Academic literature on the topic 'Late Archaean'

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Journal articles on the topic "Late Archaean"

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Kendall, Brian, Christopher T. Reinhard, Timothy W. Lyons, Alan J. Kaufman, Simon W. Poulton, and Ariel D. Anbar. "Pervasive oxygenation along late Archaean ocean margins." Nature Geoscience 3, no. 9 (August 22, 2010): 647–52. http://dx.doi.org/10.1038/ngeo942.

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Lobach-Zhuchenko, S. B., H. Rollinson, V. P. Chekulaev, V. M. Savatenkov, A. V. Kovalenko, H. Martin, N. S. Guseva, and N. A. Arestova. "Petrology of a Late Archaean, Highly Potassic, Sanukitoid Pluton from the Baltic Shield: Insights into Late Archaean Mantle Metasomatism." Journal of Petrology 49, no. 3 (January 31, 2008): 393–420. http://dx.doi.org/10.1093/petrology/egm084.

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Wang, Yinzhao, Ruize Xie, Jialin Hou, Zhenbo Lv, Liuyang Li, Yaoxun Hu, Hungchia Huang, and Fengping Wang. "The late Archaean to early Proterozoic origin and evolution of anaerobic methane‐oxidizing archaea." mLife 1, no. 1 (March 2022): 96–100. http://dx.doi.org/10.1002/mlf2.12013.

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Eriksson, P. G., K. C. Condie, W. van der Westhuizen, R. van der Merwe, H. de Bruiyn, D. R. Nelson, W. Altermann, et al. "Late Archaean superplume events: a Kaapvaal–Pilbara perspective." Journal of Geodynamics 34, no. 2 (September 2002): 207–47. http://dx.doi.org/10.1016/s0264-3707(02)00022-4.

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Yang, J., C. K. Junium, N. V. Grassineau, E. G. Nisbet, G. Izon, C. Mettam, A. Martin, and A. L. Zerkle. "Ammonium availability in the Late Archaean nitrogen cycle." Nature Geoscience 12, no. 7 (May 20, 2019): 553–57. http://dx.doi.org/10.1038/s41561-019-0371-1.

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Schiøtte, L., A. P. Nutman, and D. Bridgwater. "U–Pb ages of single zircons within "Upernavik" metasedimentary rocks and regional implications for the tectonic evolution of the Archaean Nain Province, Labrador." Canadian Journal of Earth Sciences 29, no. 2 (February 1, 1992): 260–76. http://dx.doi.org/10.1139/e92-024.

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Detrital zircons and their postdepositional overgrowths from three units of the "Upernavik" supracrustal association in the northern (Saglek) block of the Archaean Nain Province have been dated with the ion microprobe SHRIMP. In one unit, from the granulite-facies area in inner Saglek Fiord, the zircon population is dominated by early Archaean grains thought to be derived from the Uivak gneisses. Recrystallization and growth of new zircon within this metasediment took place during granulite-facies metamorphism at 2761 ± 12 Ma (2σ), which is also a younger limit on the age of deposition.In a second unit, from the amphibolite-facies area in outer Saglek Fiord, detrital zircons have predominantly mid- and late Archaean ages. The mid-Archaean zircons are comparable in age to the 3235 Ma Lister gneisses. The ages of the late Archaean detrital zircons (2800–2960 Ma) do not correspond to any known rock complex in the Saglek block, but plutonic rocks associated or correlative with the ca. 2840 Ma Kanairiktok Plutonic Suite of the southern (Hopedale) block are a possible source for many of the grains. Overgrowths were dated at 2690–2730 Ma in this sample.A third metasedimentary unit from the Okak Bay area, 100 km south of Saglek Fiord, also contains detrital zircons with ages comparable to that of the Lister gneisses (3235 Ma). The age of recrystallization and zircon overgrowths was dated at ca. 2560 Ma in this sample. A single grain dated at ca. 2780 Ma is considered most likely to be detrital, which would imply an age of deposition between ca. 2780 and 2560 Ma for this unit.The results show that although late Archaean depositional ages are possible for all three units, the "Upernavik" supracrustal association is composite and sediments in different units have widely different sources and metamorphic histories. These conclusions support a new model for the Nain Province according to which separate terranes were tectonically juxtaposed in the late Archaean. In this model, the age of plutonic and supracrustal rocks and their metamorphic histories prior to juxtaposition differ from one terrane to another.
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Nutman, Allen P. "Tectonostratigraphic terranes within Archaean gneiss complexes: examples from Western Australia and southern West Greenland." Bulletin of the Geological Society of Denmark 39 (December 20, 1991): 199–211. http://dx.doi.org/10.37570/bgsd-1991-39-09.

