Foreland Basins at the Miocene Arc-Arc Junction, Central Hokkaido, Northern Japan

Kawakami, Gentaro

doi:10.5772/56748

Cited by 4 publications

(4 citation statements)

References 24 publications

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“…The most conspicuous feature evidencing the control of tectonic processes on sedimentary evolution in wedge‐top depozones is the presence of frequent unconformities, usually diachronic, triggered by reactivation events of the emerging reliefs in the orogen front (Beaumont, 1981; Chen & He, 2022; Cosovic et al., 2018; DeCelles & Giles, 1996; Kawakami, 2013; Mutti et al., 2003; Ori & Friend, 1984; Sinclair, 1997). In the central Betic Cordillera, during the late Tortonian, the tectonic regime was that of a nearly N‐S compression due to the Eurasian‐African convergence (Galindo‐Zaldívar et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…This unconformity is linked to generalized uplift of the central Betic Cordillera leading to the emersion of most of the basins, such as the Granada and the Guadix-Baza basins. Related to this general uplift, the Guadalhorce Strait was definitively closed Martín et al, 2001;Pérez-Asensio et al, 2012, 2013Reolid et al, 2022) (Figure 15).…”

Section: Sedimentation-tectonics Interplaymentioning

confidence: 98%

“…At the southern active margin of the Guadalquivir foreland basin, the Olistostromic Unit embraces a tectonically complex chaotic pile of sediments dominated by soft and unconsolidated Triassic clays, sands, carbonates and gypsum, which include Cretaceous to Lower-Middle Miocene (Burdigalian-Langhian) materials from the External Zones (Roldán, 1995(Roldán, , 2009 (Figure 1a,f). The mechanisms involved in the emplacement and the age of the emplacement of the Olistostromic Unit (tectonics, diapiric domes, gravitational mass displacements), its surficial extension, as well as its internal organization are still debated (Berástegui et al, 1998;Flinch et al, 1996;Martínez del Olmo, 2019;Pérez-López & Sanz de Galdeano, 1994;Pérez-Valera et al, 2017;Rodríguez-Fernández et al, 2012, 2013Roldán, 1995).…”

Section: Settingmentioning

confidence: 99%

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Tectonic control on the palaeogeographic evolution of thrust‐top basins at the active margin of the Guadalquivir Basin (central Betic Cordillera, S Spain)

Aguirre,

Braga,

Martín

et al. 2024

Basin Research

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The Guadalquivir Basin is the foreland basin of the Betic Cordillera (S Spain). Closest to the orogen, several thrust‐top basins evolved during the Late Miocene in the central part of the cordillera. Here, we study the Upper Miocene deposits in five of these satellite basins: Montefrío, Iznájar‐Cuevas de San Marcos, Antequera, Bobadilla Estación and Teba, in order to (1) update the stratigraphic framework, (2) infer a depositional model, (3) establish the relationship between sedimentary record and tectonic context and (4) reconstruct the palaeogeography of the area during the Late Miocene. Upper Miocene sediments mostly consist of mixed carbonate‐terrigenous deposits. Facies characterization allows inferring a sedimentary model corresponding to a ramp with foreshore deposits changing to a shoal belt offshore in the inner ramp. Swaley and hummocky cross‐stratified deposits formed in the transition to the middle ramp, and plane parallel carbonate beds in the distal middle‐outer ramp. Factory facies, dominated by rhodoliths and bryozoans, also occur in the middle‐outer ramp environments. Silts and marls formed in the deepest outer ramp and basin settings respectively. Breccias accumulated at the toe of palaeocliffs and conglomerates and massive coarse sands were deposited in fluvio‐deltaic systems. Conglomerates and sands were also reworked as gravity flows and redeposited offshore. Local facies include rudstones‐grainstones displaying large‐scale trough‐cross bedding formed in a strait in Montefrío, and marls with chalky carbonates deposited in a shallow marine, sheltered lagoon with hydromorphic soils in Bobadilla Estación. The study basins evolved in an N‐S compressive tectonic context responsible of the emersion of the main Betic reliefs. Concomitantly, E‐W and ESE‐WNW extension originated the main depocentres. The influence of the tectonic activity on the sedimentary infills is indicated by the presence of synsedimentary deformations and several diachronic unconformities, which are younger westward. Tectonism, in turn, also controlled the palaeogeographic evolution during the late Tortonian‐early Messinian interval.

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Section: Discussionmentioning

confidence: 99%

Section: Sedimentation-tectonics Interplaymentioning

confidence: 98%

Section: Settingmentioning

confidence: 99%

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Tectonic control on the palaeogeographic evolution of thrust‐top basins at the active margin of the Guadalquivir Basin (central Betic Cordillera, S Spain)

Aguirre,

Braga,

Martín

et al. 2024

Basin Research

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“…1a). The tectonic evolution of Hokkaido has been dominated by a series of accretions and the right-lateral oblique collision between the Kuril arc and the NE Japan arc, which have formed a west-vergent fold-thrust belt called the Hidaka collision zone and a series of nearly north-south trending geological units in central Hokkaido 6,7 (Fig. 1b).…”

Section: Introductionmentioning

confidence: 99%

Arc-arc collision caused the 2018 Eastern Iburi earthquake (M 6.7) in Hokkaido, Japan

Hua

Zhao

et al. 2019

Sci Rep

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Inland crustal earthquakes usually occur in the brittle upper crust (0–20 km depths), but the 6 September 2018 Eastern Iburi earthquake (M 6.7) took place in southern Hokkaido with a focal depth of ~37 km, causing 41 fatalities and serious damage to the local infrastructure. The reason why this event was so deep and its causal mechanism are still unclear. In this work we study the three-dimensional P and S wave seismic attenuation (1/Q) structure in the source zone of the 2018 Iburi earthquake. Our results show that this event occurred at the boundary between the Sorachi-Yezo belt (low Q) and the dipping Northeastern (NE) Japan arc (high Q) that is descending beneath the Kuril arc. The collision between the NE Japan and Kuril arcs as well as fluids from dehydration of the subducting Pacific plate caused this big event and its unusual focal depth. Similar attenuation structures are revealed in source zones of the 1970 Hidaka earthquake (M 6.7) and the 1982 Urakawa-oki earthquake (M 7.1), suggesting that they were caused by similar processes. We think that large earthquakes will take place again on the active thrust faults in southern Hokkaido in the coming decades. Hence, we should pay much attention to the seismic risk and prepare for reduction of earthquake hazards there.

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High abundances of degraded triterpenoids in Miocene turbiditic sediments of south-central Hokkaido, Japan

Asahi,

Sawada

2024

Organic Geochemistry

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Foreland Basins at the Miocene Arc-Arc Junction, Central Hokkaido, Northern Japan

Cited by 4 publications

References 24 publications

Tectonic control on the palaeogeographic evolution of thrust‐top basins at the active margin of the Guadalquivir Basin (central Betic Cordillera, S Spain)

Tectonic control on the palaeogeographic evolution of thrust‐top basins at the active margin of the Guadalquivir Basin (central Betic Cordillera, S Spain)

Arc-arc collision caused the 2018 Eastern Iburi earthquake (M 6.7) in Hokkaido, Japan

High abundances of degraded triterpenoids in Miocene turbiditic sediments of south-central Hokkaido, Japan

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