scholarly journals New age constraints on the Miocene tectonic evolution of southwestern Japan: fission track ages from the Shitara district, Aichi Prefecture

2006 ◽  
Vol 112 (2) ◽  
pp. 153-165 ◽  
Author(s):  
Hiroyuki Hoshi ◽  
Tohru Danhara ◽  
Hideki Iwano
Keyword(s):  
Tectonic Evolution ◽  
Fission Track ◽  
New Age ◽  
Aichi Prefecture ◽  
Fission Track Ages ◽  
Age Constraints

Fission-Track Ages of Tuff Layers Related to the Pliocene-Pleistocene Boundary on the Boso Peninsula, Japan

1990 ◽  
Vol 33 (1) ◽  
pp. 86-93 ◽  
Author(s):  
Masao Kasuya
Keyword(s):  
Fission Track ◽  
Middle Part ◽  
Late Cenozoic ◽  
Boso Peninsula ◽  
Normal Polarity ◽  
Fission Track Ages ◽  
Age Constraints

AbstractFission-track ages of zircon crystals from four tuff layers in the late Cenozoic sediment sequence of the Boso Peninsula,.Japan, are 1.6 ± 0.2 myr (the Kurotaki Formation), 5.5 ± 0.6 and 5.2 ± 0.5 myr (the uppermost part of the Amatsu Formation), and 11.5 ± 0.8 myr (the middle part of the Amatsu Formation). These ages provide numerical age constraints on magneto-biostratigraphy. The normal polarity interval in the lower part of the Kiwada Formation corresponds to the Olduvai polarity subzone. The boundary between the Pliocene and Pleistocene lies slightly above the Olduvai polarity subzone.

scholarly journals CENOZOIC TECTONIC EVOLUTION OF THE EASTERN ALPS – A RECONSTRUCTION BASED ON 40AR/39AR WHITE MICA, ZIRCON AND APATITE FISSION TRACK, AND APATITE (U/Th)-He THERMOCHRONOLOGY

2017 ◽  
Vol 43 (1) ◽  
pp. 299
Author(s):  
W. Kurz ◽  
A. Wölfler ◽  
R. Handler
Keyword(s):  
Tectonic Evolution ◽  
Fission Track ◽  
Eastern Alps ◽  
White Mica ◽  
Fault Zones ◽  
Apatite Fission Track ◽  
Major Fault ◽  
Fission Track Ages ◽  
Fault Gouges ◽  
Host Rocks

The Cenozoic tectonic evolution of the Eastern Alps is defined by nappe assembly within the Penninic and Subpenninic units and their subsequent exhumation. The units above, however, are affected by extension and related faulting. By applying distinct thermochronological methods with closure temperatures ranging from ~450° to ~40°C we reveal the thermochronological evolution of the eastern part of the Eastern Alps. 40Ar/39Ar dating on white mica, zircon and apatite fission track, and apatite U/Th-He thermochronology were carried out within distinct tectonic units (Penninic vs. Austroalpine) and on host rocks and fault- related rocks (cataclasites and fault gouges) along major fault zones. We use particularly the ability of fission tracks to record the thermal history as a measure of heat transfer in fault zones, causing measurable changes of fission track ages and track lengths. Additionally, these studies will provide a general cooling and exhumation history of fault zones and adjacentcrustal blocks.

scholarly journals Cretaceous—Quaternary tectonic evolution of the Tatra Mts (Western Carpathians): constraints from structural, sedimentary, geomorphological, and fission track data

2014 ◽  
Vol 65 (4) ◽  
pp. 307-326 ◽  
Author(s):  
Silvia Králiková ◽  
Rastislav Vojtko ◽  
Ubomír Sliva ◽  
Jozef Minár ◽  
Bernhard Fügenschuh ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Elevated Temperatures ◽  
Fission Track ◽  
Crystalline Basement ◽  
Western Carpathians ◽  
Tectonic Activity ◽  
Zircon Fission Track ◽  
Tatra Mts ◽  
Fission Track Ages ◽  
Central Western Carpathians

Abstract The Tatra Mts area, located in the northernmost part of Central Western Carpathians on the border between Slovakia and Poland, underwent a complex Alpine tectonic evolution. This study integrates structural, sedimentary, and geomorphological data combined with fission track data from the Variscan granite rocks to discuss the Cretaceous to Quaternary tectonic and landscape evolution of the Tatra Mts. The presented data can be correlated with five principal tectonic stages (TS), including neotectonics. TS-1 (~95-80 Ma) is related to mid-Cretaceous nappe stacking when the Tatric Unit was overlain by Mesozoic sequences of the Fatric and Hronic Nappes. After nappe stacking the Tatric crystalline basement was exhumed (and cooled) in response to the Late Cretaceous/Paleogene orogenic collapse followed by orogen-parallel extension. This is supported by 70 to 60 Ma old zircon fission track ages. Extensional tectonics were replaced by transpression to transtension during the Late Paleocene to Eocene (TS-2; ~80-45 Ma). TS-3 (~45-20 Ma) is documented by thick Oligocene-lowermost Miocene sediments of the Central Carpathian Paleogene Basin which kept the underlying Tatric crystalline basement at elevated temperatures (ca. > 120 °C and < 200 °C). The TS-4 (~20-7 Ma) is linked to slow Miocene exhumation rate of the Tatric crystalline basement, as it is indicated by apatite fission track data of 9-12 Ma. The final shaping of the Tatra Mts has been linked to accelerated tectonic activity since the Pliocene (TS-5; ~7-0 Ma).

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