Статті в журналах з теми "Southern New England Fold Belt"

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1

Brock, Glenn A. "Middle Cambrian molluscs from the southern New England Fold Belt, New South Wales, Australia." Geobios 31, no. 5 (January 1998): 571–86. http://dx.doi.org/10.1016/s0016-6995(98)80045-4.

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2

Brock, Glenn A. "Middle Cambrian articulate brachiopods from the Southern New England Fold Belt, Northeastern N.S.W., Australia." Journal of Paleontology 72, no. 4 (July 1998): 604–19. http://dx.doi.org/10.1017/s0022336000040336.

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Calcareous articulate brachiopods are rare components of the high diversity, phosphatic, silicified, and epidote coated shelly fauna derived from Middle Cambrian (Floran-Undillan) allochthonous limestone clasts from the Murrawong Creek Formation, southern New England Fold Belt, northeastern New South Wales, Australia. Three taxa are described, the kutorginids Nisusia metula n. sp., and Yorkia sp. indet., and the protorthid Arctohedra austrina n. sp. Yorkia is documented from Australia for the first time. An unusual valve (possibly a brachial valve) of enigmatic affinity is also reported and illustrated. Generically, the taxa provide broad regional paleobiogeographic links with the “first discovery limestone” Member of the Coonigan Formation, western New South Wales, and the Current Bush Limestone in the Georgina Basin, northern Australia, and globally, with broadly contemporaneous sequences in western North America, Siberia, and South China.
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3

Collins, W. J. "A reassessment of the ‘Hunter‐Bowen Orogeny’: Tectonic implications for the southern New England fold belt." Australian Journal of Earth Sciences 38, no. 4 (September 1991): 409–23. http://dx.doi.org/10.1080/08120099108727981.

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4

Johnston, A. J., R. Offler, and S. Liu. "Structural fabric evidence for indentation tectonics in the Nambucca Block, southern New England Fold Belt, New South Wales." Australian Journal of Earth Sciences 49, no. 2 (April 2002): 407–21. http://dx.doi.org/10.1046/j.1440-0952.2002.00919.x.

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5

OFFLER, R., R. A. GLEN, H. HYODO, and Z. JIANG. "Subduction of arc basaltic andesite: implications for the tectonic history of the southern New England Fold Belt." Australian Journal of Earth Sciences 51, no. 6 (December 2004): 819–30. http://dx.doi.org/10.1111/j.1400-0952.2004.01087.x.

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6

Allan, A. D., and E. C. Leitch. "The tectonic significance of unconformable contacts at the base of Early Permian sequences, southern New England Fold Belt." Australian Journal of Earth Sciences 37, no. 1 (March 1990): 43–49. http://dx.doi.org/10.1080/08120099008727904.

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7

Sano, S., R. Offler, H. Hyodo, and T. Watanabe. "Geochemistry and Chronology of Tectonic Blocks in Serpentinite Mélange of the Southern New England Fold Belt, NSW, Australia." Gondwana Research 7, no. 3 (July 2004): 817–31. http://dx.doi.org/10.1016/s1342-937x(05)71066-2.

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8

Dirks, P. H. G. M., P. G. Lennox, and S. E. Shaw. "Tectonic implications of two Rb/Sr biotite dates for the Tia Granodiorite, southern New England Fold Belt, NSW, Australia." Australian Journal of Earth Sciences 39, no. 1 (February 1992): 111–14. http://dx.doi.org/10.1080/08120099208728005.

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9

Dirks, P. H. G. M., R. Offler, and W. J. Collins. "Timing of emplacement and deformation of the Tia Granodiorite, southern New England Fold Belt, NSW: Implications for the metamorphic history." Australian Journal of Earth Sciences 40, no. 2 (April 1993): 103–8. http://dx.doi.org/10.1080/08120099308728067.

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10

Noble, S. R., R. D. Tucker, and T. C. Pharaoh. "Lower Palaeozoic and Precambrian igneous rocks from eastern England, and their bearing on late Ordovician closure of the Tornquist Sea: constraints from U-Pb and Nd isotopes." Geological Magazine 130, no. 6 (November 1993): 835–46. http://dx.doi.org/10.1017/s0016756800023190.

