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Academic literature on the topic 'Paleozoic orogenies'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Paleozoic orogenies"

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Heredia, N., J. García-Sansegundo, G. Gallastegui, P. Farias, R. Giacosa, J. L. Alonso, P. Busquets, et al. "Evolución Geodinámica de los Andes argentino-chilenos y la Península Antártica durante el Neoproterozoico tardío y el Paleozoico Late Neoproterozoic-Paleozoic geodynamic evolution of the Argentine-Chilean Andes and the Antarctic Peninsula." Trabajos de Geología 36, no. 36 (September 12, 2018): 237. http://dx.doi.org/10.17811/tdg.36.2016.237-278.

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Resumen: Durante el Neoproterozoico tardío y el Paleozoico, el actual segmento argentino-chileno de la Cordillera de los Andes y desde finales del Paleozoico la Península Antártica, formaron parte del margen suroccidental de Gondwana. Durante este periodo de tiempo, a dicho margen se fue acrecionando un conjunto de fragmentos continentales de tamaño y aloctonía variable, dando lugar en el Paleozoico a seis orogenias de diferente extensión temporal y espacial: Pampeana (Ediacárico-Cámbrico temprano), Famatiniana (Ordovícico Medio-Silúrico), Chánica (Devónico Medio-Carbonífero temprano), Oclóyica (Ordovícico Medio-Devónico), Gondwánica (Devónico Medio-Pérmico medio) y Tabarin (Pérmico tardío-Triásico). Todas estas orogenias son colisionales, salvo la Tabarin y la Gondwánica al sur de los 38º S.Palabras clave: Evolución geodinámica, Paleozoico, Andes argentino-chilenos, Península Antártica, Orógeno Oclóyico, Orógeno Famatiniano, Orógeno Chánico, Orógeno Gondwánico, Orógeno Tabarin.Abstract: During the late Neoproterozoic and Paleozoic times, the Argentine-Chilean Andes, -and since the late Paleozoic the Antarctic Peninsula,- formed part of the southwestern margin of Gondwana. During this period of time, several continental fragments of variable extensión and allochtonie were successively accreted to that margin, resulted in six Paleozoic orogenies of different temporal and spatial extension: Pampean (Ediacaran-early Cambrian), Famatinian (Middle Ordovician-Silurian), Chanic (Middle Devonian-early Carboniferous), Ocloyic (Middle Ordovician-Devonian), Gondwanan (Middle Devonian-middle Permian) and Tabarin (late Permian-Triassic). All these orogenies had a collisional character, with the exception of the Tabarin and the Gondwanan south of 38º S.Keywords: Geodynamic evolution, Paleozoic, Argentine-Chilean Andes, Antarctic Peninsula, Ocloyic orogen, Famatinian orogen, Chanic orogen, Gondwanan orogen, Tabarin orogen.
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Weinberg, Roberto F., Raul Becchio, Pablo Farias, Nestor Suzaño, and Alfonso Sola. "Early Paleozoic accretionary orogenies in NW Argentina: Growth of West Gondwana." Earth-Science Reviews 187 (December 2018): 219–47. http://dx.doi.org/10.1016/j.earscirev.2018.10.001.

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Ruban, Dmitry A., Moujahed I. Al-Husseini, and Yumiko Iwasaki. "Review of Middle East Paleozoic plate tectonics." GeoArabia 12, no. 3 (July 1, 2007): 35–56. http://dx.doi.org/10.2113/geoarabia120335.

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ABSTRACT The Paleozoic Middle East terranes, neighboring the present-day Arabian and Levant plates, are shown by most authors to consist of ten major tectonic units: (1 and 2) the Helmand and Farah terranes of Afghanistan, southwest Pakistan and southeast Turkmenistan; (3 to 6) the Alborz, Central Iran (Lut, Yazd and Tabas) and Sanandaj-Sirjan terranes of Iran, and Northwest Iran (possibly extending into eastern Turkey); (7 and 8) the Pontides and Taurides terranes of Turkey; and (9 and 10) the Greater and Lesser Caucasus terranes between the Caspian and Black seas (Armenia, Azerbaijan, Georgia and southwest Russia). Published plate-tectonic reconstructions indicate that all ten terranes may have broken off from either: (1) the Gondwana Supercontinent in the mid-Silurian as part of the Hun Superterrane; or (2) the Pangea Supercontinent during the mid-Permian - Triassic as part of the Cimmeria Superterrane. To the north of Gondwana and Pangea, three successively younger Tethyan oceans evolved: (1) Proto-Tethys (Cambrian - Devonian); (2) Paleo-Tethys (mid-Silurian - Mesozoic); and (3) Neo-Tethys (mid-Permian - Cenozoic). Two regional Paleozoic unconformities in the Arabian Plate are generally linked to major regional-scale structural events, and commonly correlated to the Caledonian and Hercynian orogenies. These orogenies took place many thousands of kilometers away from the Arabian Plate and are considered unlikely causes for these unconformities. Instead, the breakaway of the Hun and Cimmeria superterranes are considered as alternative near-field tectonic sources. The older unconformity (middle Paleozoic event), represented by a mid-Silurian to Middle Devonian hiatus in North Arabia (Iraq and Syria), reflects an episode of epeirogenic uplift, which might be related to the mid-Silurian rift of the Hun Superterrane. The younger mid-Carboniferous Arabia-wide angular unconformity involved compressional faulting and epeirogenic uplift, and might be related to the earliest phase of subduction by the Paleo-Tethyan crust beneath Cimmeria (Sanandaj-Sirjan and nearby regions) before it broke off. Based on our review and regional considerations, we assign the Helmand, Farah, Central Iran, Alborz, Sanandaj-Sirjan, Northwest Iran, Lesser Caucasus, Taurides and Pontides to Cimmeria, whereas the Greater Caucasus is considered Hunic.
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Blakey, Ron. "Paleotectonic and paleogeographic history of the Arctic region." Atlantic Geology 57 (January 24, 2021): 007–39. http://dx.doi.org/10.4138/atlgeol.2021.002.

