Relevant bibliographies by topics / Precambrian-Cambrian boundary

Academic literature on the topic 'Precambrian-Cambrian boundary'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Precambrian-Cambrian boundary"

1

Fåhræus, Lars E. ✝. "The Precambrian-Cambrian Boundary - victim of parochialism." Newsletters on Stratigraphy 31, no. 1 (September 15, 1994): 1–19. http://dx.doi.org/10.1127/nos/31/1994/1.

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2

Fairchild, Ian. "The Precambrian-Cambrian boundary." Trends in Ecology & Evolution 4, no. 8 (August 1989): 251–52. http://dx.doi.org/10.1016/0169-5347(89)90175-4.

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3

Narbonne, Guy M., Paul M. Myrow, Ed Landing, and Michael M. Anderson. "A candidate stratotype for the Precambrian–Cambrian boundary, Fortune Head, Burin Peninsula, southeastern Newfoundland." Canadian Journal of Earth Sciences 24, no. 7 (July 1, 1987): 1277–93. http://dx.doi.org/10.1139/e87-124.

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The Burin Peninsula exhibits an exceptionally thick and essentially continuous succession of marine strata through the Precambrian–Cambrian transition. Fossils are abundant and include trace fossils, small shelly fossils, vendotaenid algae, soft-bodied megafossils, and microfossils. The Burin Peninsula is readily accessible and has long been considered a potential area for a Precambrian–Cambrian boundary stratotype.A continuous section through the upper part of member 1 and all of member 2 of the Chapel Island Formation is exposed at Fortune Head, and this section is herein proposed as a global stratotype for the Precambrian–Cambrian boundary. The boundary horizon is located 2.4 m above the base of member 2 of the Chapel Island Formation. This horizon marks the base of the basal Cambrian Phycodes pedum (ichnofossil) Zone and immediately overlies the top of the Late Precambrian Harlaniella podolica (ichnofossil) Zone. Shelly fossils (sabelliditids) first appear a few metres below the proposed boundary. Soft-bodied megafossils, carbonaceous impressions of vendotaenid algae, and organic-walled microfossils occur both below and above this boundary and enhance global correlation with this section.Fossils of the Rusophycus avalonensis (ichnofossil) Zone first appear midway through member 2 (approximately 135 m above the proposed boundary) and occur commonly throughout the upper part of the Chapel Island Formation and the overlying Random Formation. Calcareous small shelly fossils (?Circotheca sp.) appear near the top of member 2 (approximately 400 m above the proposed boundary), and a more diverse Aldanella attleborensis small shelly fossil assemblage characterizes the uppermost strata of member 3 and all of member 4 of the Chapel Island Formation (approximately 550–650 m above the proposed boundary). The lowest trilobites, representatives of the Callavia broeggeri Zone, first appear more than 1000 m above the proposed Precambrian–Cambrian boundary.
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4

Gamper, A., U. Struck, F. Ohnemueller, C. Heubeck, and S. Hohl. "Chemo- and biostratigraphy of the Gaojiashan section (northern Yangtze platform, South China): a new Pc-C boundary section." Fossil Record 18, no. 2 (June 10, 2015): 105–17. http://dx.doi.org/10.5194/fr-18-105-2015.