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AbstractThe U-Pb isotope ages and Nd isotope characteristics of asuite of igneous rocks from the basement of eastern England show that Ordovician calc-alkaline igneous rocks are tectonically interleaved with late Precambrian volcanic rocks distinct from Precambrian rocks exposed in southern Britain. New U-Pb ages for the North Creake tuff (zircon, 449±13 Ma), Moorby Microgranite (zircon, 457 ± 20 Ma), and the Nuneaton lamprophyre (zircon and baddeleyite, 442 ± 3 Ma) confirm the presence ofan Ordovician magmatic arc. Tectonically interleaved Precambrian volcanic rocks within this arc are verified by new U-Pb zircon ages for tuffs at Glinton (612 ± 21 Ma) and Orton (616 ± 6 Ma). Initial εNd values for these basement rocks range from +4 to - 6, consistent with generation of both c. 615 Ma and c. 450 Ma groups of rocksin continental arc settings. The U-Pb and Sm-Nd isotope data support arguments for an Ordovician fold/thrust belt extending from England to Belgium, and that the Ordovician calc-alkaline rocks formed in response to subductionof Tornquist Sea oceanic crust beneath Avalonia.
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11

Brock, Glenn A. "Faunal Composition, Depositional Environment and Biogeographic Affinities of Middle Cambrian Shelly Fossils from the Southern New England Fold Belt, Northeastern N.S.W, Australia." Paleontological Society Special Publications 8 (1996): 47. http://dx.doi.org/10.1017/s2475262200000496.

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12

Fukui, Shiro, Tatsuki Tsujimori, Teruo Watanabe, and Tetsumaru Itaya. "Tectono-metamorphic evolution of high-P/T and low-P/T metamorphic rocks in the Tia Complex, southern New England Fold Belt, eastern Australia: Insights from K–Ar chronology." Journal of Asian Earth Sciences 59 (October 2012): 62–69. http://dx.doi.org/10.1016/j.jseaes.2012.05.022.

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13

Grybowski, D. A. "EXPLORATION IN PERMIT NSW/P10 IN THE OFFSHORE SYDNEY BASIN." APPEA Journal 32, no. 1 (1992): 251. http://dx.doi.org/10.1071/aj91019.

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The offshore Sydney Basin is unique frontier acreage because it is adjacent to Australia's largest gas and petroleum market on the east coast of New South Wales. Although the onshore Sydney Basin has been tested by more than 100 petroleum exploration wells, no wells have been drilled offshore.New South Wales Permit NSW/P10 has an area of 9419 km2 and extends over the offshore northern and central Sydney Basin which contains Upper Carboniferous to Middle Triassic lithiclastic and siliciclastic sedimentary rocks and volcanics. Maximum depth to magnetic basement in NSW/P10 is greater that 9 km in the southern Macquarie Syncline and south of the New England Fold Belt at the continental margin. Recent seismic reprocessing and aeromagnetic surveying have focused the exploration effort on northern NSW/P10 where thick (greater than 1600 m) Upper Permian section containing source and reservoir facies is predicted. Other areas in the permit are less prospective because of widespread intrasedimentary magnetic bodies or the absence by erosion of Upper Permian and Triassic section.The Sydney Basin is an exhumed basin that reached its maximum depth of burial in the Early Cretaceous prior to basinwide uplift of 1.5-3.5 km during the Tasman Sea rifting. The magnitude and timing of the exhumation can be demonstrated with fluid inclusion, magnetisation, fission track and vitrinite reflectance data. The presence of commercial quantities of oil or gas in Upper Permian reservoirs depends on trap integrity having been maintained during the epeirogeny, or the re-migration of hydrocarbon into new traps.
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14

Korsch, J., C. J. Boreham, J. M. Totterdell, R. D. Shaw, and M. G. Nicoll. "DEVELOPMENT AND PETROLEUM RESOURCE EVALUATION OF THE BOWEN, GUNNEDAH AND SURAT BASINS, EASTERN AUSTRALIA." APPEA Journal 38, no. 1 (1998): 199. http://dx.doi.org/10.1071/aj97011.

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The Early Permian to Middle Triassic Bowen and Gunnedah basins and the Early Jurassic to Early Cretaceous Surat Basin in eastern Australia developed in response to a series of interplate and intraplate tectonic events located to the east of the basin system. The initial event was extensional and stretched the continental crust to form a significant Early Permian East Australian Rift System. The most important of the rift-related features are a series of half graben that form the Denison Trough, now the site of several commercial gas fields. Several contractional events from the mid-Permian to the Middle Triassic are associated with the development of a foreland fold and thrust belt in the New England Orogen. This caused a foreland loading phase of subsidence in the Bowen and Gunnedah basins. Thick coal measures deposited towards the end of the Permian are the most important hydrocarbon source rocks in these basins. The development of the Surat Basin marked a major change in the subsidence and sedimentation patterns. It was only towards the end of this subsidence that sufficient burial was achieved to put the source rocks over much of the basin into the oil window. Based on an evaluation of the undiscovered hydrocarbon resources for the Bowen and Surat basins in southern Queensland, our estimates of the yields of hydrocarbons suggest that significant volumes of hydrocarbons have been produced in the basins. The bulk of the hydrocarbons were generated after 140 Ma and most of the generation occurred in the late Early Cretaceous. Because the estimated volume of the hydrocarbons generated far exceeds the volume of discovered hydrocarbons, preservation of accumulations may be the main risk factor. The yield analysis, by demonstrating the potentially large quantities of hydrocarbons available, should act as a stimulus to exploration initiatives, particularly in the search for stratigraphic traps.
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15