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Paleogeographic maps represent the ultimate synthesis of complex and extensive geologic data and express pictorially the hypothetical landscape of some region during a given time-slice of deep geologic time. Such maps, presented as paired paleogeographic and paleotectonic reconstructions, have been developed to portray the geologic history of the greater Arctic region over the past 400 million years. Collectively they depict four major episodes in the development of the Arctic region. The first episode witnessed early and middle Paleozoic terrane assembly and accretion during the Caledonian and Ellesmerian orogenies, which brought together many pieces of the Arctic collage along the northern margin of Laurussia. During the second phase, the assembly of Pangea in the late Paleozoic joined Siberia to Laurussia, an entity that became Laurasia during the subsequent break-up of Pangea. Then, Mesozoic subduction and terrane accretion constructed the Cordilleran margin and opened the Canada Basin. Finally, Cenozoic North Atlantic sea-floor spreading fully opened the Arctic Ocean.
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Wu, Li-Guang, Xian-Hua Li, Weihua Yao, Xiao-Xiao Ling, and Kai Lu. "Insights into Polyphase Phanerozoic Tectonic Events in SE China: Integrated Isotopic Microanalysis of Detrital Zircon and Monazite." Lithosphere 2020, no. 1 (October 5, 2020): 1–17. http://dx.doi.org/10.2113/2020/8837978.

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Abstract Widespread Paleozoic and Mesozoic granites are characteristics of SE China, but the geodynamic mechanisms responsible for their emplacement are an issue of ongoing debate. To shed new light on this issue, we present an integrated geochronological and isotopic study of detrital zircon and monazite from Cambrian metasandstones and modern beach sands in the Yangjiang region, SE China. For the Cambrian metasandstone sample, detrital zircon displays a wide age range between 490 and 3000 Ma, while monazite grains record a single age peak of 235 Ma. The results suggest that a significant Triassic (235 Ma) metamorphic event is recorded by monazite but not zircon. For the beach sand sample, detrital zircon ages show six peaks at ca. 440, 240, 155, 135, 115, and 100 Ma, whereas detrital monazite yields a dominant age peak at 237 Ma and a very minor age peak at 435 Ma. Beach sand zircon displays features that are typical of a magmatic origin. Their Hf–O isotopes reveal two crustal reworking events during the early Paleozoic and Triassic, in addition to one juvenile crustal growth event during the Jurassic–Cretaceous. The beach sand monazite records intense Triassic igneous and metamorphic events with significant crustal reworking. Such early Paleozoic and Triassic geochemical signatures of detrital zircon and monazite suggest they were derived from granitoids and metamorphic rocks which formed in intraplate orogenies, i.e., the early Paleozoic Wuyi–Yunkai Orogeny and Triassic Indosinian Orogeny. The Jurassic–Cretaceous signature of detrital zircon may reflect multistage magmatism that was related to subduction of the Paleo-Pacific Plate beneath SE China.
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Aalto, K. "Clarence King's Geology." Earth Sciences History 23, no. 1 (January 1, 2004): 9–31. http://dx.doi.org/10.17704/eshi.23.1.rx018782662jv071.

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Clarence King (1842-1901) studied geology at Yale, served as a volunteer on Josiah Dwight Whitney's (1819-1896) Geological Survey of California, and directed the Fortieth Parallel Survey (1867-1872) from the Sierra Nevada across the Rocky Mountains, topo-graphically and geologically mapping some 100,000 square miles. He established a framework for orogenic history of the American Cordillera that has remained unchanged. Within this framework he recognized what we know today as the Sonoma, Sevier, and Laramide orogenies. He noted that folding of Paleozoic strata in the Great Basin recorded east-west crustal shortening, he delineated trends of Laramide folds, he determined that extensional Tertiary faulting that accompanied rhyolitic volcanism resulted in dislocation of old folds, and that ranges were broken into irregular blocks with considerable vertical displacement. King rejected strict Lyellian uniformitarianism and related Darwinian evolution to episodes of enhanced selection pressure engendered by natural catastrophes. His refinement to 24 Ma (million years) of Kelvin's earth age estimate from terrestrial refrigeration reinforced his conception that inadequate time existed to explain the Fortieth-Parallel geologic record by uniformitarianism, and that accelerated geologic processes best accounted for episodes of uplift/subsidence, faulting, volcanism, and landscape degradation. King thus stands out as an early actualist, quite modern in his approach to event stratigraphy.
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Stephens, Michael B. "Chapter 1 Introduction to the lithotectonic framework of Sweden and organization of this Memoir." Geological Society, London, Memoirs 50, no. 1 (2020): 1–15. http://dx.doi.org/10.1144/m50-2019-21.