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Abstract. The widespread, terminal Ediacaran Dengying Formation (~ 551–~ 542 Ma) of South China hosts one of the most prominent negative carbonate carbon isotope excursions in Earth's history and thus bears on the correlation of the Precambrian–Cambrian boundary worldwide. The dominantly carbonate strata of the Dengying Formation are largely studied for their unique preservation of its terminal Ediacaran fauna but their geochemical context is poorly known. This study presents the first high-resolution stable isotope record (δ13C, δ18O) of calcareous siliciclastic shallow-water deposits of the Gaojiashan section (Shaanxi Province). The section includes (in ascending order) the Algal Dolomite Member, the Gaojiashan Member and the Beiwan Member of the Dengying Formation. Our data record a major δ13Ccarb negative excursion to −6 ‰ in the uppermost Gaojiashan Member which is comparable in shape and magnitude to the global Precambrian–Cambrian boundary negative δ13C excursion. Our data set is consistent with a "shallow-water anoxia" scenario which is thought to contribute to the "Cambrian explosion". The stratigraphic occurrence of Cloudina and a large negative δ13C excursion suggest that the Precambrian–Cambrian boundary is located near the top of the Gaojiashan Member and, consequently, that overlying carbonates and dolomites of the Beiwan Member are of earliest Cambrian age. Thus the Gaojiashan section may represent a new shallow-water section spanning the Precambrian–Cambrian boundary. Although bio- and chemostratigraphic data support this novel interpretation, we cannot exclude the possibility that the key excursions may represent a local perturbation indicating a restricted-basin environment.
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Jie-Dong, Yang, Sun Wei-Guo, Wang Zong-Zhe, and Wang Yin-Xi. "Sm—Nd isotopic age of Precambrian—Cambrian boundary in China." Geological Magazine 133, no. 1 (January 1996): 53–61. http://dx.doi.org/10.1017/s001675680000724x.

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AbstractBy the new method of Sm—Nd isotopic dating on phosphatic small skeletal fossils and collo-phanite minerals, the Zhongyicun Member of the earliest Cambrian Meishucun Stage at Meishucun in Yunnan, southern China, has been dated at 562.8 ± 7.9 Ma and 562.1 ± 5.7 Ma. Another Sm—Nd age, 570.3 ± 17.1 Ma, has been obtained with samples from the Zhongyicun Member in Yunnan and its stratigraphic equivalents in Sichuan and Xinjiang. These data tend to suggest that the best age estimate of the Precambrian—Cambrian boundary is very likely within the range of 560–570 Ma. As biophosphates and sedimentary phosphates are widely distributed in sequences of the Precambrian—Cambrian transition, the Sm-Nd isotopic method is recommended as an effective approach for precise dating of the initial Cambrian boundary.
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6

Maithy, P. K., and Rupendra Babu. "Upper Vindhyan biota and Precambrian/Cambrian Boundary." Journal of Palaeosciences 46, no. (1-2) (December 31, 1997): 1–6. http://dx.doi.org/10.54991/jop.1997.1311.

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The upper age limit of the Vindhyan Supergroup is yet a point of debate. The evidences from structural biological remains, megafossils and organic-walled microfossils, from the Bhander Group support the view that the upper age limit of the Vindhyan Supergroup does not extend beyond Vendian. This fact also gets support by the absence of Ediacaran fauna and vendotaenids in Bhander. All the evidences now point to the fact that the deposition of the Vindhyan sediments ceased before the Precambrian/Cambrian Transition interval.
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VALENTINE, J. W. "A Biotic Transition: The Precambrian-Cambrian Boundary." Science 245, no. 4922 (September 8, 1989): 1126. http://dx.doi.org/10.1126/science.245.4922.1126.

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8

Kimura, Hiroto, and Yoshio Watanabe. "Oceanic anoxia at the Precambrian-Cambrian boundary." Geology 29, no. 11 (2001): 995. http://dx.doi.org/10.1130/0091-7613(2001)029<0995:oaatpc>2.0.co;2.

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9

AWRAMIK, STANLEY M. "The Precambrian-Cambrian boundary and geochemical perturbations." Nature 319, no. 6055 (February 1986): 696. http://dx.doi.org/10.1038/319696a0.

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10

MORRIS, SIMON CONWAY, and STEFAN BENGTSON. "The Precambrian-Cambrian boundary and geochemical perturbations." Nature 319, no. 6055 (February 1986): 696–97. http://dx.doi.org/10.1038/319696b0.

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Dissertations / Theses on the topic "Precambrian-Cambrian boundary"

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Harrison, Bianca. "Palaeoenvironments and position of the Precambrian–Cambrian boundary within the lower Vanrhynsdorp Group of South Africa: sedimentary facies analysis, U-Pb series zircon geochronology and micropalaeontology." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29450.

