Heh. I read through the thread and saw Davey's wailing cry that he couldn't find studies on "thin" laminae less than...eh, .5mm or whatever it was...thus demonstrating that Davey is as inept at LOOKING for data as he is at comprehending data given him. So...I remembered that I might have something to add here that I had saved. Plus I despise the shit-licking little liar (he ran away from the last discussion on this, too)
I kept the following references from our old discussion at IIDB or wherever it was at:
Lake Baikal sediments average about 0.04 to 0.17 mm accumulation per year
Lago Puyehue sediments average ~ 0.5 to 1 mm/yr
In particular, the Lake Puyehue (Chile) varves were studied from 1980-2000 and the varve thickness record is known from limnological readings. Additionally, the varves correlate with known climatological and geological events and radiometric dates. That gives a VERY strong basis for study -- and not "just" the radiometric dates that little Davey says he can't trust...though he's never demonstrated flaws in them.
Baikal sedimentation studies include the TECHNICAP sediment traps that were deployed in Lake Baikal. from 1996 by the GEOPASS-NERC project measuring deposition rates and organismal events. First results of sedimentation rate calculations show highest values on Posolskaya Banka (0.149 cmy-1), and lower values on Continent Ridge (0.057 cmy-1) and Vydrino Shoulder (0.052 cmy-1).
Lake Baikal sediments average about 0.04 to 0.17 mm accumulation per year See:
Boës, Xavier (2005). High resolution sedimentological studies of lacustrine series, search for annual climatic proxies and interhemispheric comparison (examples of Lake Baikal, Siberia, 50 °N and Lake District, Chile, 40°S.) Ph.D dissertation.
http://www.icdp-online.org/contenido...S_PhD_2005.pdf (15 MB)
Sturm, M.; Vologina, E. G.; Baster, I.; Sinnet, B.; Mackay, A. W.; Ryves, D. (2003) Recent sedimentation in Lake Baikal. EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #2822
Quote:
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High-resolution TECHNICAP sediment traps have been deployed in Lake Baikal since 1996....First results of sedimentation rate calculations show highest values on Posolskaya Banka (0.149 cmy-1), and lower values on Continent Ridge (0.057 cmy-1) and Vydrino Shoulder (0.052 cmy-1). http://adsabs.harvard.edu/abs/2003EAEJA.....2822S
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Flower R.J., Battarbee R.W., Lees J., Levina O.V., Jewson D., Mackay A.W., Ryves D.V., Sturm M., Vologina E.G. (1998) A GEOPASS-NERC project on diatom deposition and sediment accumulation in Lake Baikal, Siberia. Freshwater Biol. Assoc.; 1998; 11: 16-29.
Flower R.J., Ryves D.M., Mackay A.W., Battarbee R.W., Sturm M. (1997) Diatom deposition and sediment laminations in Lake Baikal, Siberia. Wuerzburger Geographische Manuskripte: Abstract Volume; 1997; 41.
Sturm,M., V.Matta, M.Schurter, A.Zwyssig, E.Vologina, O.Levina, R.Gnatovsky, R.J.Flower, D.Ryves, J.Lees & D.Jewson (1997) Pattern of recent sedimentation in Lake Baikal.
Results of high-resolution traps and short cores. Vol.abstract 7th Paleolimnology Conference August 1997, Heiligenkreuztal/Germany
Appleby P.G., Flower R.J., Mackay A.W., Rose N.L. (1998) Paleolimnological assessment of recent environmental change in Lake Baikal: sediment chronology. J. Paleolimnol.; 1998; 20: 119-133.
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More On Baikal:
Battarbee R., Mackay (1999) A. Biogenic composition of recent sediments: diatoms. Baikal Symposium and 1st Baikal-Sed Workshop: Abstracts; Nov. 18-22, 1999; Berlin / Potsdam; 1999: 25-27.
Bezrukova E.V. (1999) Biogenic composition of Lake Baikal recent sediments (pollen and spores of plants). Baikal Symposium and 1st Baikal-Sed Workshop: Abstracts; Nov. 18-22, 1999; Berlin / Potsdam; 1999: 24.