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AbstractThe solid rock geology of Sweden comprises three principal components: (1) Proterozoic and (locally) Archean rocks belonging to the western part of the Fennoscandian Shield; (2) Phanerozoic and (locally) Neoproterozoic sedimentary cover rocks deposited on top of this ancient crust; and (3) the early to mid-Paleozoic (0.5–0.4 Ga) Caledonide orogen. Earlier compilations have applied different principles for the subdivision of the geology in the Fennoscandian Shield and the Caledonide orogen. A uniform lithotectonic framework has been developed here. Crustal segments affected by orogenesis have been identified and their ages determined by the youngest tectonothermal event. Four ancient mountain belts and six orogenies are preserved. Solid rocks outside the orogens have been assigned to different magmatic complexes or sedimentary successions based on their time of formation and tectonic affiliation. This approach allows relicts of older mountain-building activity to be preserved inside a younger orogen – for example, the effects of the Archean (2.8–2.6 Ga) orogeny inside the 2.0–1.8 Ga Svecokarelian orogen and Paleo–Mesoproterozoic (1.7–1.5 and 1.5–1.4 Ga) mountain-building processes inside the 1.1–0.9 Ga Sveconorwegian orogen. Sweden's five largest mineral districts are addressed in the context of this new lithotectonic framework, which forms the architecture to the contents of the chapters in this Memoir.
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Piqué, Alain, and James W. Skehan. "Late Paleozoic Orogenies in western Africa and eastern North America: The diachronous closure of Theic Ocean." Tectonics 11, no. 2 (April 1992): 392–404. http://dx.doi.org/10.1029/91tc01606.

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Zhang, Jianxin, Chris Mattinson, Shengyao Yu, Yunshuai Li, Xingxing Yu, Xiaohong Mao, Zenglong Lu, and Yingbao Peng. "Two contrasting accretion v. collision orogenies: insights from Early Paleozoic polyphase metamorphism in the Altun–Qilian–North Qaidam orogenic system, NW China." Geological Society, London, Special Publications 474, no. 1 (May 18, 2018): 153–81. http://dx.doi.org/10.1144/sp474.8.

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Galliski, Miguel Ángel, María Florencia Márquez-Zavalía, Encarnación Roda-Robles, and Albrecht von Quadt. "The Li-Bearing Pegmatites from the Pampean Pegmatite Province, Argentina: Metallogenesis and Resources." Minerals 12, no. 7 (June 30, 2022): 841. http://dx.doi.org/10.3390/min12070841.

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The Li-bearing pegmatites of the Pampean Pegmatite Province (PPP) occur in a rare-element pegmatite belt developed mainly in the Lower Paleozoic age on the southwestern margin of Gondwana. The pegmatites show Li, Rb, Nb ≤ Ta, Be, P, B, Bi enrichment, and belong to the Li-Cs-Ta (LCT) petrogenetic family, Rare-Element-Li (REL-Li) subclass; most of them are of complex type and spodumene subtype, some are of albite-spodumene type, and a few of petalite subtype. The origin of the pegmatites is attributed predominantly to fractionation of fertile S-type granitic melts produced by either fluid-absent or fluid-assisted anatexis of a thick pile of Gondwana-derived turbiditic sediments. Most of the pegmatites are orogenic (530–440 Ma) and developed during two overlapped collisional orogenies (Pampean and Famatinian); a few are postorogenic (~370 Ma), related to crustal contaminated A-type granites. The pegmatites were likely intruded in the hinterland, preferably in medium-grade metamorphic rocks with PT conditions ~200–500 MPa and 400–650 °C, where they are concentrated in districts and groups. Known combined resources add up 200,000 t of spodumene, with variable grades between 5 and 8 wt.% Li2O. The potential for future findings and enlargement of the resources is high, since no systematic exploration program has yet been developed.
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Dissertations / Theses on the topic "Paleozoic orogenies"

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Kashubin, Artem. "Seismic Studies of Paleozoic Orogens in SW Iberia and the Middle Urals." Doctoral thesis, Uppsala universitet, Geofysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9405.

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Controlled source seismic methods were employed in this study to investigate the reflectivity and velocity structure of two Hercynian orogens – the Uralides and Variscides. Conventional common depth point (CDP) sections from five reflection seismic campaigns and a velocity model obtained from tomographic inversion of wide-angle observations were the main datasets studied from the Middle Urals. These were complemented with the near-vertical seismic sections and velocity models from the Southern Urals. In the Variscides, conventional CDP processing, along with non-standard processing and synthetic data modeling, were used to obtain and interpret reflection seismic images of the Southwestern Iberian crust. Although, the Uralian and Variscan belts were formed in Late Paleozoic time in apparently similar plate collisional settings, a comparison of the seismic results show that the crust of these two orogens looks quite different at depth. In the Urals, collision of Baltica with Asian terranes (Siberia and Kazakhstan) resulted in a highly diversely reflective crust of 40-45 km thickness. The axial zone of the orogen is characterized by a high velocity crustal root of diffuse reflectivity and an imbricated Moho, with a crustal thickness reaching 55-60 km. The Moho discontinuity is marked by a sharp decrease in reflectivity and is well imaged in most locations except in the crustal root zone. The Southwestern Iberian Variscan crust is 30-35 km thick and is characterized by a highly reflective two-layered structure that resulted from collision of Luarussia and Gondwana, including terranes in-between them. This type of crustal structure is very similar to those imaged in other regions of the Variscan belt in the Europe. The Moho discontinuity is flat and appears to be the deepest reflection. This thesis compares the deep structure of the two orogens and interprets mountain building processes related to late Paleozoic plate movements.
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Kirscher, Uwe. "Paleozoic paleogeography of the south western part of the Central Asian Orogenic Belt." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-182473.