Merriman, R. J., T. C. Pharaoh, N. H. Woodcock, and P. Daly. "The metamorphic history of the concealed Caledonides of eastern England and their foreland." Geological Magazine 130, no. 5 (September 1993): 613–20. http://dx.doi.org/10.1017/s0016756800020914.

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AbstractWhite mica (illite) crystallinity data, derived mostly from borehole samples, have been used to generate a contoured metamorphic map of the concealed Caledonide fold belt of eastern England and the foreland formed by the Midlands Microcraton. The northern subcrop of the fold belt is characterized by epizonal phyllites and quartzites of possible Cambrian age, whereas anchizonal grades characterize Silurian to Lower Devonian strata of the Anglian Basin in the southern subcrop of the fold belt. Regional metamorphism in the Anglian Basin resulted from deep burial and Acadian deformation beneath a possible overburden of 7 km, assuming a metamorphic field gradient of 36 °C km-1. Late Proterozoic volcaniclastic rocks forming the basement of the microcraton show anchizonal to epizonal grades that probably developed during late Avalonian metamorphism. Cambrian to Tremadoc strata, showing late diagenetic alteration, rest on the basement with varying degrees of metamorphic discordance. During early Palaeozoic times, much of the microcraton was a region of slow subsidence with overburden thicknesses of 3.3–5.5 km. However, concealed Tremadoc strata in the northeast of the microcraton reach anchizonal grades and may have been buried to depths of 7 km beneath an overburden of uncertain age.
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16

Bryan, S. E., R. J. Holcombe, and C. R. Fielding. "Yarrol terrane of the northern New England Fold Belt: Forearc or backarc?" Australian Journal of Earth Sciences 48, no. 2 (April 2001): 293–316. http://dx.doi.org/10.1046/j.1440-0952.2001.00861.x.

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17

Ishiga, H., E. C. Leitch, T. Watanabe, T. Naka, and M. Iwasaki. "Radiolarian and conodont biostratigraphy of siliceous rocks from the New England Fold Belt." Australian Journal of Earth Sciences 35, no. 1 (March 1988): 73–80. http://dx.doi.org/10.1080/08120098808729440.

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18

Morgan, E. J. "Early Devonian subaqueous andesitic volcanism in the New England Fold Belt, Eastern Australia." Australian Journal of Earth Sciences 44, no. 2 (April 1997): 227–36. http://dx.doi.org/10.1080/08120099708728306.

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19

Murray, C. G., C. L. Fergusson, P. G. Flood, W. G. Whitaker, and R. J. Korsch. "Plate tectonic model for the Carboniferous evolution of the New England Fold Belt." Australian Journal of Earth Sciences 34, no. 2 (June 1987): 213–36. http://dx.doi.org/10.1080/08120098708729406.

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20

Aitchison, Jonathan C. "Discussion: Radiolarian and conodont biostratigraphy of siliceous rocks from the New England Fold Belt." Australian Journal of Earth Sciences 36, no. 1 (March 1989): 141–42. http://dx.doi.org/10.1080/14400958908527958.

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21

Jenkins, R. B., B. Landenberger, and W. J. Collins. "Late Palaeozoic retreating and advancing subduction boundary in the New England Fold Belt, New South Wales." Australian Journal of Earth Sciences 49, no. 3 (June 2002): 467–89. http://dx.doi.org/10.1046/j.1440-0952.2002.00932.x.

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22

Allan, A. D., and E. C. Leitch. "The nature and origin of eclogite blocks in serpentinite from the Tamworth Belt, New England Fold Belt, eastern Australia." Australian Journal of Earth Sciences 39, no. 1 (February 1992): 29–35. http://dx.doi.org/10.1080/08120099208727998.

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23

Geeve, Richard J., Phillip W. Schmidt, and John Roberts. "Paleomagnetic results indicate pre-Permian counter-clockwise rotation of the southern Tamworth Belt, southern New England Orogen, Australia." Journal of Geophysical Research: Solid Earth 107, B9 (September 2002): EPM 4–1—EPM 4–16. http://dx.doi.org/10.1029/2000jb000037.