Bulnayev A.I. (1995) Neutron Activation Analysis Investigation of the Composition and Geochemical Peculiarities of Lake Baikal Bottom Sediments. Analyst; 1995; 120(5): 1445-1452.
Callender E., Deike R.G., Rossmann R. (1991) Geochemical and mineralogic indicators of sedimentation in Lake Baikal, South-Eastern Siberia, USSR. Eos Trans. AGU: Spring Meeting; 1991;72(17.V42C-12.1630h): 307.
Demory, F., Nowaczyk,N.R.,Witt, A., Oberhansli, H., (2005) .High-resolution magneto stratigraphy of late Quaternary sediments from Lake Baikal, Siberia: timing of intracontinental paleoclimatic responses.Glob.Planet.Change 46,167-186.
De Batist M. Recent and sub-recent sedimentation in Lake Baikal insights from seismic records.(1999) Baikal Symposium and 1st Baikal-Sed Workshop: Abstracts; Nov. 18-22, 1999; Berlin / Potsdam 1999: 28-29.
Francus P., Sturm M. Suspended particles and sediment formation..(1999) Baikal Symposium and 1st Baikal-Sed Workshop: Abstracts; Nov. 18-22, 1999; Berlin / Potsdam; 1999: 17-18.
Goldberg E.L., Phedorin M.A., Grachev M.A., Bobrov V.A., Dolbnya I.P., Khlystov O.M., Levina O.V., Ziborova G.A.(2000) Geochemical signals of orbital forcing in the records of paleoclimates found in the sediments of Lake Baikal. Nucl. Instrum. and Meth. in Phys. Res. A; 2000; 448(1-2): 384-393
Granina,L.Z., Grachev,M.A., Karabanov,E.B., Kuptsov,V.M., Shimaraeva,M.K., Williams,D.F., (1993) Accumulation of biogenic silica in bottom sediments of Baikal. Russ.J.Geol.Geophys.34,126-135
Granina L., Werhli B..(1999) The sediment-water interface in Lake Baikal. Baikal Symposium and 1st Baikal-Sed Workshop: Abstracts; Nov. 18-22, 1999; Berlin / Potsdam; 1999: 21-22.
Karabanov E., Bezrukova E.V., Granina L., Inouchi Y., Laso F., Letunova P., Mukhina V.,
Shimaraeva M., Stolbova E. (1992) Climatic sedimentation rhythms of Baikal sediments. International Project on Paleolimnology and Late Cenozoic Climate / IPPCCE Newsletter; 1992; 6: 21-30.
Karabanov E.B., Colman S.M., Nelson K.H. (1992) Pelagic sedimentary complexes and sedimentation conditions in Lake Baikal, Siberia. Eos Trans. AGU: Fall Meeting / Suppl.; 1992; 73(43)
Peck, J.A., King, J.W., Colman,S.M., Kravchinsky,V. (1994) A rock magnetic record from Lake Baikal, Siberia: evidence for Quaternary climate change. Earth Planet.Sci.Lett.122, 221-238.
Piotrowska, N., Bluszcz,A., Demske,D., Granoszewski,W., Heumann,G (2004) Extraction and AMS radiocarbon dating of pollen from Lake Baikal sediments. Radiocarbon. vol. 46 (1), no 1 (17 ref.), pp. 181-187
Popovskaya,G.I., (2000) .Ecological monitoring of phytoplankton in Lake Baikal. Aquat.Ecosyst.HealthManag.3, 215-225.
For Both Chilean and Baikal data:
Boës, Xavier (2005). High resolution sedimentological studies of lacustrine series, search for annual climatic proxies and interhemispheric comparison (examples of Lake Baikal, Siberia, 50 °N and Lake District, Chile, 40°S.) Ph.D dissertation.
