Towards a more complete record of magmatism and exhumation in continental arcs, using detrital fission-track thermochrometry

Garver, John I.; Soloviev, A. V.; Bullen, Michael E.; Brandon, M. T.

doi:10.1016/s1464-1895(00)00086-7

Cited by 46 publications

(46 citation statements)

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“…Because this young age is strictly a limiting age, it has been referred to as a FT minimum age in the literature because the calculated age is the minimum FT component in the grain-age distribution (i.e. Garver et al 2000b). age regardless of depositional age of the sandstone, and as such they are referred to as static peaks (Fig.…”

Section: Dating Stratamentioning

confidence: 99%

“…For example, if a young population of euhedral ZFT ages is close or identical to the depositional age, then they are likely derived from a volcanic source ( Fig. 9A; see Kowallis et al 1986;Garver and Brandon 1994b;Garver et al 2000b;Soloviev et al 2002;Stewart and Brandon 2004). Otherwise, young age peaks in sediment derived from convergent mountain belts without active volcanism reflect rapid exhumation of deepseated metamorphic rocks in the core of the orogen ( Fig.…”

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confidence: 99%

“…per sample that are then etched for different lengths of time (see Naeser et al 1987;Garver et al 2000b;Bernet et al 2004b), but in cases where the grain-age distribution is very large (i.e. grain ages span 1000 m.y.)…”

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confidence: 99%

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Fission-track Analysis of Detrital Zircon

Bernet

2005

Reviews in Mineralogy and Geochemistry

177

144

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INTRODUCTIONZircon has become one of the most important minerals for studying sediment provenance and the exhumation history of orogenic belts. The reason for this utility is that zircon is common in many igneous, metamorphic, and sedimentary rocks, it is resistant to weathering and abrasion, and it can be dated with various isotopic methods having reasonable high concentrations of uranium and thorium (Fig. 1). Techniques used to date detrital zircon include U/Pb and (U-Th)/He dating, but in this chapter we focus exclusively on fission-track (FT) analysis.FT analysis allows age determination of single zircon grains that may have cooling ages between several hundred thousand to a billion years or more. The datable range depends on individual uranium content and cooling history of a zircon grain. Fission tracks in zircon have an effective annealing temperature of ~240° C +/-30° C in natural systems (Hurford 1986;Brandon et al. 1998;Bernet et al. 2002). Therefore most detrital zircon are fairly resistant to thermal annealing in typical sedimentary basins after deposition, while the other low-temperature thermochronometers anneal at lower temperatures common in sedimentary basins (i.e. Helium dating and apatite FT) and therefore more readily have compromised provenance information (Fig. 2).Consequently, the strength of detrital zircon fission-track (DZFT) analysis lies in the fact that this method provides robust cooling ages of source terrains. The ability of zircon to retain information about the most recent thermal history of a source area is invaluable in elucidating the processes and system response in a range of geodynamic settings, especially the evolution of orogenic belts. This characteristic makes DZFT dating 2 superior to U/Pb dating when the objective is to link sedimentation to the uplift and exhumation history of the source terrain. U/Pb dating of single crystals provides crystallization ages (or zircon growth during metamorphism), which typically pre-date the latest orogenic cycle. This long-term memory is partly due to the fact that zircon is so robust that recycling is common and it is typical for zircons to be polycyclic, even in crustal melts. As such, a U/Pb age on a detrital zircon may have little bearing on the nature of the immediate source rock, but may be ideal for understanding the long-term record of crustal formation. In addition, U/Pb ages of detrital zircon rarely allow the determination of exhumation rates and because of the possibility of multiple recycling of zircon grains their U/Pb ages can only vaguely be assigned to non-distinct source regions. Therefore, FT ages tend to be directly related to actively evolving source terrains.Consequently, as we explain below, DZFT analysis is a method ideally suited for: a) tracing the provenance of clastic sediments; b) determining stratigraphic ages in volcanically active areas; c) studying the long-term exhumation history of convergent mountain belts with little active volcanism, and d) dating low-temperature thermal events. Some interesting...