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The Central Asian Orogenic Belt (CAOB) is one of the world's largest accretionary orogens, which was active during most of the Paleozoic. In recent years it has again moved into focus of the geological community debating how the acrreted lithospheric elements were geographical arranged and interacting prior and/or during the final amalgamation of Kazakhstania. In principal two families of competing models exist. One possible geodynmaic setting is based on geological evidence that a more or less continuous giant arc connecting Baltica and Siberia in the early Paleozoic was subsequently dissected and buckled. Alternatively an archipelago setting, similar to the present day south west Pacific was proposed. This thesis collates three studies on the paleogeography of the south western part of the CAOB from the early Paleozoic until the latest Paleozoic to earliest Mesozoic. It is shown how fragments of Precambrian to early Paleozoic age are likely to have originated from Gondwana at high southerly paleolatitudes (~500 Ma), which got then accreted during the Ordovician (~460 Ma), before this newly created terrane agglomerate (Kazakhstania) migrated northwards crossing the paleo-equator. During the Devonian and the latest Early Carboniferous (~330 Ma) Kazakhstania occupied a stable position at about ~30°N. At least since this time the area underwent several stages of counterclockwise rotational movements accompanying the final amalgamation of Eurasia (~320 - ~270 Myr). This overall pattern of roughly up to 90° counterclockwise bending was replaced by internal relative rotational movements in the latest Paleozoic, which continued probably until the early Mesozoic or even the Cenozoic. In Chapter 2 a comparison of declination data acquired by a remagnetization process during folding in the Carboniferous and coeval data from Baltica and Siberia lead to a documentation and quantification of rotational movements within the Karatau Mountain Range. Based on this results it is very likely that the rotational reorganization started in the Carboniferous and was active until at least the early Mesozoic. Additionally, the data shows that maximal declination deviation increases going from the Karatau towards the Tianshan Mountains (i.e. from North to South). This observation supports models claiming that Ural mountains, Karatau and Tianshan once formed a straight orogen subsequently bent into a orocline. The hinge of this orocline is probably hidden under the sediments of the Caspian basin. In chapter 3 we show that inclination shallowing has affected the red terrigenous sediments of Carboniferous age from the North Tianshan. The corrected inclination values put this part of the Tianshan in a paleolatitude of around 30°N during Carboniferous times. These results contradict previously published paleopositions of the area and suggest a stable latitudinal position between the Devonian and the Carboniferous. Chapter 4 presents paleomagnetic data from early Paleozoic rocks from within the North Tianshan. They imply a second collisional accretion event of individual terranes in the Ordovician. To further constrain the dimensions of these early Paleozoic terranes, chapter 5 presents a compilation of all available paleomagnetic data from the extended study region of southern Kazakhstan and Kyrgyzstan. Apart from a broad coherence of paleolatitudes of all studies at least since the Ordovician and the exclusive occurrence of counterclockwise declination deviations, no areas with the same rotational history can be detected. Also a clear trend caused by oroclinal bending can not be observed. We conclude that first order counterclockwise oroclinal bending, shown in chapter 2, resulted in brittle deformation within the mountain belt and local block rotations. In order to improve our understanding of intra-continental deformation a study combining the monitoring of recent deformation (Global Positioning System, GPS) with a paleomagnetic study of Cenozoic age in the greater vicinity of the Talas-Ferghana fault has been undertaken in chapter 6. The major task was to distinguish between continuous versus brittle deformation. As it turned out the GPS signal indicates rather continuous and consistent counterclockwise rotational movements of the order of ~2° per Myr. This is in contrast to our paleomagnetic results, where even within fault bounded areas the error intervals of the rotations do always overlap. This indicates that a pure block model seems not appropriate even to explain Cenozoic paleomagnetic data. If this means that also Paleozoic rocks have been affected by complex recent deformation, and that the Paleozoic rotational pattern has been obscured by this, can not be decided based on the present data set. It means, however, that interpreting Paleozoic rotational data from this area has to be done with great caution.
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Yan, Chaolei. "The Neoproterozoic tectonic evolution of the western Jiagenen Orogenic Belt and its Early Paleozoic-Mesozoic tectonic reworking." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2041/document.