http://www.icdp-online.org/contenido...S_PhD_2005.pdf
For Puyehue
Arnaud F., Magand O., Chapron E., Bertrand S., Boës X., and Mélières M.A., (2006) .Radionuclide dating (210Pb, 137Cs, 241Am) of recent lake sediments in a highly active geodynamic setting (Lakes Puyehue and Icalma-Chilean Lake District). Science of the Total Environment Volume 366, Issues 2-3 , 1 August 2006, Pages 837-850
http://www.limnogeology.ethz.ch/Arnaud2006.pdf
"radionuclides can be used to provide approximate dates for sediment. Independent confirmation of these dates can be provided by varve counting and/or the recognition of historical events. For Lake Puyehue, this approach has allowed particular sediment features to be related to the effects of the 1960 Chilean earthquake (Mw 9.5) on the lake basin and its catchment area. For
Lake Icalma, there is a good agreement between radionuclide dates and the dates of the three tephra layers formed during large eruptions of the Llaima volcano in 1946, 1917 and 1883. For both lakes, artificial radionuclide fallout, which culminated in 1965, provides more robust chronological information than 210Pb dating."
The sediments present several intercalated beds, i.e. tephra layers related to volcanic events and/or homogeneous layers related to major seismic events (Fig. 4). The regional volcanic activity recorded in Lago Puyehue sediments is mainly related to Osorno (41°S) and Cordon Caulle/Puyehue (40°S) volcanoes (Bertrand et al. this issue). The seismic layers recorded in Lago Puyehue sediments are related to the strong tectonic activity reported between 39-41°S .
Bertrand S., Charlet F., Charlier B., Renson V., Fagel N., (2008). Climate variability of southern Chile since the Last Glacial Maximum : a continuous sedimentological record from Lago Puyehue, 40°S. J. of Paleolimn. Volume 39, Number 2 / February, 2008
Bertrand S.,( 2005). Sédimentation lacustre postérieure au dernier maximum glaciaire dans les lacs Icalma et Puyehue (Chili méridional) : reconstitution de la variabilité climatique et des
événements sismo-tectoniques. Thèse, Université de Liège, 266 pp.
Bertrand S., Boës X., Castiaux J., Charlet F., Urrutia R., Espinoza C., Charlier B., Lepoint G. and
Fagel N., (2005). Temporal evolution of sediment supply in Puyehue Lake (Southern Chile) during
the last 600 years: climatic significance. Quat. Res. 64, 163-175
Campos H., Steffen W., Agüero G., Parra O., and Zuniga L., (1989) . Estudios Limnologicos en el lago Puyehue (Chile): Morfometria, factores fisicos y quimicos, plankton y productividad primaria. Medio Ambiente. 10: 36-53
Pezoa Gutiérrez L.S., (2003). Recopilacion y analisis de la variation de las temperatures (periodo 1965-2001) y las precipitaciones (periodo 1931-2001) a partir de la informacion de estaciones meteorologicas de Chile entre los 33°y 53° de latitude Sur. Universidad Austral de Chile, Thesis, 99 pp.
Soto D., (2002). Patrones oligotróficos en lagos del sur de Chile: relevancia de los nutrientes y de la profundidad de mezcla. Revista Chilena de Historia Natural. 75: 377-393.
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Other relevant studies:
Boës, Xavier and Nathalie Fagel.(2005) Impregnation method for detecting annual laminations in sediment cores: An overview. Sedimentary Geology, Volume 179, Issues 3-4, 15 August 2005, Pages 185-194
Brauer, A. and J. F. W. Negendank.(2002) The value of annually laminated lake sediments in Palaeoenvironment reconstruction. Quaternary International, Volume 88, Issue 1, February 2002, Pages 1-3
Brauer A., (2004). Annually laminated lake sediments and their palaeoclimatic relevance. In: Fischer H., Kumke T., Lohmann G., Flöser G., Miller H., von Storch H., and Negendank J.F.W. (Eds.) The Climate in Historical Times. Towards a Synthesis of Holocene Proxy Data and Climate Models. Springer, pp. 109-128.
Brauer, A. and J. F. W. Negendank (2004) The European Lake Drilling Programme (ELDP) from 1996-2001: high-resolution lake sediment records in climate and environment variability studies. Quaternary International, Volume 122, Issue 1, 2004, Pages 1-5
Card V., (1997) . Varve-counting by the annual pattern of diatoms accumulated in the sediments of Big Watab Lake, Minnesota, AD 1837-1990. Boreas 26, 103-112.