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24

Murray, C. G., P. R. Blake, L. J. Hutton, I. W. Withnall, M. A. Hayward, G. A. Simpson, B. G. Fordham, S. E. Bryan, R. J. Holcombe, and C. R. Fielding. "Discussion and Reply: Yarrol terrane of the northern New England Fold Belt: Forearc or backarc?" Australian Journal of Earth Sciences 50, no. 2 (April 2003): 271–93. http://dx.doi.org/10.1046/j.1440-0952.2003.00981.x.

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25

Takeuchi, W. "Vaccinium Obatapaquiniorum (Ericaceae), A New Species from Limestone Environments in the Southern Fold Belt, Papua New Guinea." Harvard Papers in Botany 13, no. 2 (December 2008): 273–75. http://dx.doi.org/10.3100/1043-4534-13.2.273.

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26

Asthana, Deepanker. "Relict clinopyroxenes from within-plate metadolerites of the Petroi Metabasalt, the New England Fold Belt, Australia." Mineralogical Magazine 55, no. 381 (December 1991): 549–61. http://dx.doi.org/10.1180/minmag.1991.055.381.08.

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AbstractRelict clinopyroxenes from metadolerites of the Early Permian Petroi Metabasalt formation, studied by electron microprobe, show a limited compositional range near the diopside-augite boundary in the pyroxene quadrilateral. Clinopyroxene analyses from three metadolerites, grouped in approximately equal Fs contents, define an overall smooth trend between Fs10 and Fs16. This is typical of clinopyroxenes from mildly alkaline basic magmas. Pyroxene stoichiometry suggests high Fe3+ contents (0.04 to 0.20 a.f.u.), which with high Al (0.10 to 0.31 a.f.u.) and Ti (0.03 to 0.08 a.f.u.) implies that CaTiAl2O6 and CaFe3+AlSiO6 are important ‘other components’. Relative Alz in CaFe3+AlSiO6 decreases and consequently CaTiAl2O6 increases with progressive fractionation. This, with the Fe2+:Fe3+ ratios in the Petroi clinopyroxenes, suggests falling ƒO2 in the magma with fractionation. The ƒO2 controlled entry of Alz, Tiy and Nax into the clinopyroxenes and hence the Petroi clinopyroxene trend.
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27

Ishiga, Hiroaki, and Evan C. Leitch. "Reply to discussion: Radiolarian and conodont biostratigraphy of siliceous rocks from the New England Fold Belt." Australian Journal of Earth Sciences 36, no. 1 (March 1989): 142–43. http://dx.doi.org/10.1080/14400958908527959.

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28

Offler, Robin, Martin Hand, and Richard Bale. "bo and illite crystallinity studies of K-white micas in rocks from forearc basin and accretionary complex sequences, Southern New England Fold Belt, N.S.W., Australia. Etude de bo et de la cristallinité de l'illite des micas blancs potassiques dans des roches du bassin d'avant-arc et des séquences du complexe d'accrétion dans la zone de plissement du Sud de la Nouvelle-Angleterre (Nouvelle-Galles du Sud, Australie)." Sciences Géologiques. Bulletin 40, no. 3 (1987): 245–54. http://dx.doi.org/10.3406/sgeol.1987.1764.

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29

Roberts, J., X. Wang, and M. Fanning. "Stratigraphy and correlation of Carboniferous ignimbrites, Rocky Creek region, Tamworth Belt, Southern New England Orogen, New South Wales*." Australian Journal of Earth Sciences 50, no. 6 (December 2003): 931–54. http://dx.doi.org/10.1111/j.1400-0952.2003.01035.x.

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30

Cawood, Peter A., and Richard H. Flood. "Geochemical character and tectonic significance of Early Devonian keratophyres in the New England Fold Belt, eastern Australia." Australian Journal of Earth Sciences 36, no. 2 (June 1989): 297–311. http://dx.doi.org/10.1080/08120098908729488.

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31

LEITCH, E. C., V. J. MORAND, C. L. FERGUSSON, R. A. HENDERSON, and P. F. CARR. "Accretion and post-accretion metamorphism in subduction complex terranes of the New England Fold Belt, eastern Australia." Journal of Metamorphic Geology 11, no. 3 (May 1993): 309–18. http://dx.doi.org/10.1111/j.1525-1314.1993.tb00150.x.

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32

Landenberger, B. "Tectonic implications of Rb_Sr biotite ages for the Hillgrove Plutonic Suite, New England Fold Belt, N.S.W., Australia." Precambrian Research 71, no. 1-4 (February 1995): 251–63. http://dx.doi.org/10.1016/0301-9268(94)00064-x.