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La chaîne de collision d'âge néoprotérozoïque de Jiangnan, orientée NE-SW, marque la limite entre les blocs duYangtze et de Cathaysia. Son évolution tectonique reste encore débattue. Une des questions les plus controversées est l'âge de la collision entre les deux blocs. Afin d'acquérir une meilleure compréhension de ce problème, nous avons collecté des échantillons dans les couches sédimentaires situées au-dessus et au-dessous de la discordance dans le but de comparer les spectres d'âge des zircons détritiques et aussi de les confronter à ceux décrits dans les séries néoprotérozoïques des régions du Yangtze, Jiangnan et Cathaysia. En outre, nous nous sommes intéressés aux plutons granitiques d'âge néoproterozoïque de Sanfang et Yuanbaoshan, de type-S, situés dans la partie occidentale de la chaîne de Jiangnan afin de tracer l'évolution tectonique de la région depuis 830 Ma par la mise en œuvre de méthodes pluridisciplinaires : géologie structurale, géochronologie U-Pb, AMS, modélisation gravimétrique et thermochronologie Argon.Notre étude montre les résultats suivants : (i) La chaîne de Jiangnan s'est formée par la collision des blocs de Yangtze et Cathaysia entre ca. 865 and 830 Ma ; (ii) Les intrusions granitiques de 830 Ma se sont mises en place dans des formations encaissantes du groupe Sibao plissées et faillées. Les plutons ont été construits par accumulation latérale E-W de filons N-S, avec un écoulement horizontal du magma du sud vers le nord ; (iii). Un cisaillement ductile du haut vers l'Ouest a été reconnu dans la partie supérieure des plutons. Des âges Ar/Ar vers 420 Ma obtenus sur plusieurs grains de muscovite et biotite déformés impliquent que le cisaillement ductile peut être : a) formé pendant l'orogenèse du Paléozoïque inférieur de Chine du Sud, ou b) pendant la mise en place des plutons au Néoprotérozoïque dans une croûte chaude, sous la température de fermeture du chronomètre argon, puis lors de l'orogenèse du Paléozoïque inférieur, ce domaine crustal de Chine du Sud est passé au-dessous de 350°C; (iv) Durant la période 420-240 Ma, la région de Sanfang-Yuanbaoshana connu un refroidissement lent qui pourrait correspondre au ré-équilibrage isostatique de la croûte
The Jiangnan Orogenic Belt is a NE-SW trending Neoproterozoic collisional suture, marking the boundary between the Yangtze Block and the Cathaysia Block. Its tectonic evolution is still debated. One of the most controversial questions is the timing of the collision between the Yangtze and Cathaysia blocks. In order to have a better understanding of this problem, we have collected the sedimentary rocks from the strata both overlying and underlying the Neoproterozoic unconformities to compare the detrital zircon age spectra between them, as well as to compare the detrital zircon spectra of Neoproterozoic sequences among the Yangtze, Jiangnan and Cathaysia regions. Moreover, we paid attention to the Neoproterozoic S-type granite plutons located in the western Jiangnan region in order to trace the crustal evolution in the Sanfang-Yuanbaoshan area since 830 Ma by multidisciplinary methods, including structural geology, geochronology, AMS, gravity modelling and Argon isotopic dating.Our study shows that : (i) The Jiangnan Orogenic Belt was built up due to the assembly of the Yangtze and Cathaysia blocks between ca. 865 and 830 Ma ; (ii) The 830 Ma granitic magma intruded into the pre-existing folds and faults in the Sibao group, the tongue-and/orsill-shaped plutonswere constructed by anE-W lateral accumulation of N-S oriented dykeswith adominantly northward horizontal magma flow from south to north ; (iii)A top-to-the-W ductile shearband has been identified on the top of plutons, (iv) the coherent mica Ar-Ar age of ca. 420 Ma, obtained from the deformed muscovite, implies that this shearing may be formed either a)during the Early Paleozoicorogeny, or b) during the Neoproterozoic plutons emplacement, then the plutons were exhumed by the Paleozoic orogeny ; (iv) During the 420-240 Ma period, the Sanfang-Yuanbaoshan area has experienced a slow cool ingrate, which may correspond to the isostatic re-equilibration of the crust
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Cai, Keda, and 蔡克大. "Magmatism and tectonic evolution of the Chinese Altai, NW China: insights from the paleozoic mafic andfelsic intrusions." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47147192.

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Kirscher, Uwe [Verfasser], and Valerian [Akademischer Betreuer] Bachtadse. "Paleozoic paleogeography of the south western part of the Central Asian Orogenic Belt : paleomagnetic constraints / Uwe Kirscher. Betreuer: Valerian Bachtadse." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2015. http://d-nb.info/1072038390/34.

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Wong, Po-wan Kenny, and 王步雲. "Paleozoic tectonic evolution of the Chinese Altai Orogen: contraints from geochemical and geochronologic studies ofmafic rocks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B44920878.

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Worthington, James R., Paul Kapp, Vladislav Minaev, James B. Chapman, Frank K. Mazdab, Mihai N. Ducea, Ilhomjon Oimahmadov, and Mustafo Gadoev. "Birth, life, and demise of the Andean-syn-collisional Gissar arc: Late Paleozoic tectono-magmatic-metamorphic evolution of the southwestern Tian Shan, Tajikistan." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/626289.