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New field work and isotopic data show that the Godthabsfjord region of West Greenland consists of a collage of tectonostratigraphic terranes, which evolved separately prior to tectonic juxtaposition in the late Archaean. In Western Australia the Narryer Gneiss Complex, which lies on the northwestern margin of the Yilgarn Craton, is, unlike the Godthabsfjord region, very poorly exposed (less than 1 % ). In consequence it is impossible to follow geological boundaries in this complex, and instead the complex has been studied by a very extensive use of within-grain zircon U-Pb geochronology on the ion microprobe SHRIMP. The zircon geochronology suggests that the Narryer Gneiss Complex also consists of several discrete terranes of early to mid Archaean gneisses. In both the Godthabsfjord region and the Narryer Gneiss Complex, late Archaean juxtaposition of terranes was accompanied by intrusion of crustally­derived granites, deformation, and amphibolite facies metamorphism. Thus some Archaean high grade gneiss complexes consist of terranes that underwent independent evolution until they were brought together at a later time. In this respect their anatomy resembles post-Archaean orogenic belts that formed as a consequence of plate tectonic processes.
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Bridgwater, D., and L. Schiøtte. "The Archaean gneiss complex of northern Labrador A review of current results, ideas and problems." Bulletin of the Geological Society of Denmark 39 (December 20, 1991): 153–66. http://dx.doi.org/10.37570/bgsd-1991-39-06.

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1. The early Archaean rocks in northern Labrador can be subdivided into the ea. 3.78 Ga Nulliak supracrus­tal association, the migmatitic Uivak I gneisses, the dominant phase of which was emplaced at ea. 3.73 Ga, and the Uivak II augen gneiss. Inherited low-U rounded inclusions within igneous zircons in the Uivak I gneisses have ages between 3.73 and 3.86 Ga and are more likely to have been derived from a pre-existing high-grade metamorphic gneiss complex than from the Nulliak association. In the early Archaean there were probably several rapid cycles of sedimentary deposition and volcanism followed by emplacement of major plutons. Mid Archaean gneisses are more abundant in northern Labrador than previously realised. The late Archaean metamorphic history of these gneisses is different from the history of the early Archaean gneisses. Whereas an important part of the mid Archaean suite was emplaced in granulite facies and retrogressed at the time of granitoid veining at ea. 2.99 Ga, the major part of the early Archaean rocks were reworked under granulite facies conditions in a sequence of closely spaced events between 2. 7 and 2.8 Ga. The two groups of gneisses had different metamorphic histories until ea. 2.7 Ga, but late and post-tectonic granites of 2.5- 2. 7 Ga age cut across both. It is suggested that the terrane model in southern West Greenland can be extended to Labrador and that tectonic intercalation of early and mid Archaean gneisses took place around 2.7 Ga. Correlation between the Maggo gneisses around Hopedale, mid Archaean gneisses in northernmost Labrador and gneisses from the Akia terrane in West Greenland is suggested. Like the Malene supracrustals in West Greenland the Upernavik supracrustals in Labrador are composite associations, the youngest of which are thought to have been deposited around 2. 7 Ga.
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Baadsgaard, H., A. P. Nutman, M. Rosing, and D. Bridgwater. "A late Archaean pegmatite dyke swarm from the Isukasia area, southern West Greenland." Rapport Grønlands Geologiske Undersøgelse 125 (December 31, 1985): 48–51. http://dx.doi.org/10.34194/rapggu.v125.7889.

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The Isukasia area is dominated by early Archaean rocks that have been discussed extensively in the geological literature (Nutman et al., 1983). These rocks were deformed and recrystallised under amphibolite facies conditions during the late Archaean regional duetile deformation (Bridgwater et al., 1976; Nutman et al., 1983). The pegmatite dykes discussed here post-date this event but were succeeded by Proterozoic basic dykes, rare granitic sheets (Kalsbeek et al., 1980; Kalsbeek & Taylor, 1983), and then by Proterozoic faulting.
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Kalsbeek, Feiko, and Hubert P. Zeck. "Dykes and deformation in the Ikertoq zone of the Nagssugtoqidian at S0ndre Str0mfjord Airport, West Greenland - a discussion." Bulletin of the Geological Society of Denmark 34 (December 20, 1985): 213–17. http://dx.doi.org/10.37570/bgsd-1985-34-17.