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33

Bruce, M. C., and Y. Niu. "Early Permian supra‐subduction assemblage of the South Island terrane, Percy Isles, New England Fold Belt, Queensland." Australian Journal of Earth Sciences 47, no. 6 (December 2000): 1077–85. http://dx.doi.org/10.1046/j.1440-0952.2000.00832.x.

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34

Bruce, M. C., and Y. Niu. "Evidence for Palaeozoic magmatism recorded in the Late Neoproterozoic Marlborough ophiolite, New England Fold Belt, central Queensland." Australian Journal of Earth Sciences 47, no. 6 (December 2000): 1065–76. http://dx.doi.org/10.1046/j.1440-0952.2000.00834.x.

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35

Andreani, Louis, Nicolas Loget, Claude Rangin, and Xavier Le Pichon. "New structural constraints on the southern Provence thrust belt (France): evidences for an Eocene shortening event linked to the Corsica-Sardinia subduction." Bulletin de la Société Géologique de France 181, no. 6 (November 1, 2010): 547–63. http://dx.doi.org/10.2113/gssgfbull.181.6.547.

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AbstractThe Eocene shortening directions along the Southern Provence fold-and-thrust belt are commonly assumed to be N-S. We present here new observations and data that allow reinterpreting the structure of the La Nerthe range as a right-lateral transpressive flower structure. Structural data collected along the range argue for an Eocene N145o shortening event. The age of this shortening event is constrained by the fact that faulting and folding affect the Late Cretaceous-Paleocene continental deposits along the northern flank of the La Nerthe range and is sealed by the Miocene marine deposits. Moreover striated fault planes display both horizontal and vertical striae suggesting that they were reactivated during the Oligocene extensional event. We question here the shortening directions along the Southern Provence thrust belt. Structural data suggest both N-S and NNW-SSE shortening directions during the Eocene. During the Eocene the Provence area was in the foreland of a complex orogenic belt that extended from the Betic Cordillera to the Corsica-Sardinia block. This orogenic belt developed along the subduction linked to the convergence between Africa and Eurasia. Although the convergence vector was nearly N-S the NE-SW orientation of the trench may have led to a complex deformation pattern along the orogenic belt with NW-SE and N-S shortening directions that reflected both the along-trench compression and the regional convergence.
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36

Gao, Zihui, Nicholas D. Perez, Brent Miller, and Michael C. Pope. "Competing sediment sources during Paleozoic closure of the Marathon-Ouachita remnant ocean basin." GSA Bulletin 132, no. 1-2 (July 15, 2019): 3–16. http://dx.doi.org/10.1130/b35201.1.

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Abstract The Paleozoic construction of Pangea advanced southwestward from the Appalachian system to the Marathon fold-and-thrust belt in west Texas and progressively closed a remnant ocean basin between Laurentia and Gondwana. The resulting collisional orogen was a potential driver of Ancestral Rocky Mountain tectonism and impacted continental-scale sediment routing. New detrital zircon U-Pb geochronologic and heavy mineral provenance data from Ordovician–Pennsylvanian strata in the Marathon fold-and-thrust belt, and Permian strata in the Guadalupe Mountains of west Texas record changes in sediment provenance during the tectonic development of southwestern Laurentia and the Delaware Basin. In the Marathon fold-and-thrust belt, Ordovician rocks (Woods Hollow and Marathon Formations) record peri-Gondwanan sediment sources prior to continent collision. Syncollisional Mississippian and Pennsylvanian rocks (Tesnus, Haymond, Gaptank Formations) record contributions from distal Appalachian sources, recycled material from the active continental suture, and volcanic arc material from Gondwana. Near the Guadalupe Mountains, postcollisional Permian strata (Delaware Mountain Group) from the northern Delaware Basin margin suggest a dominantly southern catchment that was sourced from the deforming suture and Gondwanan arc. The results demonstrate that both plates and the active suture zone were sources for the siliciclastic wedge, but their proportions differed through time. These results also suggest that the delay between initial late Mississippian suturing in the Marathon region and increased mid-Permian siliciclastic deposition into the northern Delaware Basin may have been linked to a southward catchment expansion that integrated the collisional belt and southern volcanic arc into a broadly north-directed sediment dispersal system.
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37

IVANOV, ANATOLY, YURI AGEEV, ALEXANDER MEZENTSEV, BASIL MOLOCHNY, and VICTOR KONKIN. "Granitoid-hosted gold mineralization in Ikibzyaksky ore field: a new milestone in Baikal-Patom metallogenic province gold potential study." Domestic geology, no. 2 (May 27, 2021): 4–18. http://dx.doi.org/10.47765/0869-7175-2021-10009.

