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Journal articles on the topic 'Paleomagnetic dating'

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Published: 10 March 2023

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1

Shitaoka, Yorinao, Takeshi Saito, Junji Yamamoto, Masaya Miyoshi, Hidemi Ishibashi, and Tsutomu Soda. "Eruption age of Kannabe volcano using multi-dating: Implications for age determination of young basaltic lava flow." Geochronometria 46, no. 1 (April 22, 2019): 49–56. http://dx.doi.org/10.1515/geochr-2015-0108.

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Abstract We estimated the eruption age of Kannabe volcano, located in southwestern Japan. Although the eruption age had been estimated using tephrochronology and K-Ar dating, the precision of its age determination left some room for improvement. The latest eruption age of Kannabe volcano is well constrained by wide spread tephras to ca. 7.2–30 ka. We applied paleomagnetic dating to a basaltic lava and optically stimulated luminescence (OSL) dating to a soil layer, which are associated with the Kannabe volcano. The soil layer above the Kannabe scoria was newly dated to be 21 ± 6 ka, as inferred from OSL dating. We also made paleomagnetic investigation to estimate the eruption age of the Kannabe basaltic lava. Paleomagnetic data of 23 rock samples from six locations in the Kannabe basaltic lava showed good mutual agreement. The average of remanent magnetizations yields declination of 0.3° and inclination of 65.9° with 95% confidence limit of 2.7°. This paleomagnetic direction with a relatively steep inclination is thought to be correlated with the paleomagnetic secular variation data of sediments in Lake Biwa at ca. 21.5 ka. Based on that information from multi-dating, we inferred that the Kannabe volcano erupted at ca. 22 ka. This result presents profound scientific implications for the precise age determination of young basaltic lava flow, for which few dating methods exist.

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2

Kravchinsky, Vadim A., D. Roy Eccles, Rui Zhang, and Matthew Cannon. "Paleomagnetic dating of the northern Alberta kimberlites." Canadian Journal of Earth Sciences 46, no. 4 (April 2009): 231–45. http://dx.doi.org/10.1139/e09-016.

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Due to the vast amount of economic interest diamonds have created in northern Alberta, there is a need to produce an accurate geological model for the northern Alberta kimberlite province. To aid in the development of such a model, the emplacement ages of two kimberlite occurrences, K5 and K6 from the Buffalo Head Hills region of north-central Alberta, and the ultramafic Mountain Lake body from northwestern Alberta were estimated using paleomagnetic methods. Paleomagnetic poles obtained in our study do not differ statistically from the reference poles for late Mesozoic – Cenozoic for North America ( Besse and Courtillot 2002 ). With the aid of polarity determinations, palynology, and radiogenic dating, the paleomagnetic results allow for new constraints on the emplacement age of the selected ultramafic occurrences. The paleomagnetic emplacement ages established for the K5, K6, and Mountain Lake bodies are 90–83 Ma, 83.0–79.1 Ma, and not older than 79.1 Ma, respectively.

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Hnatyshin, Danny, and Vadim A. Kravchinsky. "Paleomagnetic dating: Methods, MATLAB software, example." Tectonophysics 630 (September 2014): 103–12. http://dx.doi.org/10.1016/j.tecto.2014.05.013.

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4

Kristjánsson, L., H. Jóhannesson, J. Eiríksson, and A. I. Gudmundsson. "Brunhes–Matuyama paleomagnetism in three lava sections in Iceland." Canadian Journal of Earth Sciences 25, no. 2 (February 1, 1988): 215–25. http://dx.doi.org/10.1139/e88-024.

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This paper reviews previous field research on the paleomagnetism of volcanics in Iceland at localities whose age is presumed to span the Brunhes–Matuyama chron boundary. Additional mapping and laboratory measurements are presented from three localities of late Quaternary reverse-to-normal transitions. At two, Tjörnes in north Iceland and Eyjafjöll in south Iceland, the identity of the transition is confirmed by K–Ar dating. At Tjörnes and at Ingólfsfjall in southwest Iceland, short-period variations of the paleomagnetic field are demonstrated to be useful in stratigraphic mapping.

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Blanco, Dunia, Vadim A. Kravchinsky, Konstantin M. Konstantinov, and Konstantin Kabin. "Paleomagnetic dating of Phanerozoic kimberlites in Siberia." Journal of Applied Geophysics 88 (January 2013): 139–53. http://dx.doi.org/10.1016/j.jappgeo.2012.11.002.

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6

Mothersill, John S. "Paleomagnetic dating of postglacial sediments, Vancouver Island, Canada." Physics of the Earth and Planetary Interiors 56, no. 1-2 (July 1989): 96–104. http://dx.doi.org/10.1016/0031-9201(89)90039-3.

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7

Buchan, K. L., J. K. Mortensen, and K. D. Card. "Northeast-trending Early Proterozoic dykes of southern Superior Province: multiple episodes of emplacement recognized from integrated paleomagnetism and U–Pb geochronology." Canadian Journal of Earth Sciences 30, no. 6 (June 1, 1993): 1286–96. http://dx.doi.org/10.1139/e93-110.