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The Vanrhynsdorp Group is a mainly fluvio-marine siliclastic succession that outcrops in the northwestern part of South Africa. The critical Precambrian-Cambrian boundary falls within the group, however the depositional environments across the boundary, its exact stratigraphic position and nature are unresolved. The group was deposited in the Vanrhynsdorp Basin, which has been shown to be the southernmost extension of the Nama Foreland Basin. Consequently, the Vanrhynsdorp Group has been correlated with the world-famous Nama Group, which features diverse Ediacaran-Cambrian fossils. To date, no body fossils have been discovered in the Vanrhynsdorp Group. Through U-Pb dating of detrital zircons using LA-ICP-MS, radiometric ages for the middle part of the Vanrhynsdorp Group (Besonderheid Formation) were obtained in a preliminary study of this project. The radiometric data, yielding a maximum depositional age of 524 to 528 Ma from the youngest zircon grain population, indicated that the Precambrian-Cambrian boundary is stratigraphically lower in the group than it was thought before. To further constrain the age of the lower Vanrhynsdorp Group, and by extension the position of the Precambrian-Cambrian boundary, several detrital zircon samples were processed for age determination from the succession in this study. In addition, using sedimentary facies analysis, the lateral and vertical facies variation in this lower part of the group were (re)documented in order to refine the palaeoenvironmental setting. The current results suggest a dominantly shallow marine, partly storm-dominated depositional environment for the lowermost units as opposed to the previous interpretations of dominantly alluvial settings. Because of the global importance of the Ediacaran-Cambrian transition for diversification of marine biota in the Cambrian, addressing these palaeoenvironmental inconsistencies is the vital outcome of this study. By integrating our sedimentological and geochronological results, the project presents an improved understanding of the depositional history of the Vanrhynsdorp Group during the critical Ediacaran-Cambrian transition.
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2

Nedin, C. "The nature of the Precambrian-Cambrian transition in the northern Flinders Ranges, South Australia." Thesis, 1990. http://hdl.handle.net/2440/119917.

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Previous investigations into the Ediacara Member of the late Proterozoic Rawnsley Quartzite in the Flinders Ranges have produced differing interpretations of the depositional environment. Studies at Nilpena Hills indicate that deposition was influenced by back barrier lagoonal conditions with the intermittent influx of fluidised sands which mantled lagoonal muds. Re-interpretation of the Ediacara assemblage shows a hitherto unrecognised benthonic bias. This abundance of sessile, benthonic forms supports a sub-tidal depositional environment. However, the increase in the numbers of motile forms compared with sessile forms, preserved towards the top of the member, accords well with one of two inferred shallowing upward cycles within the sequence. A recent re-evaluation of the nature of the Precambrian-Cambrian boundary in the Flinders Ranges suggests a conformable relationship between the Pound Subgroup and the overlying Early Cambrian beds. This is at odds with previous interpretations, which proposed that a regional disconformity occurs at the boundary. Mapping at Mt. Scott Range, Puttapa Syncline and Red Range provided ample evidence that several periods of at least partial lithification occurred within the Pound Subgroup, before the onset of Cambrian deposition. Erosive downcutting marks the contact of the Pound Subgroup-Uratanna Formation at Mt. Scott Range, Red Range and Puttapa Syncline. Erosive downcutting of the Parachilna Formation into the Uratanna Formation was mapped at Mt. Scott Range. The Pound Subgroup-Parachilna Formation contact was mapped as a disconformity which becomes a high angle unconformity near the Beltana Diapir.
Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 1990
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Books on the topic "Precambrian-Cambrian boundary"

1

W, Cowie J., and Brasier M. D, eds. The Precambrian-Cambrian boundary. Oxford: Clarendon Press, 1989.

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2

Moczydłowska, Małgorzata. Acritarch biostratigraphy of the Lower Cambrian and the Precambrian--Cambrian boundary in southeastern Poland. Oslo: Universitetsforlaget, 1991.