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New data is provided on gold mineralization in the southern Baikal-Patom metallogenic province, Ikibzyakskoye ore field, located in Pravo-Mamakansky deep fault zone separating Patom fold area from Baikal-Vitim volcanic-plutonic belt. For the first time, the metallogenic province was found to comprise granitoid-hosted ore vein-stringer zones with high-grade economic gold sulfide-quartz mineralization. This mineralization is localized within fault shistosity zones manifesting intense beresitization and listvenitization (in metabasite xenoliths).
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38

SHI, GUANZHONG, CHAO LIANG, HUA WANG, and CHUANYAN HUANG. "Superimposed deformation of the Solonker Belt and nearby regions in western Inner Mongolia, China." Geological Magazine 156, no. 5 (April 10, 2018): 811–32. http://dx.doi.org/10.1017/s0016756818000183.

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AbstractThe deformation of the Solonker Belt and nearby regions is helpful for understanding the tectonic evolution of the Central Asian Orogenic Belt. This study carried out structural analysis in the Mandula and Ganqi areas of western Inner Mongolia, including the Solonker Belt, the Southern Orogenic Belt and the northern Yinshan Belt (Langshan range). Our results reveal that the Solonker Belt, the Southern Orogenic Belt and the northern Yinshan Belt underwent two stages (D1 and D2) of deformation during the Mesozoic period. The D1 stage produced the NNE-directed thrusts and asymmetric folds, indicating a NNE–SSW contraction. The northern Yinshan Belt, the Southern Orogenic Belt and the Solonker Belt formed as a series of NNE-verging tectonic nappes. The D2 stage developed the NE-trending folds and the SE- or NW-directed thrusts that cross-cut the D1 structures. The two events of nearly orthogonal or oblique shortening gave rise to the superimposed structures (e.g. fold interference patterns). The quartz veins that filled the fractures of the D1 deformation contain zircons of Middle Triassic U–Pb ages. The new dating data, along with the regional sedimentary hiatus, led us to infer that the D1 stage of deformation occurred in Middle Triassic time and the D2 stage occurred in Late Jurassic time. We consider that the D1 stage of deformation resulted from a convergent event, which might be related to the closure of the Palaeo-Asian Ocean or limited, narrow ocean basins; and the D2 stage of deformation was the far-field result of subduction of the Palaeo-Pacific Ocean and the closure of the Mongol-Okhotsk Ocean.
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39

Leitch, E. C., C. L. Fergusson, R. A. Henderson, and V. J. Morand. "Ophiolitic and metamorphic rocks in the Percy Isles and Shoalwater Bay region, New England Fold Belt, central Queensland." Australian Journal of Earth Sciences 41, no. 6 (December 1994): 571–79. http://dx.doi.org/10.1080/08120099408728167.

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40

Offler, R., and J. Gamble. "Evolution of an intra‐oceanic island arc during the Late Silurian to Late Devonian, New England Fold Belt." Australian Journal of Earth Sciences 49, no. 2 (April 2002): 349–66. http://dx.doi.org/10.1046/j.1440-0952.2002.00923.x.

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41

Morand, V. J. "Structure of the Broome Head Metamorphics and related rocks in the Shoalwater Bay area, northern New England Fold Belt." Australian Journal of Earth Sciences 45, no. 1 (February 1998): 155–67. http://dx.doi.org/10.1080/08120099808728376.

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42

Skilbeck, C. Gregory, and Peter A. Cawood. "Provenance history of a Carboniferous Gondwana margin forearc basin, New England Fold Belt, eastern Australia: modal and geochemical constraints." Sedimentary Geology 93, no. 1-2 (October 1994): 107–33. http://dx.doi.org/10.1016/0037-0738(94)90031-0.

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43

Roberts, J., R. Offler, and M. Fanning. "Carboniferous to Lower Permian stratigraphy of the southern Tamworth Belt, southern New England Orogen, Australia: Boundary sequences of the Werrie and Rouchel blocks." Australian Journal of Earth Sciences 53, no. 2 (April 2006): 249–84. http://dx.doi.org/10.1080/08120090500499263.

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44

Gatehouse, Robyn D., I. S. Williams, and B. J. Pillans. "Fingerprinting windblown dust in south-eastern Australian soils by uranium-lead dating of detrital zircon." Soil Research 39, no. 1 (2001): 7. http://dx.doi.org/10.1071/sr99078.