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Integrated paleomagnetic and U–Pb geochronologic studies have been conducted to establish the paleomagnetic directions and ages of Early Proterozoic tholeiitic dykes of northeast trend in the southern Superior Province, previously referred to collectively as Preissac dykes. It is demonstrated that they are readily separated on the basis of paleomagnetism into subsets, referred to as the Biscotasing and Senneterre swarms. In addition a pair of unnamed dykes may be associated with the north-and northwest-trending Matachewan swarm farther west.Biscotasing dykes have a down-west magnetization of single polarity with a corresponding paleopole at 27.8°N, 136.7°W (dm = 12.3° and dp = 9.4°). Senneterre dykes carry an up-north (or occasionally down-south) direction with corresponding paleopole at 15.3°S, 75.7°W (dm = 7.0°, dp = 4.4°). The Senneterre direction is indistinguishable from the primary N1 remanence direction that dominates the magnetization of Nipissing sills of the Southern Province. Paleomagnetic field tests described herein or in earlier studies indicate that Biscotasing and Senneterre directions are primary and, hence, that two ages of intrusion are involved, with the age of Senneterre dykes coinciding with the intrusion of most Nipissing sills. U–Pb dating of baddeleyite conducted at a paleomagnetic sampling site yields an age of 2214.3 ± 12.4 Ma for the Senneterre swarm, indistinguishable from the age of 2217.2 ± 4 Ma reported from an N1 Nipissing sill site in another study. A U–Pb age on baddeleyite and zircon of 2166.7 ± 1.4 Ma was obtained from a paleomagnetic site in the Biscotasing swarm. The primary paleopoles for the Senneterre, Nipissing, and Biscotasing rocks define a direction of polar wander opposite to that of the most widely used polar wander paths for North America for this period, suggesting that these paths should no longer be used.

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8

Willmott, Verónica, Eugene W. Domack, Miquel Canals, and Stefanie Brachfeld. "A high resolution relative paleointensity record from the Gerlache-Boyd paleo-ice stream region, northern Antarctic Peninsula." Quaternary Research 66, no. 1 (July 2006): 1–11. http://dx.doi.org/10.1016/j.yqres.2006.01.006.

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AbstractHerein we document and interpret an absolute chronological dating attempt using geomagnetic paleointensity data from a post-glacial sediment drape on the western Antarctic Peninsula continental shelf. Our results demonstrate that absolute dating can be established in Holocene Antarctic shelf sediments that lack suitable material for radiocarbon dating. Two jumbo piston cores of 10-m length were collected in the Western Bransfield Basin. The cores preserve a strong, stable remanent magnetization and meet the magnetic mineral assemblage criteria recommended for reliable paleointensity analyses. The relative paleomagnetic intensity records were tuned to published absolute and relative paleomagnetic stacks, which yielded a record of the last ∼8500 years for the post-glacial drape. Four tephra layers associated with documented eruptions of nearby Deception Island have been dated at 3.31, 3.73, 4.44, and 6.86 ± 0.07 ka using the geomagnetic paleointensity method. This study establishes the dual role of geomagnetic paleointensity and tephrochronology in marine sediments across both sides of the northern Antarctic Peninsula.

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9

Elmore, R. Douglas, William Dunn, and Craig Peck. "Absolute dating of dedolomitization by means of paleomagnetic techniques." Geology 13, no. 8 (1985): 558. http://dx.doi.org/10.1130/0091-7613(1985)13<558:adodbm>2.0.co;2.

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HOLCOMB, ROBIN, DUANE CHAMPION, and MICHAEL McWILLIAMS. "Dating recent Hawaiian lava flows using paleomagnetic secular variation." Geological Society of America Bulletin 97, no. 7 (1986): 829. http://dx.doi.org/10.1130/0016-7606(1986)97<829:drhlfu>2.0.co;2.

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11

Eppelbaum, Lev V., and Youri I. Katz. "Paleomagnetic-Geodynamic Mapping of the Transition Zone from Ocean to the Continent: A Review." Applied Sciences 12, no. 11 (May 27, 2022): 5419. http://dx.doi.org/10.3390/app12115419.

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The easternmost Mediterranean is a distinct transition zone from the ocean to the continent located at the junction between the largest Earth’s lithospheric segments: Eurasian and African. The methodology of paleomagnetic mapping of such transition zones is based on integrating the mapping techniques for both continental and oceanic platforms: paleomagnetic reconstructions, results of radiometric dating of magnetized rocks, tectonic-structural reconstructions, biogeography, and utilization of the results of various geophysical surveys. The geodynamic-paleomagnetic mapping makes it possible to reveal the multilevel structural heterogeneity and display complex elements of the geodynamics of different ages inherent in this transition zone. The region of northern Israel is the most complex area in the easternmost Mediterranean. For the combined paleomagnetic mapping, well-studied paleomagnetically and radiometrically areas were selected: (1) the Carmel area, (2) the Atlit area (internal part of the Carmel area), (3) the Sea of Galilee with the adjoining zones (primarily, the Kinnarot Valley), and (4) the area of the Hula Basin with adjacent areas of the Golan Plateau, Hermon Mt., and Galilea uplift. The constructed paleomagnetic profiles for the Carmel area (on the top of the accumulative surface of the Lower Cretaceous traps) and the Kinnarot Valley—Sea of Galilee—Hula Basin, evidently indicate the complex history of the paleogeodynamic evolution of the region. These studies demonstrate the effectiveness of paleomagnetic mapping integrated with paleomagnetic profiles crossing these geologically complex areas.

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12

Zander, A., and A. Hilgers. "Potential and limits of OSL, TT-OSL, IRSL and pIRIR<sub>290</sub> dating methods applied on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia." Climate of the Past 9, no. 2 (March 14, 2013): 719–33. http://dx.doi.org/10.5194/cp-9-719-2013.