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The amalgamation of the Central Asian Orogenic Belt in the southwestern Tian Shan in Tajikistan is represented by tectono-magmatic-metamorphic processes that accompanied late Paleozoic ocean closure and collision between the Karakum-Tarim and Kazakh-Kyrgyz terranes. Integrated U-Pb geochronology, thermobarometry, pseudosection modeling, and Hf geochemistry constrain the timing and petro-tectonic nature of these processes. The Gissar batholith and the Garm massif represent an eastward, along-strike increase in paleodepth from upper-batholith (similar to 21-7km) to arc-root (similar to 36-19km) levels of the Andean-syn-collisional Gissar arc, which developed from similar to 323-288Ma in two stages: (i) Andean, I-type granitoid magmatism from similar to 323-306Ma due to northward subduction of the Gissar back-arc ocean basin under the Gissar microcontinent, which was immediately followed by (ii) syn-collisional, I-S-type granitoid magmatism in the Gissar batholith and the Garm massif from similar to 304-288Ma due to northward subduction/underthrusting of Karakum marginal-continental crust under the Gissar microcontinent. A rapid isotopic pull-up from similar to 288-286Ma signals the onset of juvenile, alkaline-syenitic, post-collisional magmatism by similar to 280Ma, which was driven by delamination of the Gissar arclogite root and consequent convective asthenospheric upwelling. Whereas M-HT/LP prograde metamorphism in the Garm massif (650-750 degrees C/6-7kbar) from similar to 310-288Ma was associated with subduction-magma inundation and crustal thickening, HT/LP heating and decompression to peak-metamorphic temperatures (similar to 800-820 degrees C/6-4kbar) at similar to 2886Ma was driven by the transmission of a post-collisional, mantle-derived heat wave through the Garm-massif crust.
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Zhao, Pan. "L'évolution tectonique du Paléozoïque supérieur de la ceinture orogénique de l'Asie centrale du Centre-Oriental de la Mongolie intérieure." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2028/document.

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Le Centre-Est de la Mongolie intérieure, faisant la partie sud-est de la Ceinture Orogénique de l'Asie Centrale (CAOB), est une zone de clé pour étudier l'histoire de l’accrétion-collision entre la Chine du Nord (NCC) et les blocs continentaux du Nord. Les contraintes du cadre tectonique et de la connaissance de l’évolution tectonique sont importantes pour comprendre l’accrétion de la CAOB car il n’y a pas de consensus sur le mode et la période de l'accrétion entre NCC et les blocs du Nord. Par conséquent, des études pluridisciplinaires ont été effectuées sur les roches sédimentaires et magmatiques du Paléozoïque supérieur dans le centre-oriental de la Mongolie Intérieure. Sur la base de nos études sédimentologiques, géochronologiques, géochimiques et paléomagnétiques, et compte tenu des résultats précédents en pétrographie, géochimie et paléontologie, l'évolution sédimentaire et tectonique du Paléozoïque supérieur du Centre-Oriental de la Mongolie Intérieure a été bien établie. Les études détaillées en sédimentologie et géochimie montrent une transition entre les dépôts molassiques du Dévonien à la dénudation du Carbonifère inférieur et les sédiments marins du Carbonifère supérieure vers les dépôts de bassin d'extension au Permien. D’après nos analyses détaillées des faciès sédimentaires, des caractéristiques géochimiques des roches magmatiques et nos données paléomagnétiques, nous proposons un modèle géodynamique de subduction-collision-extension post-orogénique pour le Paléozoïque au Centre-Oriental de la Mongolie Intérieure
Central-eastern Inner Mongolia, located in the southeastern part of the Central Asian Orogenic Belt (CAOB), is a key area to study the collisional-accretionary history between the North China Craton (NCC) and the northern continental blocks. The establishment of precise constraints of this tectonic framework and evolutional history are important to understand the accretion of CAOB. However, no any consensus has been achieved about the way and the timing of the accretion between NCC and the northern blocks. Therefore, multidisciplinary studies have been carried out on the Late Paleozoic strata and magmatic rocks in central-eastern Inner Mongolia. Based on our sedimentological analyses, detrital zircon geochronological constraints, geochemical studies and paleomagnetic investigations, integrating the previous results in petrology, geochemistry and paleontology, the Late Paleozoic sedimentary-tectonic evolution of the central-eastern Inner Mongolia has been established. Detailed sedimentological and geochemical studies show a transition from the Devonian molassic deposits to the Early Carboniferous denudation and from the Late Carboniferous inland-sea sediments to the Permian extensional basin deposits. According to the comprehensive analyses on sedimentary facies, geochemical characteristics and paleomagnetic data, we propose a Paleozoic subduction-collision- post-orogenic extension tectonic model for central-eastern Inner Mongolia
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Kerdjidj, Kamel. "Application de la petrographie et de la geochimie organique a l'histoire thermique de la partie sud-est du bassin triasique du sahara nord-oriental (algerie)." Orléans, 1987. http://www.theses.fr/1987ORLE2051.

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Les regions de gassi touil et de rhourde nauss se situent sur la dorsale amguid-el biod dans la zone des horsts. Etude du point de vue structural. Les phases hercyniennes et autrichiennes sont les plus importantes dans ces regions. Reconstitution de l'histoire thermique basee sur l'interpretation des transformations thermiques subies par les constituants organiques ou mineraux au cours de leur enfouissement. Le gradient geothermique faible au paleozoique pour l'ensemble des regions s'est poursuivi durant le mesozoique dans la region de rhom de nauss par contre il a fortement varie dans celle de gassi touil
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Delvolvé, Jean-Jacques. "Un bassin synorogenique varisque : le culm des pyrenees centro-occidentales." Toulouse 3, 1987. http://www.theses.fr/1987TOU30096.