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The U-Pb ages of fine-grained zircon separated from 2 dust-dominated soils in the eastern highlands of south-eastern Australia and measured by ion microprobe (SHRIMP) revealed a characteristic age ‘fingerprint’ from which the source of the dust has been determined and by which it will be possible to assess the contribution of dust to other soil profiles. The 2 soils are dominated by zircon 400–600 and 1000–1200 Ma old, derived from Palaeozoic granites and sediments of the Lachlan Fold Belt, but also contain significant components 100–300 Ma old, characteristic of igneous rocks in the New England Fold Belt in northern New South Wales and Queensland. This pattern closely matches that of sediments of the Murray-Darling Basin, especially the Mallee dunefield, suggesting that weathering of rocks in the eastern highlands has contributed large quantities of sediment to the arid and semi-arid inland basins via internally draining rivers of the present and past Murray–Darling River systems, where it has formed a major source of dust subsequently blown eastwards and deposited in the highland soils of eastern Australia.
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45

ADAMS, C. J., H. J. CAMPBELL, and W. L. GRIFFIN. "Provenance comparisons of Permian to Jurassic tectonostratigraphic terranes in New Zealand: perspectives from detrital zircon age patterns." Geological Magazine 144, no. 4 (April 25, 2007): 701–29. http://dx.doi.org/10.1017/s0016756807003469.

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U–Pb detrital zircon ages (LAM-ICPMS) are reported for 20 greywackes and sandstones from seven major tectono-stratigraphic terranes of the Eastern Province of New Zealand (Cretaceous to Carboniferous) to constrain sediment provenances. Samples are mainly from three time horizons: Late Permian, Late Triassic and Late Jurassic. Age datasets are analysed as percentages in geological intervals, and in histogram and cumulative probability diagrams. The latter discriminate significant zircon age components in terms of terrane, sample stratigraphic age, component age, precision and percentage (of total set). Zircon age distributions from all samples have persistent, large Triassic–Permian, and very few Devonian–Silurian, populations, features which exclude a sediment provenance from the early Palaeozoic, Lachlan Fold Belt of southeast Australia or continuations in New Zealand and Antarctica. In the accretionary terranes, significant Palaeozoic (and Precambrian) zircon age populations are present in Torlesse and Waipapa terranes, and variably in Caples terrane. In the fore-arc and back-arc terranes, a unimodal character persists in Murihiku and Brook Street terranes, while Dun Mountain–Maitai terrane is more variable, and with Caples terrane, displays a hybrid character. Required extensive Triassic–Permian zircon sources can only be found within the New England Fold Belt and Hodgkinson Province of northeast Australia, and southward continuations to Dampier Ridge, Lord Howe Rise and West Norfolk Ridge (Tasman Sea). Small but significant Palaeozoic (and Precambrian) age components in the accretionary terranes (plus Dun Mountain–Maitai terrane), have sources in hinterlands of the New England Fold Belt, in particular to mid-Palaeozoic granite complexes in NE Queensland, and Carboniferous granite complexes in NE New South Wales. Major and minor components place sources (1) for the older Torlesse (Rakaia) terrane, in NE Queensland, and (2) for Waipapa terrane, in NE New South Wales, with Dun Mountain–Maitai and Caples terrane sources more inshore and offshore, respectively. In Early Jurassic–Late Cretaceous, Torlesse (Pahau) and Waipapa terranes, there is less continental influence, and more isolated, offshore volcanic arc sources are suggested. There is local input of plutonic rock detritus into Pahau depocentres from the Median Batholith in New Zealand, or its northward continuation on Lord Howe Rise. Excepting Murihiku and Brook Street terranes, all others are suspect terranes, with depocentres close to the contemporary Gondwanaland margin in NE Australia, and subsequent margin-parallel, tectonic transport to their present New Zealand position. This is highlighted by a slight southeastward migration of terrane depocentres with time. Murihiku and Brook Street terrane sources are more remote from continental influences and represent isolated offshore volcanic depocentres, perhaps in their present New Zealand position.
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46

Lebinson, Fernando, Martín Turienzo, Natalia Sánchez, Vanesa Araujo, María Celeste D’Annunzio, and Luis Dimieri. "The structure of the northern Agrio fold and thrust belt (37°30’ S), Neuquén Basin, Argentina." Andean Geology 45, no. 2 (March 5, 2018): 249. http://dx.doi.org/10.5027/andgeov45n2-3049.