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Abstract. This study tests the paleomagnetic and proxy-data based Mid- to Upper Pleistocene sediment deposition history of Lake El'gygytgyn by applying different approaches of luminescence dating techniques on sediment cores taken from the centre of the 175 m deep lake. For dating polymineral and quartz fine grains (4–11 μm grain size range) were extracted from nine different levels from the upper 28 m of sediment cores 5011-1A and 5011-1B. According to the independent age model, the lowest sample from 27.8–27.9 m below lake bottom level correlates to the Brunhes-Matuyama (B/M) reversal. Polymineral sub-samples were analysed by infra-red stimulated luminescence (IRSL) and post-IR IRSL measured at 290 °C (pIRIR290) using single aliquot regenerative dose (SAR) sequences. SAR protocols were further applied to measure the blue light optically stimulated luminescence (OSL) and thermally-transferred OSL (TT-OSL) of fine-grained quartz supplemented by a multiple aliquot approach. Neither low temperature IRSL measurements at 50 °C nor any OSL dating approach on quartz yielded reliable results. Deconvolution of their dose response curves revealed a pseudo-increase of the dose response curves and explains the observed underestimation. The pIRIR protocol applied to polymineral fine grains was the only luminescence technique able to provide dating results of acceptable accuracy up to ca. 700 ka when correlated to the existing proxy-data and paleomagnetic based age record. We present the potential and limits of the different dating techniques and a correlation of pIRIR290 results with the proxy-data based age model.

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13

Mothersill, John S. "Paleomagnetic dating of late glacial and postglacial sediments in Lake Superior." Canadian Journal of Earth Sciences 25, no. 11 (November 1, 1988): 1791–99. http://dx.doi.org/10.1139/e88-169.

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The oldest unit of the late Quaternary sedimentary sequence of Lake Superior consists of glacial till that was deposited about 9900 years BP during the last glacial readvance into the Lake Superior basin. The till deposits are unconformably overlain by a thin sequence of bedded sands and silts, which are overlain by a thick sequence of varved sediments (> 10 m in thickness), which in turn are overlain by postglacial silty clays.Unfortunately, 14C has not been found to be a useful tool in dating the late glacial and postglacial sediments of Lake Superior. However, paleodeclination and paleoinclination logs provide a useful method of correlating and indirectly dating cores taken of the late glacial and postglacial sediments. It is concluded from paleomagnetic dating that rhythmic sedimentation ceased before 9200 years BP in the southeastern lake proper and at about 8700 years BP in the southeastern bay areas. However, rhythmic sedimentation continued until about 8200 years BP in the northern part of Lake Superior and until about 8000 years BP in the Nipigon Bay area.

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14

Mothersill, John S. "Dating of paleomagnetic logs by tephra layers, Mara Lake, Canada." Studia Geophysica et Geodaetica 35, no. 4 (December 1991): 302–13. http://dx.doi.org/10.1007/bf01613976.

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15

Wang, Hongqiang, Chenglong Deng, Rixiang Zhu, Qi Wei, Yamei Hou, and Eric Boëda. "Magnetostratigraphic dating of the Donggutuo and Maliang Paleolithic sites in the Nihewan Basin, North China." Quaternary Research 64, no. 1 (July 2005): 1–11. http://dx.doi.org/10.1016/j.yqres.2005.04.001.

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AbstractA detailed magnetostratigraphic investigation, coupled with rock-magnetic studies, was carried out on a lacustrine sequence in the eastern Nihewan Basin, Northern China, which contains the Donggutuo and Maliang Paleolithic sites. Magnetite and hematite were identified as the main carriers for the characteristic remanent magnetizations. Magnetostratigraphic results show that the lacustrine sequence recorded the late Matuyama and Brunhes chrons. Furthermore, the Maliang artifact layer occurs just below the Brunhes/Matuyama boundary, and the Donggutuo artifact layer is just below the Jaramillo onset. Therefore, the age of the Maliang and Donggutuo artifact layers can be definitely estimated to be about 0.78 myr and 1.1 myr, respectively. These two paleomagnetic ages, coupled with previously obtained paleomagnetic data of the Majuangou, Xiaochangliang, Banshan, Lantian, and Xihoudu Paleolithic sites, suggest an expansion and lengthy flourishing of human groups from northern to north-central China during the entire Early Pleistocene.

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16

Malyshev, Sergey, Aleksander Pasenko, Aleksei Ivanov, Dmitrii Gladkochub, Valery Savatenkov, Sebastien Meffre, Adam Abersteiner, Vadim Kamenetsky, and Vasiliy Shcherbakov. "Geodynamic Significance of the Mesoproterozoic Magmatism of the Udzha Paleo-Rift (Northern Siberian Craton) Based on U-Pb Geochronology and Paleomagnetic Data." Minerals 8, no. 12 (November 29, 2018): 555. http://dx.doi.org/10.3390/min8120555.

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The emplacement age of the Great Udzha Dyke (northern Siberian Craton) was determined by the U-Pb dating of apatite using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). This produced an age of 1386 ± 30 Ma. This dyke along with two other adjacent intrusions, which cross-cut the sedimentary units of the Udzha paleo-rift, were subjected to paleomagnetic investigation. The paleomagnetic poles for the Udzha paleo-rift intrusions are consistent with previous results published for the Chieress dyke in the Anabar shield of the Siberian Craton (1384 ± 2 Ma). Our results suggest that there was a period of intense volcanism in the northern Siberian Craton, as well as allow us to reconstruct the apparent migration of the Siberian Craton during the Mesoproterozoic.

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17

Reynolds, P. H. "40Ar/39Ar dating of the Mealy dykes of Labrador: paleomagnetic implications." Canadian Journal of Earth Sciences 26, no. 8 (August 1, 1989): 1567–73. http://dx.doi.org/10.1139/e89-133.