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Rb-Sr isotope evidence indicates that deformation in the border zone between the Archaean craton and the Nagssugtoqidian mobile belt in West Greenland took place both during the late Archaean (at ea. 2600 Ma) and during the Proterozoic Nagssugtoqidian orogeny (1850-1600 Ma). The structure (fabric) of the rocks is the combined effect of these two episodes of deformation.
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Dissertations / Theses on the topic "Late Archaean"

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Robertson, S. "Late Archaean crustal evolution in the Ivisartoq region, southern west Greenland." Thesis, University of Exeter, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353048.

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Opiyo-Akech, Norbert. "Geology and geochemistry of the late Archaean greenstone associations, Maseno area, Kenya." Thesis, University of Leicester, 1988. http://hdl.handle.net/2381/35080.

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The greenstone belt of Kenya is an extension of what is commonly referred to as the Tanganyika "Shield". The two supracrustal sequences recognized in Kenya are the Nyanzian and the Kavirondian. The rocks found in these sequences are diverse, with dominant volcanics in the Nyanzian, whereas the Kavirondian is predominantly sedimentary. The Nyanzian lavas represent a diverse range from basalts and basaltic andesites, through andesites and dacites to rhyolites. From geochemical studies the basalts and basaltic andesites are tholeiitic, whereas the andesites, dacites and rhyolites are calc-alkaline. The sedimentary sequence ranges from mudstone, through shales, sandstones and grits to conglomerates. The plutonic rocks range in composition from gabbro to true granites, but tonalite is the dominant rock type. The chemical differences between the tholeiitic basalts and the calc-alkaline andesitic to rhyolitic sequences suggests that these volcanic suites are derived from different sources and/or through different processes. The granitoids have close chemical similarities with the silicic volcanics. From the geochemical and field relationships, the Nyanzian and Kavirondian sequences are considered to have developed on a continental segment which had not yet attained full stability. The model employed for the generation of these volcanics considers the basalts to have been generated in a region undergoing extension, similar to that of a modern back-arc environment, whereas the calc-alkaline sequences, including the granitoids, are broadly comparable with those found in present day continental arc environments.
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Hapugoda, Hapugoda Udage Sarath. "Late Archaean and Early Proterozoic crustal evolution of the Georgetown Block, Northeast Queensland, Australia /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16503.pdf.

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Brewer, M. A. "The petrology of the Late Archaean gneisses and granites, Nunatarssuaq, Ivisartoq region, southern West Greenland." Thesis, University of Exeter, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370924.

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Hofmann, Axel. "Sedimentology and tectonic history of late Archaean sedimentary successions in Zimbabwe a study in greenstone belt geology /." [S.l.] : [s.n.], 2001. http://ArchiMeD.uni-mainz.de/pub/2002/0026/diss.pdf.

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Woodhouse, Ailsa Jane. "Provenance of late archaean metasedimentary rocks on the southern Gawler craton : implications for its early crustal development /." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09SB/09sbw889.pdf.

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Swain, Greg Martin. "Provenance and tectonics of the late Archaean mulgathing complex, central Gawler Craton : geochronological, geochemical and isotopic evidence for plume-arc interaction /." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09SB/09sbs9715.pdf.

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Halimat, Olubukola Ibrahim. "Actinobacterial and archaeal diversity in lake Magadi, Kenya." University of the Western Cape, 2013. http://hdl.handle.net/11394/4253.