Dean, Walter E., Anderson, Roger Y., Bradbury, J. Platt, and David M. Anderson, (2002) . A 1500-year record of climatic and environmental change in Elk Lake, Minnesota I: Varve thickness and gray-scale density. Journal of Paleolimnology, 27:287-299.
Desloges, Joseph R.(1994) Varve Deposition and the Sediment Yield Record at Three Small Lakes of the Southern Canadian Cordillera. Arctic and Alpine Research, Vol. 26, No. 2 (May, 1994), pp. 130-140
Dickman, Michael (1985) Seasonal succession and microlamina formation in a meromictic lake displaying varved sediments. Sedimentology 32 (1), 109-118.
Hammer, Theodore U. (1994) Life and Times of Five Saskatchewan Saline Meromictic Lakes. Internationale Revue der gesamten Hydrobiologie und Hydrographie 79:2, 235
Ising, Jonas.(2001) Late Weichselian pollen stratigraphy, clay varve chronology and palaeomagnetic secular variations in Lake Bolmen, Småland, south Sweden Boreas: An International Journal of Quaternary Research , Volume 30, Issue 3, 2001, Pages 189 - 204
Kemp A.E.S., Dean J., Pearce R.B., and Pike J., (2001). Recognition and analysis of bedding and sediment fabric features. In: Last W.M., Smol J.P. (Eds.), Tracking Environmental Change
Using Lake sediments. Physical and geochemical Methods. Kluwer Academic Publishers,
Dordrecht, the Nederlands. Vol. 2, pp. 7-22
Lotter; André F. and Gerry Lemcke (1999) Methods for preparing and counting biochemical varves. Boreas Volume28, Issue 2, June 1999, pages 243 - 252
Lotter, AF; Sturm, M; Teranes, JL; Wehrli, B (1997) Varve formation since 1885 and high-resolution varve analyses in hypertrophic Baldeggersee (Switzerland). Aquatic Sciences. Vol. 59, no. 4, pp. 304-325. 1997.
http://library.eawag.ch/EAWAG-Public...awag_02384.pdf
Ojala, Antti E. K. and Mia Tiljander.(2003) Testing the fidelity of sediment chronology: comparison of varve and paleomagnetic results from Holocene lake sediments from central Finland. Quaternary Science Reviews, Volume 22, Issues 15-17, July-August 2003, Pages 1787-1803
Tiljander M; Ojala A.; Saarinen T.; Snowball I. (2002) Documentation of the physical properties of annually laminated (varved) sediments at a sub-annual to decadal resolution for environmental interpretation. Quaternary International , Volume 88, Number 1, February 2002, pp. 5-12(8)
Vos, H. ; Sanchez, A.; Zolitschka, B.; et al. (1997). Solar Activity Variations Recorded in Varved Sediments from the Crater Lake of Holzmaar a Maar Lake in the Westeifel Volcanic Field, Germany . Surveys in Geophysics, vol. 18, Issue 2, p.163-182
Zolitchka B., (1996). High resolution lacustrine sediments and their potential for palaeoclimatic reconstruction. In : Jones P.D., Bradley R.S. and Jouzel J. (Eds), Climatic variations and forcing mechanisms of the last 2000 years. NATO ASI series. 141, pp. 453-478.
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Varves correlate with multiple independent curves from multiple disciplines...Paleomagnetic. Corals. Speleothems --
Volcanic tephra IN the varves.
Atmospheric variations IN the varves
Climatic data ranging from El Nino oscillations to Milankovitch cycles and ice ages IN the varves.
Fossils IN the varves.
Radiometric dates FROM the varves.
Paleomagnetic materials IN the varves.
Radiocarbon IN the varves.
Earthquake signatures IN the varves.
On a more personal note, AFDave Hawkins...you should be very, very glad you never decided to take me up on the accepted invitations and challenges you issued (To go to the Grand Canyon to collect samples, Collecting coal samples in the American Southwest). Given your pathological lying and smarmy, simpering personality, you wouldn't have gone home quite the same.
In the meantime -- I hope the kids you lie to...including your own... grow up to literally kick the crap out of you.