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40Ar/39Ar age spectrum data are presented for amphibole and biotite from four dykes representing the diabase swarm in the Mealy Mountains Terrane, Grenville Province, Labrador. An amphibole plateau age of ca. 1215 Ma is recorded by two of the dykes. A third amphibole records a younger age (ca. 1150 Ma) through an apparent veil of excess radiogenic argon. It is suggested that the ca. 1215 Ma age may closely approximate the time of dyke intrusion; the third amphibole, from a dyke relatively close to the terrane boundary, may have been significantly overprinted by heat associated with the Grenville Orogeny. Two of the four biotite age spectra are discordant; apparent ages range from ~980 to 1060 Ma. It is suggested that Grenvillian reheating caused gas loss from all four biotites, the loss having been complete in two, including the one closest to the terrane boundary.Mealy dyke B paleopoles plot on and about the Grenville Track close to the calibrated 980 Ma point. This observation is consistent with observed magnetic "unblocking" temperatures, taken in conjunction with the extent of Grenvillian reheating as estimated from the biotite data. It is suggested that the Mealy A magnetization is much older and cannot be used to define the eastern (descending) arm of the Grenville apparent polar wander track. A plausible structural correction (to compensate for Grenvillian thrusting) could bring the A paleopoles close to the ca. 1200–1250 Ma point on the North American polar wander track; the latter is considered to be the most likely age.

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Pannalal, S. J., D. T. A. Symons, and D. F. Sangster. "Paleomagnetic dating of Upper Mississippi Valley zinc–lead mineralisation, WI, USA." Journal of Applied Geophysics 56, no. 2 (June 2004): 135–53. http://dx.doi.org/10.1016/j.jappgeo.2004.04.006.

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19

Liddicoat, Joseph C., and Robert S. Coe. "Paleomagnetic Investigation of Lake Lahontan Sediments and Its Application for Dating Pluvial Events in the Northwestern Great Basin." Quaternary Research 47, no. 1 (January 1997): 45–53. http://dx.doi.org/10.1006/qres.1996.1867.

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AbstractA comparison of paleomagnetic secular variation in sediment of Pleistocene Lake Lahontan in the northwestern Great Basin with secular variation in lake sediment in the Mono Basin, California, indicates that Lake Lahontan was in the valley of the Truckee River between Pyramid Lake and Wadsworth, Nevada, from about 19,000 to 13,000 yr B.P. The secular variation in older Lake Lahontan sediment in the Truckee River valley has the general features of secular variation in middle Pleistocene lacustrine sediments near Rye Patch Dam, Nevada, 125 km to the east. On the basis of field mapping and tephrochronology, the sections of older lacustrine sediments are not coeval. The apparent, but erroneous, correlation of those sediments emphasizes the need for multiple dating methods when paleomagnetic secular variation is used to date stratigraphy.

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20

Lilley, F. E. M. "Demonstrating That Continents Had Drifted: Paleomagnetic Measurements at the Australian National University 1952 - 1964." Historical Records of Australian Science 23, no. 1 (2012): 1. http://dx.doi.org/10.1071/hr12003.

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Over fifty years ago, the new Department of Geophysics of the Australian National University in Canberra pursued research in paleomagnetism which was to be fundamental to the major developments in Earth Sciences now known as the plate tectonics revolution. In the setting of some then unexplained phenomena such as reversely magnetized rocks, and slightly in advance of fundamental developments in the dating of rocks using radioactive decay schemes of naturally-occurring isotopes, a team led by Edward Irving obtained data for the Australian continent which, accepted and combined with data from Europe and North America, demanded that major continents of the globe had moved relative to each other over geological time. Generally these facts are recognised in histories of science, however such histories usually do not record the local Australian National University setting, which it is intended to describe in this paper. Essential for the paleomagnetic work was the skilled support of a wide range of Australian geologists, who guided collection strategy and supplied oriented samples that had been collected continent-wide. It may also be little appreciated that the first paleomagnetic measurements at the Australian National University were carried out by J. C. Jaeger on samples of Tasmanian dolerite, following work on the same rock by P. M. S. Blackett's group in England. Because these cores were vertical and the magnetization in them approximately vertical, that they were not oriented with regard to horizontal direction was unimportant. Their vertical magnetization gave a forerunner of the continental-drift result.

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Gattacceca, Jérôme, William Zylberman, Adam B. Coulter, François Demory, Yoann Quesnel, Pierre Rochette, Gordon R. Osinski, and Brenuchon Edwige. "Paleomagnetism and rock magnetism of East and West Clearwater Lake impact structures." Canadian Journal of Earth Sciences 56, no. 9 (September 2019): 983–93. http://dx.doi.org/10.1139/cjes-2018-0291.

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The East and West Cleawater Lake impact structures (Wiyâshâkimî Lake, Québec), ∼26 and 32 km in diameter, respectively, have been proposed to represent an impact doublet. We investigated their paleomagnetism to contribute to this debate. The paleomagnetic directions of the impact melt rocks and impact melt-bearing breccias from the West Clearwater structure are compatible with the radiometric age of 280–290 Ma previously determined for this structure and indicate that the impact occurred during a reverse polarity interval of the geomagnetic field. A similar remagnetization direction is found in the basement within 10 km of the structure center, whereas basement farther away from the center has escaped remagnetization by the impact. Samples for the East Clearwater structure come from two holes drilled in 1963 and 1964. Unfortunately, the drill hole through the melt rocks is tilted by 30° from the vertical with an unknown azimuth. The paleomagnetic inclination of these melt rocks cannot be constrained to better than between −28° and +32°. This is, however, distinct from the inclination of the melt rocks of the West Clearwater Lake impact structure (−27.8° ± 3.7°), suggesting that the two structures do not represent an impact doublet, in agreement with recent radiometric dating. The basement rocks and the melt rocks within 10 km of the center of the West Clearwater Lake impact structure show a magnetic signature of titanohematite that crystallized during postimpact hydrothermal activity under oxidizing conditions. This is not observed in the basement or the melt rocks from the East Clearwater Lake impact structure.