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>Magister Scientiae - MSc
Microorganisms of the class Actinobacteria and domain Archaea are interesting from a biotechnological perspective owing to their metabolic attributes as producers of secondary metabolites and resilience under harsh environmental conditions respectively. Lake Magadi is a soda lake well studied in terms of its geology and limnology. Research attention has also been drawn to the microbial populations which thrive in this unique habitat but currently there are no reports on the assessment of its microflora using molecular methods. This study aimed to assess the actinobacterial and archaeal communities within Lake Magadi, Kenya a hypersaline –highly alkaline habitat using metagenomic methods as a preliminary study to identify potential candidates for exploitative biology Samples from two sites dubbed Lake Magadi station 2 (LM2) and Lake Magadi salt pan 4 (LMS4) within the Lake Magadi were analyzed using the 16S rRNA gene as a phylogenetic marker. Cluster analysis of taxon-specific 16S rDNA PCR-DGGE profiles revealed moderately heterogeneous actinobacterial and archaeal populations across the sample sites under investigation which is probably a reflection of the differences in abiotic conditions at the study sites. This observation was also confirmed from the multi-dimensional scaling (MDS) plot. PCR-based clonal libraries of actinobacterial and archaeal communities of both study sites retrieved a total of thirty-two clones (twenty actinobacterial and twelve archaeal) were sequenced. Analysis of the sequences revealed cultured and uncultured signatures of microorganisms typical of hypersaline and or highly alkaline niches. A few (3) sequences presented novelty (<96%) in identities with any previously identified organism. It was concluded that the species dominance at site LMS4 [situated within the salt flats of Lake Magadi and site for exploration of trona and its mineralized extensions (nacholite and gayllusite)] is likely to be dictated by anthropogenic stress since most of the microbial signals associated with the study site are typical of saline and or alkaline environmental samples exposed to especially mining but also agricultural and waste management practices. Isolation studies also revealed previously identified strains peculiar to hypersaline brines and sediments. The strains retrieved were affiliated to the taxonomically diverse genus Bacillus and Halomonas sp. The true applications and potential opportunities these isolates have for biotechnology have been well documented. Observations made from the culture dependent and culture independent methods suggests strongly that study site LMS4 is subjected to environmental conditions more severe than at site LM2. This study is a guide for future studies as it provides primary information on the haloalkaliphilic representatives of the actinobacteria phylum and domain Archaea within the soda lake environment. It can serve as a pedestal for investigation into the molecular machinery that supports the haloalkaliphilic lifestyles of inhabiting microorganisms and consequently give leads as to how they can be commercially exploited.
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Carter, Alan Henry Charles. "Fluid-rock interaction and gold deposition within a late Archaen shear zone, Dalny Mine, Zimbabwe." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277295.

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Schlais, Michael J. "Detection and Characterization of a Unique Ammonia Oxidizing Archaea; Cultured from Lake Superior." Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1416483554.

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Books on the topic "Late Archaean"

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Pino, Mario, and Giselle A. Astorga, eds. Pilauco: A Late Pleistocene Archaeo-paleontological Site. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-23918-3.

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Bitsianēs, Antōnēs. Hē Hellēnikē glōssa mesa apo archaia, Vyzantina, kai logia keimena: A ǵymnasiou. Athēna: Metaichmio, 1993.

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Kōnstantinou, Ēlias I. Lexiko homoēchōn lexeōn tēs Hellēnikēs glōssas: Archaias, neoteras, dēmotikēs. Athēna: Epikairotēta, 1990.

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Moulakakēs, Nikos. Lexiko tēs Archaias Hellēnikēs glōssas: Parartēma, lexiko tōn rēmatōn tēs Attikēs dialektou. Athēna: Ekdoseis Epikairotēta, 1990.

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Giannothanasēs, Athanasios. Lexiko archaias, Vyzantinēs & logias Hellēnikēs glōssas: Me pinakes rēmatōn kai lexeis-phraseis tou tōrinou glōssikou mas kōdika : orthographia, etymologia, grammatikē anagnōrisē, sēmasia sta Neoellēnika, parathetika, chronoi rēmatōn. Athēna: Gutenberg, 1997.

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The prehistoric multicultural settlement of Hajná Nová Ves (Slovakia): Cultural-historical, settlement-archaeological and archaeo-environmental contexts in western Carpathia at the end of the early prehistoric and in the late prehistoric periods. Oxford: Archaeopress, 2013.

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Pino, Mario, and Giselle A. Astorga. Pilauco : A Late Pleistocene Archaeo-paleontological Site: Osorno, Northwestern Patagonia and Chile. Springer, 2019.

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Pino, Mario, and Giselle A. Astorga. Pilauco : a Late Pleistocene Archaeo-Paleontological Site: Osorno, Northwestern Patagonia and Chile. Springer International Publishing AG, 2020.