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Cette etude a pour but de reconstituer l'histoire du bassin carbonifere antevarisque (culm) des pyrenees du centre ouest. L'etude stratigraphique montre l'age de plus en plus jeune du culm et de la base du culm quand on se deplace vers l'ouest: les manifestations de l'orogenese varisque ne sont donc pas isochrones mais progressent vers l'ouest du namurien basal au westphalien a superieur. L'etude sedimentologique met en evidence des facies a caracteres gravitaires de type cone sous-marin profond. Les sequences sedimentaires observees traduisent une dynamique caracteristique d'un bassin syntectonique en voie de serrage. La phase paroxismale se situe dans l'intervalle westphalien b et c
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Books on the topic "Paleozoic orogenies"

1

1944-, Dallmeyer R. D., ed. Terranes in the circum-Atlantic Paleozoic orogens. Boulder, Colo: Geological Society of America, 1989.

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G, Gee D., Sturt B. A, International Geological Correlation Programme. Project 27 - Caledonide Oregon., and Uppsala Caledonide Symposium (1981), eds. The Caledonide orogen: Scandinavia and related areas. Chichester: Wiley, 1985.

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L, Harris A., ed. The nature and timing of orogenic activity in the Caledonian rocks of the British Isles. Oxford [Eng.]: Blackwell Scientific for the Geological Society, 1985.

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Terranes in the Circum-Atlantic Paleozoic Orogens. Geological Society of America, 1989. http://dx.doi.org/10.1130/spe230.

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Dallmeyer, R. D. Terranes in the Circum-Atlantic Paleozoic Orogens. Geological Society of Amer, 1990.

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The Caledonian-Appalachian orogen. Oxford [England]: Published for the Geological Society by Blackwell Scientific Publications, 1988.

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P, Matte, and International Geological Correlation Programme. Project 233. Conference, eds. Terranes in the Variscan belt of Europe and circum-Atlantic paleozoic orogens: Papers from International IGCP Conference Project 233 held inMontpellier, France, in August 1988. Amsterdam: Elsevier, 1990.

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Book chapters on the topic "Paleozoic orogenies"

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Schmidt, P. W., and B. J. J. Embleton. "A critique of paleomagnetic results from Australian Paleozoic fold belts and displaced terranes." In Terrane Accretion and Orogenic Belts, 21–30. Washington, D. C.: American Geophysical Union, 1987. http://dx.doi.org/10.1029/gd019p0021.

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Cross, Kenneth C., Christopher L. Fergusson, and Peter G. Flood. "Contrasting structural styles in the Paleozoic subduction complex of the southern New England Orogen, eastern Australia." In Terrane Accretion and Orogenic Belts, 83–92. Washington, D. C.: American Geophysical Union, 1987. http://dx.doi.org/10.1029/gd019p0083.

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Neubauer, F. "Late Proterozoic and Early Paleozoic Tectonothermal Evolution of the Eastern Alps." In The West African Orogens and Circum-Atlantic Correlatives, 307–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84153-8_13.

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Fergusson, Christopher L. "Early Paleozoic back-arc deformation in the Lachlan fold belt, southeastern Australia: Implications for terrane translations in eastern Gondwanaland." In Terrane Accretion and Orogenic Belts, 39–56. Washington, D. C.: American Geophysical Union, 1987. http://dx.doi.org/10.1029/gd019p0039.

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Pin, C. "Central-Western Europe: Major Stages of Development During Precambrian and Paleozoic Times." In The West African Orogens and Circum-Atlantic Correlatives, 295–306. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84153-8_12.

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Scotese, Christopher R. "Development of the Circum-Pacific Panthallassic Ocean during the early Paleozoic." In Circum‐Pacific Orogenic Belts and Evolution of the Pacific Ocean Basin, 49–57. Washington, D. C.: American Geophysical Union, 1987. http://dx.doi.org/10.1029/gd018p0049.

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Scheibner, Erwin. "Paleozoic tectonic development of eastern Australia in relation to the Pacific region." In Circum‐Pacific Orogenic Belts and Evolution of the Pacific Ocean Basin, 133–65. Washington, D. C.: American Geophysical Union, 1987. http://dx.doi.org/10.1029/gd018p0133.

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Robert, Paul. "The Rhenish Paleozoic Massifs, the Ardenne and the Rhenish Schistose Massif: Complex Orogens." In Organic Metamorphism and Geothermal History, 208–20. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3879-3_15.

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Shatov, V. V., A. Cole, R. Seltmann, and A. S. Yakubchuk. "Metallogeny of gold in the Tien Shan and Urals Paleozoic orogenic belts: a GIS-based approach." In Mineral Deposits at the Beginning of the 21st Century, 489–92. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003077503-124.

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Kottlowski, F. E. "Paleozoic rocks between El Paso and the New Mexico-Arizona border." In Tectonics of the Eastern Part of the Cordilleran Orogenic Belt, Chihuahua, New Mexico and Arizona: El Paso, Texas to Tucson, Arizona June 29–July 4, 1989, 71–74. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft121p0071.

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Conference papers on the topic "Paleozoic orogenies"

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Zalan, P. V. "Influence of Pre-Andean Orogenies on the Paleozoic Intracratonic Basins of South America." In 4th Simposio Bolivariano - Exploracion Petrolera en las Cuencas Subandinas. European Association of Geoscientists & Engineers, 1991. http://dx.doi.org/10.3997/2214-4609-pdb.115.008eng.