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Zheng, Yan, Hongbo Zheng, Qianying Guo, Qing Yang, Zhujun Hu, Xinya Yao, Xinying Zhou, Keliang Zhao, Xiaoqiang Li, and Chenglong Deng. "Dating the Hemudu Neolithic rice cultivation site, East China, by paleomagnetic chronostratigraphy." Palaeogeography, Palaeoclimatology, Palaeoecology 569 (May 2021): 110297. http://dx.doi.org/10.1016/j.palaeo.2021.110297.

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23

Mochizuki, Nobutatsu, Hideo Tsunakawa, Hidetoshi Shibuya, Takahiro Tagami, Ayako Ozawa, and Ian E. M. Smith. "Further K-Ar dating and paleomagnetic study of the Auckland geomagnetic excursions." Earth, Planets and Space 59, no. 7 (July 2007): 755–61. http://dx.doi.org/10.1186/bf03352738.

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Symons, D. T. A., and D. C. Arne. "Paleomagnetic dating of mineralization in the Kapok MVTdeposit, Lennard Shelf, Western Australia." Journal of Geochemical Exploration 78-79 (May 2003): 267–72. http://dx.doi.org/10.1016/s0375-6742(03)00022-0.

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Morinaga, Hayao, Takafumi Yonezawa, Yasuhisa Adachi, Hiroo Inokuchi, Hiroya Goto, and Katsumi Yaskawa. "The possibility of inferring paleoseismicity from paleomagnetic dating of speleothems, western Japan." Tectonophysics 230, no. 3-4 (February 1994): 241–48. http://dx.doi.org/10.1016/0040-1951(94)90138-4.

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Dunlop, David J. "Grenvillia and Laurentia — a Precambrian Wilson cycle?" Canadian Journal of Earth Sciences 51, no. 3 (March 2014): 187–96. http://dx.doi.org/10.1139/cjes-2013-0101.

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John Tuzo Wilson coined the term “plate” in plate tectonics. He is famous for inventing transform boundaries, hot spot tracks, and the Wilson cycle of ocean birth, growth, and decline. Less well remembered is his work in the 1950s on tectonic and radiometric age provinces of the Canadian Shield, as part of which he fathered U/Pb geochronology in Canada. This work gave strong support to the notion of continental growth through accretion of successively younger terranes onto an ancient cratonic core. The present paper reviews how paleomagnetism can trace the motions of continents to test Wilson’s ideas. Continental accretion often involves deep burial of one of the colliding elements through subduction or crustal underplating; such was the case with the Grenville orogen and its subprovinces in their Proterozoic accretion onto the Laurentian craton. The resulting heating and metamorphism erases most pre-collisional magnetic information but adds something new: the possibility of following the post-metamorphic uplift and cooling history, in time and space. The time element is provided by a new form of isotopic geochronology, thermochronometry, which provides dates for specific minerals together with the temperatures at which they became closed to isotopic migration. U/Pb dating of sphene is one method used; another is the 40Ar/39Ar variant of K/Ar dating applied to hornblende, micas, and feldspars, which have a wide range of Ar closure temperatures. The two specific Grenville studies described deal with parallel uplift histories determined by 40Ar/39Ar dating and by magnetics for the accreted terranes of the Central Metasedimentary Belt in Ontario and with the paleomagnetic detection of the post-1240 Ma closing of a small ocean between the Elsevir terrane and Laurentia during the Grenvillian orogeny.

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Speranza, Fabio, Stefano Branca, Mauro Coltelli, Francesca D'Ajello Caracciolo, and Luigi Vigliotti. "How accurate is “paleomagnetic dating”? New evidence from historical lavas from Mount Etna." Journal of Geophysical Research: Solid Earth 111, B12 (November 11, 2006): n/a. http://dx.doi.org/10.1029/2006jb004496.

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Kawasaki, K., and D. T. A. Symons. "Paleomagnetic dating of magmatic phases at the Cantung tungsten deposit, Northwest Territories, Canada." Canadian Journal of Earth Sciences 51, no. 1 (January 2014): 32–42. http://dx.doi.org/10.1139/cjes-2013-0119.

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The Cantung tungsten–copper (W–Cu) skarn orebodies are hosted by Proterozoic and Lower Cambrian metasedimentary rocks next to the Cretaceous “Mine Stock” monzogranite. Paleomagnetic analyses of 283 specimens from the Open Pit scheelite–chalcopyrite orebody (17 sites) and from adjacent host rocks including the aplite dikes (11 sites) isolated a stable characteristic remanent magnetization (ChRM), mostly by alternating field and then thermal step demagnetization. The step demagnetization results along with rock magnetic analyses of the W concentrate show that the main remanence carriers are single- or pseudosingle-domain pyrrhotite, titanomagnetite, and (or) magnetite. There is no statistically significant difference at 95% confidence between the site mean ChRM directions for the W–Cu ore, the host rock, or the aplite dikes populations. This result indicates that the intrusion of the Mine Stock is coeval with the genesis of the scheelite skarn ore and with dike emplacement to give an overall mean ChRM direction of declination 342.9°, inclination 82.0° (N = 22 sites, radius of cone of 95% confidence α95 = 4.2°, precision parameter k = 54.7) that defines a paleopole at 76.2°N latitude, 212.2°E longitude (radius of cone of 95% confidence A95 = 8.1°). This paleopole is concordant with the coeval 98 Ma North American paleopole at 92% confidence, which provides strong evidence that the eastern Selwyn Basin has been an autochthonous part of North America since the mid-Cretaceous.

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Douglas Elmore, R., Rika Burr, Michael Engel, and John Parnell. "Paleomagnetic dating of fracturing using breccia veins in Durness group carbonates, NW Scotland." Journal of Structural Geology 32, no. 12 (December 2010): 1933–42. http://dx.doi.org/10.1016/j.jsg.2010.05.011.