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Book chapters on the topic "Late Archaean"

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Brown, Michael, C. R. L. Friend, V. R. McGregor, and W. T. Perkins. "The Late Archaean QÒrqut Granite Complex of Southern West Greenland." In 1989, Granites and Rhyolites, 10617–32. Washington, DC: American Geophysical Union, 2013. http://dx.doi.org/10.1002/9781118782057.ch29.

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Glikson, Andrew Y., and Franco Pirajno. "The World’s Largest Late to Post-Archaean Asteroid Impact Structures." In Asteroids Impacts, Crustal Evolution and Related Mineral Systems with Special Reference to Australia, 61–78. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74545-9_3.

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Glikson, Andrew Y. "The Moon and the Late Heavy Bombardment (LHB)." In The Archaean: Geological and Geochemical Windows into the Early Earth, 1–7. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07908-0_1.

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Schiøtte, L., and D. Bridgwater. "Multi Stage Late Archaean Granulite Facies Metamorphism in Northern Labrador, Canada." In Granulites and Crustal Evolution, 157–69. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2055-2_9.

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Oliveira, Elson P. "The Late Archaean Uauá Mafic Dyke Swarm, São Francisco Craton, Brazil, and Implications for Palaeoproteozoic Extrusion Tectonics and Orogen Reconstruction." In Dyke Swarms:Keys for Geodynamic Interpretation, 19–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-12496-9_2.

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Bridgwater, D. "Changes in the Isotopic Composition of Whole-Rock Pb During Different Stages of Retrogression of Late Archaean Granulite Facies Gneisses from Kangimut Sammisoq, Southern West Greenland." In Fluid Movements — Element Transport and the Composition of the Deep Crust, 331–44. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0991-5_27.

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Pino, Mario. "Pilauco and Los Notros Sites Research: A Narration of Human and Scientific Events." In Pilauco: A Late Pleistocene Archaeo-paleontological Site, 1–11. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23918-3_1.

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Jarpa-Mateluna, Leonora. "Diatoms: Microalgae from Pilauco." In Pilauco: A Late Pleistocene Archaeo-paleontological Site, 175–82. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23918-3_10.

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Álvarez-Barra, Valentina. "Phytolith Analysis from Coprolites of Pilauco." In Pilauco: A Late Pleistocene Archaeo-paleontological Site, 183–93. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23918-3_11.

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Tello, Francisco, and Fernanda Torres. "Fossil Coleoptera from the Pilauco Site: An Approach to Late Pleistocene Microenvironments." In Pilauco: A Late Pleistocene Archaeo-paleontological Site, 195–212. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23918-3_12.

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Conference papers on the topic "Late Archaean"

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Alexander, J. H., L. C. Kah, and W. Altermann. "CENTIMETER-SCALE ALTERNATION WITHIN A LATE ARCHAEAN CARBONATE PLATFORM: USING STRATIGRAPHIC ANALYSES TO INTERPRET PALEOENVIRONMENTAL VARIATION." In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-345228.

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Bauri, Sudip, Upama Dutta, Uttam K. Bhui, and Pulak Sengupta. "EXSOLUTION TEXTURES IN PYROXENES FROM METAMORPHOSED BANDED IRON FORMATION FROM PARTS OF THE SOUTHERN GRANULITE TERRANE, INDIA: EVIDENCE OF UHT METAMORPHISM DURING LATE ARCHAEAN TIME." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-284681.

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Callaghan, Jake. "NOVEL ARCHAEAL LINEAGES UTILIZING RUBISCO IN LAKE SUPERIOR SEDIMENTS." In 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-348067.

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Konnova, S. A., I. M. Ibrahim, Y. P. Fedonenko, and E. N. Sigida. "Characteristics of the polysaccharide-producing culture Haloterrigena saccharevitans EG3QL57 isolated from the saltworks at lake Karun (Egypt)." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.127.

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According to the physiological-morphological and molecular-biological characteristics, the halophilic representative of archaea strain-isolate from the saltworks of lake Karun (Egypt) was identified as Haloterrigena saccharevitans EG3QL57. The ability of H. saccharevitans EG3QL57 to utilize oil with an efficiency of 27.4%, resistance to the presence of concentrations of up to 5 mm of heavy metals in the growth medium is shown. It is shown that when the growth conditions of microorganisms are optimized, they produce up to 2.3 g/l of exopolysaccharides (EPS).
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