Academic literature on the topic 'Debris flow conglomerates'

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Journal articles on the topic "Debris flow conglomerates"

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Anketell, J. M., and S. M. Ghellali. "Stratigraphic Relationships of Basalt Lava Flows to the Pleistocene Sedimentary Sequence of the Mizdah Region, Tripolitania, S.P.L.A.J." Libyan Studies 21 (1990): 61–63. http://dx.doi.org/10.1017/s0263718900001473.

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AbstractCalcreted debris flow breccias which form the lowermost Pleistocene deposits in the Hammadah Al Hamrah region are locally overlain by well cemented conglomerates of the Old Wadi Terraces. These are commonly capped by a younger, mature calcrete which is also found patchily developed on the Tertiary and Mesozoic limestone bedrock. Basalt lava flows rest either on an eroded surface in the conglomerates or directly on the debris flows; however, their relationship to the younger calcrete is rarely seen. In the area north-east of Mizdah a pre-younger calcrete age for the basalts is proposed
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JIPA, Dan C., Cornel OLARIU, and Andrei BRICEAG. "Patrulius Olistolith – A large jurassic limestone block in Albian Conglomerates of the Bucegi Mountains, Southeast Carpathians, Romania." Geo-Eco-Marina No 24/2018 (December 31, 2018): 69–80. https://doi.org/10.5281/zenodo.2549578.

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The paper introduces and describes the Patrulius Olistolith, one of the largest exotic blocks (218 m long, 110 m wide and 55 m thick) embedded in Albian conglomerates from the Carpathian Bend area (southern part of Eastern Carpathians, Romania). The Albian conglomerates embedding the Patrulius Olistolith are deposits with homogeneous internal structure and poor sorting, features typical of debris flow sediments. Based on this character, it is considered that the Patrulius Olistolith transport was a gravitational collapse process and that it was transported as a very large c
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Bandopadhyay, P. C., and M. Ghosh. "Facies, Petrology and Depositional Environment of the Tertiary Sedimentary Rocks, Around Port Blair, South Andaman." Journal Geological Society of India 52, no. 1 (1998): 53–66. http://dx.doi.org/10.17491/jgsi/1998/520108.

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Abstract The Tertiary sedimentary rocks around Port Blair, South Andaman are classified into several facies and constraints on their formational environments are established. The Oceanic Pelagic Sediments ( OPS ) are made up of bedded chert and variegated shale facies. Radiolarian tests and microcrystalline quartz are major constituents of the chert. The variable mixture of silt-size quartz, feldspar, clay minerals, pyroclacstic fragments and outosized terrigenous clasts constitute the variegated shale. The OPS were formed in continental-margin orogenic basin through suspension settling and fi
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DE BORBA, ANDRÉ WEISSHEIMER, and ANA MARIA PIMENTEL MIZUSAKI. "Significado Tectônico dos Depósitos de Leques Aluviais da Formação Santa Bárbara (Eo-Paleozóico) na Região de Caçapava do Sul (RS, Brasil)." Pesquisas em Geociências 29, no. 1 (2002): 31. http://dx.doi.org/10.22456/1807-9806.19596.

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The alluvial fan deposits of Early Paleozoic Santa Bárbara Formation, located in Sul-rio-grandense Shield area of southernmost Brazil, have been analyzed here in terms of facies associations and tectonic significance. The investigated unit comprises conglomerates, sandstones, and siltstones, deposited probably under continental semi-arid climate conditions, in the post-collisional stages of Neoproterozoic Brasiliano/Pan-African Cycle. The location of the alluvial deposits suggests that the depositional locus of this sedimentary unit should probably consist of an individual and restricted fault
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Jipa, Dan C., and Cornel Olariu. "Significance of the Bucegi Conglomerate olistoliths in the Albian source-to-sink system from the Carpathian Bend basin in Romania." Interpretation 6, no. 1 (2018): T29—T37. http://dx.doi.org/10.1190/int-2017-0030.1.

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The presence of exotic blocks (or olistoliths) in sedimentary deposits is usually regarded as an indication of a deepwater slope environment. We evaluate olistoliths accumulated in shallow water at the upper edge of a slope setting using outcrop data. The study area is in the Bucegi Mountains in the southeast “bend” of the Carpathian Mountains in Romania. The studied deposits belong to the Bucegi Formation, a dominantly conglomerate succession of Albian age. The Lower Bucegi member has been accumulated as a large conglomerate submarine fan. The Upper Member forms a shelf-to-trench sedimentary
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Maslarević, Ljubinka, and Branislav Krstić. "Paleozoic continental slope deposits in the Stara Planina Mountains, Eastern Serbia." Geologica Balcanica 27, no. 1-2 (1997): 7–18. http://dx.doi.org/10.52321/geolbalc.27.1-2.7.

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Paleozoic (Devonian) marine sediments of the Inovo Formation in the Stara Planina Mountains consist of various metaclastic rock varieties: from conglomerates to siltstones and shales, composed of quartz, feldspar, rarely mica and abundant fragments of magmatic acid and basic rocks and intraclasts. On the basis of numerous typical sedimentary structures and textures, the clastics are interpreted as continental (lower or base of) slope deposits, resulting from a variety of mass gravity transports, viz.: debris flow, turbidity current, density-modified grainflow, and grain flow, intermittently co
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Alquiza, María J. P., Raúl M. Aviles, Pooja V. Kshirsagar, and Gabriela A. Zanor. "Evidence of a Large Debris Avalanche Event (22.0 Ma) from the Comondú Group on the Baja California Sur Peninsula, Mexico." Global Journal of Earth Science and Engineering 11 (August 27, 2024): 19–35. http://dx.doi.org/10.15377/2409-5710.2024.11.2.