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Section: Dating Stratamentioning

confidence: 99%

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confidence: 99%

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Fission-track Analysis of Detrital Zircon

Bernet

2005

Reviews in Mineralogy and Geochemistry

177

144

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“…1B), which is not now seismically active. The western edge of the basin comprises both an extinct subduction zone (Seliverstov, 1998) and the eastern boundary of the Olyutorskii terrane (Garver et al, 2000); this boundary is seismically active (Cook et al, 1986;Mackey et al, 2004).…”

Section: Introduction and Settingmentioning

confidence: 99%

Does Kamchatka belong to North America? An extruding Okhotsk block suggested by coastal neotectonics of the Ozernoi Peninsula, Kamchatka, Russia

Pedoja¹,

Bourgeois²,

Pinegina³

et al. 2006

Geol

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This paper addresses one part of an outstanding tectonic problem regarding the nature of the plate boundary between Eurasia and North America in northeastern Russia. In this region, the northwestern corner of the Pacific plate interacts either simply with the North American plate, or more complexly with one or more blocks independent of North America. North of this corner, evidence of uplift, tilting, and convergence contradicts the prevailing, simpler model. On the Ozernoi Peninsula, ϳ150 km north of the subducting Pacific plate, marine terraces indicate uplift rates of 0.1 to 0.3 mm/yr, with faster rates to the east. Historic and paleoseismic records provide evidence for recurring tsunamigenic, thrust earthquakes offshore of the Ozernoi Peninsula, the most recent a Mw 7.7 earthquake in 1969. A multiplate model where an eastward-moving Okhotsk block, including most of Kamchatka, is converging with a clockwise-rotating Bering block better explains these observations than does the unbroken North American plate model.

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“…MaastrichtianPaleocene island arc sedimentary, volcanic and plutonic units (Astrahantzev et al, 1987;Kazimirov, 1985;Bogdanov and Fedorchuk, 1987;Krylov et al, 1989;Garver et al, 2000;Soloviev et al, 2002). In the central and southern Kamchatka Peninsula, corresponding terranes have been described in the Sredinny, Valaginsky, Tumrok and Kumroch mountain ranges (Shapiro, 1976(Shapiro, , 1995Shapiro et al, 1984;Sokolov et al, 1988;Grigoriev et al, 1990;).…”

Section: Northern Regionmentioning

confidence: 99%

Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area

Harbert

Tsukanov

Алексеев

et al. 2009

Stephan Mueller Spec. Publ. Ser.

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Abstract. The Kamchatka Peninsula of northeastern Russia is located along the northwestern margin of the Bering Sea and consists of zones of complexly deformed accreted terranes. Paleomagnetic samples were collected for study from a Late Cretaceous aged locality at Cape Kronotskiy (λ=54 • 44.8 N, φ=162 • 1.29 E). Two components of magnetization were observed. During stepwise thermal demagnetization, the B-magnetic component was observed up to 600 • C having a direction and associated uncertainty in stratigraphic coordinates of D s =300.7 • , I s =48.7 • , α 95 =10.9 • , kvalue=11.8, n=17. The B component paleolatitude calculated from the Fisher mean in stratigraphic coordinates and associated statistics are λ obs =30.4 • N or S, λ 95 =8.9 • , n=17 (sites), k-value=11. Our overall study paleolatitude result is similar to a previously reported paleomagnetic study completed within this unit. Terrane trajectories calculated using the finite rotation poles of Engebretson et al. (1985), which are corrected for either Pacific-hotspot drift or True Polar Wander hotspot-spin axis relative motion, show that the sampled unit represents a far traveled tectonostratigraphic terrane and support a model in which accretion (docking) events of this composite or superterrane with the North America plate occur at approximately 40 Ma.

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Towards a more complete record of magmatism and exhumation in continental arcs, using detrital fission-track thermochrometry

Cited by 46 publications

References 13 publications

Fission-track Analysis of Detrital Zircon

Fission-track Analysis of Detrital Zircon

Does Kamchatka belong to North America? An extruding Okhotsk block suggested by coastal neotectonics of the Ozernoi Peninsula, Kamchatka, Russia

Paleomagnetism of the Cretaceous rocks from Cape Kronotskiy, East Kamchatka and reconstruction of terrane trajectories in the NE Pacific area

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