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The Agrio fold and thrust belt is a thick-skinned orogenic belt developed since Late Cretaceous in response to the convergence between the Nazca and South American plates. The integration of new structural field data and seismic line interpretation allowed us to create two balanced cross-sections, which help to analyse the geometry of both thick and thin-skinned structures, to calculate the tectonic shortenings and finally to discuss the main mechanisms that produced this fold and thrust belt. The predominantly NNW-SSE structures show varying wavelengths, and can be classified into kilometer-scale first order basement involved structures and smaller second, third and fourth order fault-related folds in cover rocks with shallower detachments. Thick-skinned structures comprise fault-bend folds moving into the sedimentary cover, mainly along Late Jurassic evaporites, which form basement wedges that transfer the deformation to the foreland. Thus, shortenings in both basement and cover rocks must be similar and consequently, by measuring the contraction accounted for thin-skinned structures, is possible to propose a suitable model for the thick skinned deformation. The balanced cross-sections indicate shortenings of 11.2 km (18%) for the northern section and 10.9 km (17.3%) for the southern section. These values are different from the shortenings established by previous works in the region, reflecting differences in the assumed model to explain the basement-involved structures. According to our interpretation, the structural evolution of this fold and thrust belt was controlled by major basement-involved thrust systems with subordinate influence of inversion along pre-existing normal faults during the Andean compression.
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47

Morris, Paul A. "Volcanic Arc Reconstruction Using Discriminant Function Analysis of Detrital Clinopyroxene and Amphibole from the New England Fold Belt, Eastern Australia." Journal of Geology 96, no. 3 (May 1988): 299–311. http://dx.doi.org/10.1086/629221.

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48

LEELANANDAM, C., K. BURKE, L. D. ASHWAL, and S. J. WEBB. "Proterozoic mountain building in Peninsular India: an analysis based primarily on alkaline rock distribution." Geological Magazine 143, no. 2 (March 2006): 195–212. http://dx.doi.org/10.1017/s0016756805001664.

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Peninsular India was assembled into a continental block c. 3 million km2 in area as a result of collisions throughout the length of a 4000 km long S-shaped mountain belt that was first recognized from the continuity of strike of highly deformed Proterozoic granulites and gneisses. More recently the recognition of a variety of tectonic indicators, including occurrences of ophiolitic slivers, Andean-margin type rocks, a collisional rift and a foreland basin, as well as many structural and isotopic age studies have helped to clarify the history of this Great Indian Proterozoic Fold Belt. We here complement those studies by considering the occurrence of deformed alkaline rocks and carbonatites (DARCs) in the Great Indian Proterozoic Fold Belt. One aim of this study is to test the recently published idea that DARCs result from the deformation of alkaline rocks and carbonatites (ARCs) originally intruded into intra-continental rifts and preserved on rifted continental margins. The suggestion is that ARCs from those margins are transformed into DARCs during continental, or arc–continental, collisions. If that idea is valid, DARCs lie on rifted continental margins and on coincident younger suture zones; they occur in places where ancient oceans have both opened and closed. Locating sutures within mountain belts has often proved difficult and has sometimes been controversial. If the new idea is valid, DARC distributions may help to reduce controversy. This paper concentrates on the Eastern Ghats Mobile Belt of Andhra Pradesh and Orissa, where alkaline rock occurrences are best known. Less complete information from Kerala, Tamil Nadu, Karnataka, West Bengal, Bihar and Rajasthan has enabled us to define a line of 47 unevenly distributed DARCs with individual outcrop lengths of between 30 m and 30 km that extends along the full 4000 km length of the Great Indian Proterozoic Fold Belt. Ocean opening along the rifted margins of the Archaean cratons of Peninsular India may have begun by c. 2.0 Ga and convergent plate margin phenomena have left records within the Great Indian Proterozoic Fold Belt and on the neighbouring cratons starting at c. 1.8 Ga. Final continental collisions were over by 0.55 Ga, perhaps having been completed at c. 0.75 Ga or at c. 1 Ga. Opening of an ocean at the Himalayan margin of India by c. 0.55 Ga removed an unknown length of the Great Indian Proterozoic Fold Belt. In the southernmost part of the Indian peninsula, a line of DARCs, interpreted here as marking a Great Indian Proterozoic Fold Belt suture, can be traced within the Southern Granulite Terrain almost to the Achankovil-Tenmala shear zone, which is interpreted as a strike-slip fault that also formed at c. 0.55 Ga.
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49

Klootwijk, C. "Paleomagnetism of the Carboniferous–Permian Myall blocks, Tamworth Belt, southern New England Orogen: Permian counterclockwise rotations and Triassic clockwise rotation." Australian Journal of Earth Sciences 69, no. 4 (November 3, 2021): 562–90. http://dx.doi.org/10.1080/08120099.2022.1989033.

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50

ROBERTS, J., R. OFFLER, and M. FANNING. "Upper Carboniferous to Lower Permian volcanic successions of the Carroll-Nandewar region, northern Tamworth Belt, southern New England Orogen, Australia*." Australian Journal of Earth Sciences 51, no. 2 (April 2004): 205–32. http://dx.doi.org/10.1111/j.1400-0952.2004.01053.x.

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