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Merschat, Arthur, and Ryan J. McAleer. "THREE PALEOZOIC APPALACHIAN OROGENIES IN THE SOUTHERN APPALACHIAN CRYSTALLINE CORE: BOXES WITH BROKEN EDGES?" In Joint 56th Annual North-Central/ 71st Annual Southeastern Section Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022nc-375515.

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Curry, Magdalena Ellis, Kurt Rudolph, and Duncan Erratt. "FORELAND BASIN RESPONSE AS A CONSTRAINT ON LAURENTIAN PALEOZOIC OROGENIES: INSIGHTS FROM SUBSIDENCE ANALYSIS AND FLEXURAL MODELING." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-358185.

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Wang, Hao, Wenjiao Xiao, and Chunming Wu. "PALEOZOIC SUBDUCTION OF THE NORTHWESTERN DUNHUANG OROGENIC BELT, SOUTHERNMOST CENTRAL ASIAN OROGENIC BELT: METAMORPHISM, GEOCHRONOLOGY AND TECTONIC IMPLICATION." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-317549.

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Song, Dongfang, Wenjiao Xiao, and Chunming Han. "PALEOZOIC TECTONIC EVOLUTION OF THE ALXA TECTONIC BELT (NW CHINA), SOUTHERN CENTRAL ASIAN OROGENIC BELT." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-336496.

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Zhou, Yuxin, Scott Paterson, Pablo H. Alasino, Wenrong Cao, and Barbara Ratschbacher. "AN ISOSTATIC MASS BALANCE MODEL OF CONTINENTAL ARCS AND ITS APPLICATION TO PALEOZOIC-MESOZOIC ARGENTINEAN CORDILLERAN OROGENIC SYSTEMS." In 112th Annual GSA Cordilleran Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016cd-274293.

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Stephan, Tobias, Uwe Kroner, and Rolf L. Romer. "MULTI-SAMPLE COMPARISON OF DETRITAL ZIRCON AGE SPECTRA OF LOWER PALEOZOIC UNITS FROM THE VARISCAN-APPALACHIAN OROGENIC BELT." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322288.

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Thigpen, Ryan, Dave Moecher, Harold Stowell, Nicholas E. Powell, Brandon Spencer, Elizabeth M. Bollen, Arthur Merschat, Robert Hatcher, Calvin A. Mako, and Andrew Kylander-Clark. "INTEGRATING PETROLOGY, GEOCHRONOLOGY, AND THERMOCHRONOLOGY TO UNRAVEL THE COMPLEX PALEOZOIC TECTONOMETAMORPHIC HISTORY OF THE SOUTHERN APPALACHIAN OROGENIC CORE." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-382105.

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Stephan, Tobias, Uwe Kroner, and Rolf L. Romer. "THE BIPARTITE EARLY PALEOZOIC GONDWANA SHELF: PALEOGEOGRAPHIC CONTROL ON THE SN-W MINERALIZATION ALONG THE VARISCAN-APPALACHIAN OROGENIC BELT." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-321982.

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Windley, Brian, and Wenjiao Xiao. "PALEOZOIC RIDGE SUBDUCTION AND SLAB WINDOWS IN THE CENTRAL ASIAN OROGENIC BELT: TECTONIC IMPLICATIONS FOR THE EVOLUTION OF AN ACCRETIONARY OROGEN." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-297132.

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Reports on the topic "Paleozoic orogenies"

1

Lane, L. S., and M. P. Cecile. Bedrock geology, Mount Hare, Yukon, NTS 116-I/9. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/290067.

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The Mount Hare map area extends across the western limb of the Richardson anticlinorium in the southern Richardson Mountains, northern Yukon. It is underlain by four Paleozoic sedimentary successions: middle Cambrian Slats Creek Formation, middle Cambrian to Early Devonian Road River Group, Devonian Canol Formation, and Late Devonian to Carboniferous Imperial and Tuttle formations. The Richardson trough depositional setting of the first three successions is succeeded by a deep-marine, turbiditic Ellesmerian orogenic foredeep setting for the Imperial-Tuttle succession. The carbonate-dominated Road River Group defines a west-dipping homocline which is transected by oblique transverse faults in its upper part. In the overlying Imperial-Tuttle succession, map-scale folds can be defined where shales are interbedded with thick persistent sandstone units. The structural geometry reflects Cretaceous-Cenozoic regional Cordilleran tectonism.
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Lane, L. S. Bedrock geology, Mount Raymond, Yukon, NTS 116-I/8. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329963.

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The Mount Raymond map area incorporates the western limb of the Richardson anticlinorium, southern Richardson Mountains, northern Yukon. It is underlain by four Paleozoic sedimentary successions: middle Cambrian Slats Creek Formation, Cambrian to Early Devonian Road River Group, Devonian Canol Formation, and Late Devonian to Carboniferous Imperial and Tuttle formations. The Richardson trough depositional setting of the first three successions is succeeded by a deep-marine, turbiditic, Ellesmerian, orogenic foredeep setting for the Imperial-Tuttle succession. Several major thrust faults and related folds transect the map area from north to south. The carbonate-dominated Road River Group defines a west-dipping homocline, modified by the Mount Raymond thrust fault together with minor folds in its footwall. In the overlying Imperial-Tuttle succession, map-scale folds are defined where shales are interbedded with persistent sandstones. Steep reverse faults in the east may have reactivated Cambrian rift faults. The structural geometry reflects Late Cretaceous-Cenozoic regional Cordilleran tectonism.
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