192819 cites W2079767098 @default.
- W3155192819 cites W2082193606 @default.
- W3155192819 cites W2094642028 @default.
- W3155192819 cites W2094985587 @default.
- W3155192819 cites W2098070539 @default.
- W3155192819 cites W2104880854 @default.
- W3155192819 cites W2107381156 @default.
- W3155192819 cites W2119578313 @default.
- W3155192819 cites W2124276467 @default.
- W3155192819 cites W2126945208 @default.
- W3155192819 cites W2128834298 @default.
- W3155192819 cites W2132986157 @default.
- W3155192819 cites W2137382091 @default.
- W3155192819 cites W2143093330 @default.
- W3155192819 cites W2144629160 @default.
- W3155192819 cites W2153500334 @default.
- W3155192819 cites W2162334444 @default.
- W3155192819 cites W2167145749 @default.
- W3155192819 cites W2169769753 @default.
- W3155192819 cites W2292455125 @default.
- W3155192819 cites W2305936762 @default.
- W3155192819 cites W2332950861 @default.
- W3155192819 cites W2411386082 @default.
- W3155192819 cites W2415374936 @default.
- W3155192819 cites W2530044539 @default.
- W3155192819 cites W2568738151 @default.
- W3155192819 cites W2594742725 @default.
- W3155192819 cites W2598113169 @default.
- W3155192819 cites W2707046996 @default.
- W3155192819 cites W2770949227 @default.
- W3155192819 cites W2773813327 @default.
- W3155192819 cites W2790084727 @default.
- W3155192819 cites W2797644499 @default.
- W3155192819 cites W2803847438 @default.
- W3155192819 cites W2806293115 @default.
- W3155192819 cites W2888284655 @default.
- W3155192819 cites W2989827384 @default.
- W3155192819 cites W4242272098 @default.