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Elmore, R. D., J. Parnell, M. Engel, S. Woods, M. Abraham, and M. Davidson. "Paleomagnetic dating of fluid-flow events in dolomitized Caledonian basement rocks, central Scotland." Journal of Geochemical Exploration 69-70 (June 2000): 369–72. http://dx.doi.org/10.1016/s0375-6742(00)00095-9.

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Wang, Hongqiang, Chenglong Deng, Rixiang Zhu, and Fei Xie. "Paleomagnetic dating of the Cenjiawan Paleolithic site in the Nihewan Basin, northern China." Science in China Series D 49, no. 3 (January 2006): 295–303. http://dx.doi.org/10.1007/s11430-006-0295-7.

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32

Minyuk, P. S., D. K. Pozhidaeva, and S. S. Burnatny. "Lake Chistoye (northern Priokhotsk area, Russia) the high resolution environmental archive for the Holocene." Limnology and Freshwater Biology, no. 4 (2022): 1503–5. http://dx.doi.org/10.31951/2658-3518-2022-a-4-1503.

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Abstract. Lake Chistoye in northeastern Russia provides one of the longest sequences of the Holocene sediments. Bottom surface and core sediments were analyzed using the complex method including rock magnetic, paleomagnetic, geochemical, mineralogical and radiocarbon dating. Two layers tephra with distinct individual petrophysical, geochemical and mineralogical characteristi were distinguished in the sediments. High-resolution secular variations of the geomagnetic field were constructed from the cores. According to radiocarbon dates, the lake was formed since the beginning of the Early Holocene. Synchronously, near the lake began an accumulation of marsh peats.

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33

D'Ajello Caracciolo, F., A. Pignatelli, F. Speranza, and A. Meloni. "A re-evaluation of the Italian historical geomagnetic catalogue: implications for paleomagnetic dating at active Italian volcanoes." Solid Earth Discussions 3, no. 1 (January 18, 2011): 19–42. http://dx.doi.org/10.5194/sed-3-19-2011.

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Abstract. Paleomagnetism is proving to represent one of the most powerful dating tools of volcanics emplaced in Italy during the last few centuries/millennia. This method requires that valuable proxies of the local geomagnetic field (paleo)secular variation ((P)SV) are available. To this end, we re-evaluate the whole Italian geomagnetic directional data set, consisting of 833 and 696 declination and inclination (respectively) measurements carried out since 1640 AD at several localities. All directions were relocated via virtual geomagnetic pole method to Stromboli (38.8° N, 15.2° E), rough centre of the active Italian volcanoes. For declination-only measurements, missing inclinations were derived (always by pole method) by French data (for period 1670–1789), and by nearby Italian sites/years (for periods 1640–1657 and 1790–1962). Using post-1805 declination values, we obtain a 0.46 ± 0.19 °/yr westward drift of the geomagnetic field for Italy. Original observation years were modified considering such drift value to derive a drift-corrected relocated data set. Both data sets were found to be in substantial agreement with directions derived from the field models by Jackson et al. (2000) and Pavon-Carrasco et al. (2009). However, the drift-corrected data set minimizes the differences between the Italian data and both field models, and eliminates a persistent 1.6° shift of 1933–1962 declination values from Castellaccio with respect to other nearly coeval Italian data. The relocated data sets were used to calculate two post-1640 Italian SV curves, with mean directions calculated every 30 and 10 years before and after 1790, respectively. Curve comparison suggests that the regional model by Pavon-Carrasco et al. (2009) yields the best available SV curve to perform paleomagnetic dating of 1600–1800 AD Italian volcanics, while the Italian drift-corrected curve is probably preferable for the XIX century. For the XX century, the global model by Jackson et al. (2000) yields more accurate inclination values, while the declinations from our drift-corrected curve seem to better represent the local field evolution, at least for the first half of the century.

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D'Ajello Caracciolo, F., A. Pignatelli, F. Speranza, and A. Meloni. "A re-evaluation of the Italian historical geomagnetic catalogue: implications for paleomagnetic dating at active Italian volcanoes." Solid Earth 2, no. 1 (June 9, 2011): 65–74. http://dx.doi.org/10.5194/se-2-65-2011.

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Abstract. Paleomagnetism is proving to represent one of the most powerful dating tools of volcanics emplaced in Italy during the last few centuries/millennia. This method requires that valuable proxies of the local geomagnetic field (paleo)secular variation ((P)SV) are available. To this end, we re-evaluate the whole Italian geomagnetic directional dataset, consisting of 833 and 696 declination and inclination measurements, respectively, carried out since 1640 AD at several localities. All directions were relocated via the virtual geomagnetic pole method to Stromboli (38.8° N, 15.2° E), the rough centre of the active Italian volcanoes. For declination-only measurements, missing inclinations were derived (always by pole method) by French data (for period 1670–1789), and by nearby Italian sites/years (for periods 1640–1657 and 1790–1962). Using post-1825 declination values, we obtain a 0.46 ± 0.19° yr−1 westward drift of the geomagnetic field for Italy. The original observation years were modified, considering such drift value, to derive at a drift-corrected relocated dataset. Both datasets were found to be in substantial agreement with directions derived from the field models by Jackson et al. (2000) and Pavon-Carrasco et al. (2009). However, the drift-corrected dataset minimizes the differences between the Italian data and both field models, and eliminates a persistent 1.6° shift of 1933–1962 declination values from Castellaccio with respect to other nearly coeval Italian data. The relocated datasets were used to calculate two post-1640 Italian SV curves, with mean directions calculated every 30 and 10 years before and after 1790, respectively. The curve comparison suggests that both available field models yield the best available SV curve to perform paleomagnetic dating of 1600–1800 AD Italian volcanics, while the Italian drift-corrected curve is probably preferable for the 19th century. For the 20th century, the global model by Jackson et al. (2000) yields more accurate inclination values, while the declinations from our drift-corrected curve seem to better represent the local field evolution, at least for the first half of the century.