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The morphological, sedimentological, and microtextural characteristics of Miocene debris avalanche deposits which extend from the Punta Coyote to the vicinity of the city of La Paz, were studied along the eastern of the Baja California Peninsula. The debris avalanche deposits studied include a mixture of angular mega blocks whose composition comes from the deposits that make up the Comondú Group: pre-Comondú (red sandstones and conglomerates with intercalated ignimbrites), the Upper Unit (brownish sandstones, shales, and conglomerate), and breccia, with a predominance of jigsaw cracks, injecti
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Cahyaningsih, Catur, Anjas Latif Ritonga, Shaury Aldila, and Zulhikmah Zulhikmah. "Lithofacies And Depositional Analysis Environment Of West Section Kolok Nan Tuo Village, Sawahlunto City, West Of Sumatera." Journal of Geoscience, Engineering, Environment, and Technology 3, no. 2 (2018): 128. http://dx.doi.org/10.24273/jgeet.2018.3.2.340.

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Research areas were located in the west of Kolok Nan Tuo Village. Geographically this area is located at coordinates 00 ° 36'57,85 '' - 00 ° 37'56,89 '' latitude and 100 ° 42'10,08 '' 100 ° 43'47,28 " BT. The methods used in research is geological mapping. Based on the results of stratigraphic research area is divided into three units consist of: Crystalline Limestone Unit (SBGK) consisting Crystalline Limestone of and mudstone lithofacies, Conglomerate Units (SK) consists of polymic conglomerate and sandstones greywacke lithofacies while claystone Unit (SBL) lithofacies consists of claystone
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Korus, Jesse T., R. Matthew Joeckel, and Shane T. Tucker. "Genesis of giant, bouldery bars in a Miocene gravel-bed river: Insights from outcrop sedimentology, UAS-SfM photogrammetry, and GPR." Journal of Sedimentary Research 90, no. 1 (2020): 27–47. http://dx.doi.org/10.2110/jsr.2020.3.

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ABSTRACT Bedsets of bouldery intraformational conglomerate partly fill a narrow, 40-m-deep paleovalley in the Arikaree Group (lower Miocene) in Nebraska, USA. Entire bar successions are exposed in 3D, offering an opportunity to improve upon sedimentological models for coarse-grained fluvial deposits. Using unmanned aircraft, structure-from-motion photogrammetry, and ground-penetrating radar, we offer the first comprehensive assessment of the lithofacies and stratigraphic architecture of this regionally unique fluvial conglomerate. We interpret three lithofacies associations: (1) beds of chaoti
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Westrop, Stephen R., and Jennifer D. Eoff. "A Jiangshanian (Cambrian; Furongian) trilobite fauna from the Cow Head Group, western Newfoundland." Canadian Journal of Earth Sciences 60, no. 8 (2023): 1244–64. http://dx.doi.org/10.1139/cjes-2023-0036.

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Three shelf-derived boulders in debris flow conglomerates of the Downes Point Member of the Shallow Bay Formation of western Newfoundland yielded the first record of an Upper Cambrian shelf-margin trilobite fauna from the Elvinia Zone (Steptoean; Jiangshanian) in eastern North America. The fauna is dominated by the “catillicephalid” Buttsia Wilson, 1951, and resembles trilobite biofacies from microbial buildups in the Gatesburg Formation of Pennsylvania. It is correlative with the Cliffia latagenae Subzone, which is the youngest Steptoean biostratigraphic unit in the Gatesburg. New taxa are Tr
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Book chapters on the topic "Debris flow conglomerates"

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Busby, C. J., A. H. Graettinger, M. López-Martínez, et al. "Early Miocene to Pliocene magmatic and structural evolution of the Gulf of California margin in central Baja California (Mexico): The Mulegé–La Trinidad region, Baja California Sur." In The Virtue of Fieldwork in Volcanology, Sedimentology, Structural Geology, and Tectonics—Celebrating the Career of Cathy Busby. Geological Society of America, 2025. https://doi.org/10.1130/2025.2563(12).

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ABSTRACT The volcanic stratigraphy of the central Gulf of California margin of the Baja California peninsula preserves a valuable record of the transition from subduction of the Farallon plate (24–12 Ma) to oblique rifting (<12 Ma). Although strike-slip faults (as well as normal faults) are common in oblique rifts and are abundant on the new (younger than 6 Ma) seafloor in the Gulf of California, none has been previously reported in the onshore central Baja California margin. This study focused on a previously unmapped region in the central Baja California margin near Mulegé, where we i
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Reports on the topic "Debris flow conglomerates"

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Houck, Karen, Jay Temple, Kassandra Lindsey, Lauren Broes, and Daniel Miggins. OF-20-02 Geologic Map of the Agate Mountain Quadrangle, Park County, Colorado. Colorado Geological Survey, 2024. https://doi.org/10.58783/cgs.of2002.gfnp2602.

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The Agate Mountain quadrangle contains Proterozoic igneous and metamorphic rocks, Paleozoic sedimentary rocks, and Cenozoic volcanic and volcaniclastic rocks. Proterozoic rocks include granite, granitic gneiss, gabbro porphyry, pegmatite, mylonite, and microbreccia. Paleozoic sedimentary rocks include the Manitou Formation, Harding Sandstone, Fremont Formation, Dyer Dolomite, Leadville Limestone, Belden Formation, Minturn Formation, and Maroon Formation. Cenozoic volcanic and volcaniclastic rocks include Wall Mountain Tuff, Thirtynine Mile Andesite, volcanic breccias, trachybasalt, Tallahassee
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