The DOI matches its Crossref record; 12 of the 12 references it cites were found in a registry or an index.
Learning to tell Neoproterozoic time
Open accessAbstract
In 1989, the International Commission on Stratigraphy established a Working Group on the Terminal Proterozoic Period. Nine years of intensive, multidisciplinary research by scientists from some two dozen countries have markedly improved the framework for the correlation and calibration of latest Proterozoic events. Three principal phenomena--the Marinoan ice age, Ediacaran animal diversification, and the beginning of the Cambrian Period--specify the limits and character of this interval, but chemostratigraphy and biostratigraphy based on single-celled microfossils (acritarchs), integrated with high-resolution radiometric dates, provide the temporal framework necessary to order and evaluate terminal Proterozoic tectonic, biogeochemical, climatic, and biological events. These data also provide a rational basis for choosing the Global Stratotype Section and Point (GSSP) that will define the beginning of this period. A comparable level of stratigraphic resolution may be achievable for the preceding Cryogenian Period, providing an opportunity to define this interval, as well, in chronostratigraphic terms--perhaps bounded at beginning and end by the onset of Sturtian glaciation and the decay of Marinoan ice sheets, respectively. Limited paleontological, isotopic, and radiometric data additionally suggest a real but more distant prospect of lower Neoproterozoic correlation and stratigraphic subdivision.
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Cites
A Neoproterozoic Snowball Earth
Hoffman, P. F., Kaufman, A. J., Halverson, G. P., & Schrag, D. P. (1998) · Science · doi:10.1126/science.281.5381.1342 · Cited by 2,693
KAUFMAN, A., & KNOLL, A. (1995) · Precambrian Research · doi:10.1016/0301-9268(94)00070-8 · Cited by 1,167
Self-citationBiostratigraphic and Geochronologic Constraints on Early Animal Evolution
Grotzinger, J. P., Bowring, S. A., Saylor, B. Z., & Kaufman, A. J. (1995) · Science · doi:10.1126/science.270.5236.598 · Cited by 701
Isotopes, ice ages, and terminal Proterozoic earth history
Kaufman, A. J., Knoll, A. H., & Narbonne, G. M. (1997) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.94.13.6600 · Cited by 509
Self-citationBrasier, M. D., Shields, G., Kuleshov, V. N., & Zhegallo, E. A. (1996) · Geological Magazine · doi:10.1017/s0016756800007603 · Cited by 331
New shelly fossils from Nama Group, South West Africa
Germs, G. J. B. (1972) · American Journal of Science · doi:10.2475/ajs.272.8.752 · Cited by 277
Derry, L. A., Brasier, M. D., Corfield, R. M., Rozanov, A. Y., & Zhuravlev, A. Y. (1994) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(94)90178-3 · Cited by 266 · cited 4×
“A return of 87Sr/86Sr to valuesprofiles continues to increase and debate about the causes of observed variations remains vigorous, of ca. 0.7080 and subsequent rise (by the Atdabanian) to values as high as 0.7088 appear tobut the summary view of terminal Proterozoic chemostratigraphy remains the same as it was in char…”
ResultInfluentialA composite reference section for terminal Proterozoic strata of southern Namibia
Saylor, B. Z., Kaufman, A. J., Grotzinger, J. P., & Urban, F. (1998) · Journal of Sedimentary Research · doi:10.2110/jsr.68.1223 · Cited by 256
Buick, R., Des Marais, D. J., & Knoll, A. H. (1995) · Chemical Geology · doi:10.1016/0009-2541(95)00049-r · Cited by 222 · cited 1×
“…chronostrati- older Mesoproterozoic successions in Siberia ( Knoll et al., 1995b; Bartley et al., unpublishedgraphically distinct intervals (Table 1) — giving us four rather than three principal subdivisions of data) and elsewhere (Buick et al., 1995; Brasier and Lindsay, 1998; Kah et al., 1999).”
BackgroundSelf-citationEdiacara-type fossils in Cambrian sediments
Jensen, S., Gehling, J. G., & Droser, M. L. (1998) · Nature · doi:10.1038/31215 · Cited by 185
Cited by
The snowball Earth hypothesis: testing the limits of global change
Hoffman, P. F., & Schrag, D. P. (2002) · Terra Nova · doi:10.1046/j.1365-3121.2002.00408.x · Cited by 1,585
A synopsis of events related to the assembly of eastern Gondwana
Meert, J. G. (2003) · Tectonophysics · doi:10.1016/s0040-1951(02)00629-7 · Cited by 1,083
The Neoproterozoic oxygenation event: Environmental perturbations and biogeochemical cycling
Och, L. M., & Shields-Zhou, G. A. (2012) · Earth-Science Reviews · doi:10.1016/j.earscirev.2011.09.004 · Cited by 646
Hoffmann, K.-H., Condon, D. J., Bowring, S. A., & Crowley, J. L. (2004) · Geology · doi:10.1130/g20519.1 · Cited by 567
A ‘snowball Earth’ climate triggered by continental break-up through changes in runoff
Donnadieu, Y., Goddéris, Y., Ramstein, G., Nédélec, A., & Meert, J. (2004) · Nature · doi:10.1038/nature02408 · Cited by 366
Metadata
- Authors
- Knoll, A.
- Venue
- Precambrian Research
- Publisher
- Elsevier BV
- Published
- 2000-03
- Volume
- 100
- Issue
- 1-3
- Pages
- 3-20
- ISSN
- 0301-9268 (ISSN-L)
- OpenAlex
- W2142409030
- Cited by
- 215
- References
- 12
- FWCI
- 15.68
- Type
- journal article
- Language
- en
- Open access
- green
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