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35

Liu, Chun-Ru, Gong-Ming Yin, Fang Fang, Pierre Voinchet, Cheng-Long Deng, Fei Han, Jian-Ping Li, Wei-Juan Song, Duo Wang, and Jean-Jacques Bahain. "ESR dating of the Donggutuo Palaeolithic site in the Nihewan Basin, northern China." Geochronometria 40, no. 4 (December 1, 2013): 348–54. http://dx.doi.org/10.2478/s13386-013-0127-4.

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Abstract The fluvio-lacustrine sequences in the Nihewan Basin, northern China, provide important terrestrial archives about Palaeolithic settlements and, therefore, about early human occupation in high northern latitude in East Asia. Here we present detailed ESR dating of the Donggutuo Palaeolithic site, located in this basin. Four levels A, B, C and E of the Donggutuo archaeological layer yield ESR ages ranging from 1060±129 ka to 1171±132 ka with a mean of 1119±132 ka. The ages are consistent with the paleomagnetic data, which show that the Donggutuo Palaeolithic site lies just below the onset of the Jaramillo normal subchron (0.99–1.07 Ma). Furthermore, our results indicate that the reliable ESR dating range of bleached quartz using Ti-Li centre can be effectively extended to 1100 ka and the Ti-Li centre was zeroed before the last deposition, which requires improvement of the understanding of the bleaching mechanism conditions.

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Conte, Gennaro, Jaime Urrutia-Fucugauchi, Avto Goguitchaichvili, and Alberto Incoronato. "Paleomagnetic Dating of Lava Flows of Uncertain Age, Somma-Vesuvius Volcanic Complex (Southern Italy)." International Geology Review 48, no. 4 (April 2006): 349–59. http://dx.doi.org/10.2747/0020-6814.48.4.349.

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37

Schmidt, P. W., and B. L. Dickson. "Paleomagnetic dating of ironstone nodules (‘nuts’) from the Yowah opal field, central southern Queensland." Australian Journal of Earth Sciences 64, no. 6 (August 18, 2017): 743–52. http://dx.doi.org/10.1080/08120099.2017.1355845.

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38

Speranza, Fabio, Patrizia Landi, Francesca D’Ajello Caracciolo, and Alessandro Pignatelli. "Paleomagnetic dating of the most recent silicic eruptive activity at Pantelleria (Strait of Sicily)." Bulletin of Volcanology 72, no. 7 (May 1, 2010): 847–58. http://dx.doi.org/10.1007/s00445-010-0368-5.

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39

Symons, David T. A., Michael T. Lewchuk, Kazuo Kawasaki, Francisco Velasco, and David L. Leach. "The Reocín zinc–lead deposit, Spain: paleomagnetic dating of a late Tertiary ore body." Mineralium Deposita 44, no. 8 (August 6, 2009): 867–80. http://dx.doi.org/10.1007/s00126-009-0253-3.

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40

Lauritzen, Stein-Erik, John Erik Haugen, Reidar Løvlie, and Helge Gilje-Nielsen. "Geochronological Potential of Isoleucine Epimerization in Calcite Speleothems." Quaternary Research 41, no. 1 (January 1994): 52–58. http://dx.doi.org/10.1006/qres.1994.1006.

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AbstractThe extent of isoleucine epimerization in a calcite speleothem was determined to evaluate the amino acid racemization method in abiotic calcite. A 5.5-cm-thick flowstone slab from Hamarnesgrotta, northern Norway, was analyzed for amino acid concentration, composition, and isoleucine epimerization at 26 levels through the sequence. U-series dates provide an independent chronologic control. Epimerization increases monotonically with stratigraphic depth and linearily with U-series age, independent of amino acid concentrations. The rate of epimerization is calibrated against the U-series dates, and extrapolation into lower strata beyond the U-series limit yields absolute age estimates that are consistent with paleomagnetic data from the same speleothem. The results suggest that, if adequately calibrated, amino acid dating is applicable to speleothem material reaching time spans beyond the range of conventional dating methods. Amino acids in the speleothem were probably derived from surface soils and are associated with brown humic stains in the calcite.

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41

Sagnotti, Leonardo, Francesca Budillon, Jaume Dinarès-Turell, Marina Iorio, and Patrizia Macrì. "Evidence for a variable paleomagnetic lock-in depth in the Holocene sequence from the Salerno Gulf (Italy): Implications for “high-resolution” paleomagnetic dating." Geochemistry, Geophysics, Geosystems 6, no. 11 (November 2005): n/a. http://dx.doi.org/10.1029/2005gc001043.

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42

Roza, Janine, Brandon Jackson, Eric Heaton, and Rob Negrini. "Paleomagnetic secular variation and environmental magnetism of Holocene-age sediments from Tulare Lake, CA." Quaternary Research 85, no. 3 (May 2016): 391–98. http://dx.doi.org/10.1016/j.yqres.2016.03.007.

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The lake-level record from Tulare Lake, CA has been shown to provide valuable constraints on late Pleistocene and Holocene runoff from the Sierra Nevada mountain range into the San Joaquin Valley of California, one of the world's most prolific agricultural centers. This project uses the magnetic properties of the Tulare Lake sediments in order to date the sediments and to constrain the relative lake level at the time of deposition. Shallowing lake conditions were identified leading up to a prominent unconformity; magnetic mineralogy and grain size indicators, primarily decreasing ARM/IRM and S-Ratio values suggest coarser grain sizes and more oxidizing conditions. Approximately half of the samples possessed well-behaved paleomagnetic directions suitable for paleomagnetic secular variation dating. The results indicate that the sediments below the unconformity were deposited approximately 7600–8500 cal yr BP, and the sediments above the unconformity were deposited approximately 2500–800 cal yr BP. The ages of the corresponding sediments are consistent with the time intervals during which previous studies indicate that lake level was above the elevation of this site, before and after a mid Holocene regression.