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Moczydlowska, Malgorzata. Acritarch biostratigraphy of the Lower Cambrian and the Precambrian--Cambrian boundary in southeastern Poland. Oslo: Universitetsforlaget, 1991.

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4

Ed, Landing, Narbonne Guy M, and Myrow Paul, eds. Trace fossils, small shelly fossils, and the Precambrian-Cambrian boundary: Proceedings, August 8-18, 1987, Memorial University. Albany, NY: New York State Education Dept, 1988.

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Fritz, W. H. Lithology, trace fossils, and correlation of Precambrian-Cambrian boundary beds, Cassiar Mountains, North-Central British Columbia. Ottawa: Energy, Mines and Resources Canada, 1985.

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6

Moczydlowska, M. Acritarch Biostratigraphy of the Lower Cambrian and the Precambrian-Cambrian Boundary, Number 29. Wiley-Blackwell, 2006.

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7

Trace fossils, small shelly fossils, and the Precambrian-Cambrian boundary: Proceedings, August 8-18, 1987, Memorial University. Albany: University of the State of New York, 1988.

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Book chapters on the topic "Precambrian-Cambrian boundary"

1

Brasier, M. D. "Paleoceanography and Changes in the Biological Cycling of Phosphorus across the Precambrian—Cambrian Boundary." In Topics in Geobiology, 483–523. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2427-8_15.

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Mount, Jeffrey F., and Philip W. Signor. "Paleoenvironmental context of the Metazoan radiation event and its impact on the placement of the Precambrian-Cambrian boundary: Examples from the southwestern Great Basin, U.S.A." In Late Proterozoic and Cambrian Tectonics, Sedimentation, and Record of Metazoan Radiation in the Western United States: Pocatello, Idaho, to Reno, Nevada 20–29 July, 1989, 39–46. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft331p0039.

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Pouclet, Andre, Abdellatif Aarab, Abdelilah Fekkak, and Mohammed Benharref. "Geodynamic evolution of the northwestern Paleo-Gondwanan margin in the Moroccan Atlas at the Precambrian-Cambrian boundary." In The Evolution of the Rheic Ocean: From Avalonian-Cadomian Active Margin to Alleghenian-Variscan Collision. Geological Society of America, 2007. http://dx.doi.org/10.1130/2007.2423(02).

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Conference papers on the topic "Precambrian-Cambrian boundary"

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O'Neil, Gretchen R., and Lydia S. Tackett. "PRESERVATIONAL BIASES IN TRACES AND BODY FOSSILS OF WESTERN UNITED STATES PRECAMBRIAN-CAMBRIAN BOUNDARY-SPANNING UNITS." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-340585.

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O'Neil, Gretchen, Lydia Tackett, Michael Meyer, and Simon Darroch. "COMPLEX BURROWING BEHAVIORS ACROSS THE PRECAMBRIAN–CAMBRIAN BOUNDARY IN THE LOWER WOOD CANYON AND DEEP SPRING FORMATIONS." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-356252.

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O'Neil, Gretchen R., and Lydia S. Tackett. "DIVERSITY AND POPULATION DYNAMICS OF RESTING TRACES ACROSS THE PRECAMBRIAN-CAMBRIAN BOUNDARY: COMPLEX INTERACTIONS BETWEEN SURFICIAL BIOTURBATORS AND SESSILE ANIMALS." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323166.

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Reports on the topic "Precambrian-Cambrian boundary"

1

Narbonne, G. M., H. J. Hofmann, and J. D. Aitken. Precambrian-cambrian boundary sequence, Wernecke Mountains, Yukon Territory. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120164.

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Fritz, W. H., and T. P. Crimes. Lithology, trace fossils and correlation of Precambrian-Cambrian boundary beds, Cassiar Mountains, north-central British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/120142.

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Mustard, P. S., J. A. Donaldson, and R. I. Thompson. Trace fossils and stratigraphy of the Precambrian-Cambrian boundary sequence, upper Harper group, Ogilvie Mountains, Yukon. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/122702.

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