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43

SHI, Ruiping. "ISEA reversed event in the Cretaceous Normal Superchron (CNS): 40Ar/39Ar dating and paleomagnetic results." Chinese Science Bulletin 49, no. 9 (2004): 926. http://dx.doi.org/10.1360/03wd0613.

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44

Shao, Qingfeng, Wei Wang, Chenglong Deng, Pierre Voinchet, Min Lin, Antoine Zazzo, Eric Douville, Jean-Michel Dolo, Christophe Falguères, and Jean-Jacques Bahain. "ESR, U-series and paleomagnetic dating of Gigantopithecus fauna from Chuifeng Cave, Guangxi, southern China." Quaternary Research 82, no. 1 (July 2014): 270–80. http://dx.doi.org/10.1016/j.yqres.2014.04.009.

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AbstractSeveral Gigantopithecus faunas associated with taxonomically undetermined hominoid fossils and/or stone artifacts are known from southern China. These faunas are particularly important for the study of the evolution of humans and other mammals in Asia. However, the geochronology of the Gigantopithecus faunas remains uncertain. In order to solve this problem, a program of geochronological studies of Gigantopithecus faunas in Guangxi Province was recently initiated. Chuifeng Cave is the first studied site, which yielded 92 Gigantopithecus blacki teeth associated with numerous other mammalian fossils. We carried out combined ESR/U-series dating of fossil teeth and sediment paleomagnetic studies. Our ESR results suggest that the lower layers at this cave can be dated to 1.92 ± 0.14 Ma and the upper layers can be dated to older than 1.38 ± 0.17 Ma. Correlation of the recognized magnetozones to the geomagnetic polarity timescale was achieved by combining magnetostratigraphic, biostratigraphic and ESR data. The combined chronologies establish an Olduvai subchron (1.945–1.778 Ma) for the lowermost Chuifeng Cave sediments. We also analyzed the enamel δ13C values of the Gigantopithecus faunas. Our results show that southern China was dominated by C3 plants during the early Pleistocene and that the Gigantopithecus faunas lived in a woodland-forest ecosystem.

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Shi, Ruiping, Huaiyu He, Rixiang Zhu, and Yongxin Pan. "ISEA reversed event in the Cretaceous Normal Superchron (CNS):40Ar/39Ar dating and paleomagnetic results." Chinese Science Bulletin 49, no. 9 (May 2004): 926–30. http://dx.doi.org/10.1007/bf03184013.

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46

Zhisheng, An, and Ho Chuan Kun. "New Magnetostratigraphic Dates of LantianHomo erectus." Quaternary Research 32, no. 2 (September 1989): 213–21. http://dx.doi.org/10.1016/0033-5894(89)90077-x.

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AbstractSkeletal remains ofHomo erectusfound in Pleistocene loess at two sites near Lantian in central China are of greatly different geologic age. The cranium found in the fossil-bearing strata at Gongwangling is about 1.15 myr old whereas the remains found at the Chenjiawo locality in middle Pleistocene loess are about 0.65 myr old. The dating is based on new paleomagnetic polarity determinations and on the lithostratigraphic position of the fossils in the loess-paleosol sequence. Our results confirm that both localities are older than the first occupation of Zhoukoudian. New dates, palaeoenvironmental settings, and morphological features of the hominids from Lantian localities have significant bearing on the understanding of adaptive radiations of the middle and late hominids in Asia.

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47

Guzhikov, A. Yu, G. N. Aleksandrova, and E. Yu Baraboshkin. "New sedimentological, bio-magnetostratigraphic and palynologic data on the Upper Cretaceous of “Alan-Kyr” (Central Crimea)." Moscow University Bulletin. Series 4. Geology, no. 6 (December 28, 2019): 24–34. http://dx.doi.org/10.33623/0579-9406-2019-6-24-34.

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In this article there are the results of sedimentological, palynological and paleomagnetic studies of upper Cretaceous in Alan-Kyr section (Central Crimea). The nomenclature of rocks was specified, and their deep-water genesis was justified. According to palynologic data, the age of sediments is estimated as late Campanian, in the lower part of the section palynomorphs were not found. In the lower part of the section there was established a reverse polarity magnetozone — probable analogue of C33r magnetic chron, which base should be desirable to use as a primary attribute to determine the lower border of Campanian stage in the section according to Wolfring’s recommendation [Wolfgring et al., 2018]. The received data found a significant divergence microfaunistic dating of the section, conducted before [Bragina et al., 2016].

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Itoh, Yasuto, and Mahito Watanabe. "Fission-track dating and paleomagnetic polarity of the Lower Miocene in the Yatsuo area, central Japan." BULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN 56, no. 11-12 (2006): 425–29. http://dx.doi.org/10.9795/bullgsj.56.425.

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49

Kawasaki, K., D. T. A. Symons, and R. M. Coveney. "Preliminary paleomagnetic dating of the metalliferous (Zn–Pb rich), Stark black shale, Kansas City region, U.S.A." Journal of Geochemical Exploration 89, no. 1-3 (April 2006): 174–78. http://dx.doi.org/10.1016/j.gexplo.2005.11.086.

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50

Henry, B., M. E. M. Derder, M. Amenna, S. Maouche, B. Bayou, A. Ouabadi, H. Bouabdallah, M. Beddiaf, M. Ayache, and R. Bestandji. "Paleomagnetic dating of continental geological formations: Strong diachronism evidenced in the Saharan platform and geodynamical implications." Journal of African Earth Sciences 99 (November 2014): 353–62. http://dx.doi.org/10.1016/j.jafrearsci.2014.02.010.

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