Controls and evolution of fan delta systems in the Miocene Pohang Basin, SE Korea

Hwang, Inah; Chough, Sung Kwun; Hong, Sun In; Choe, Moon Young

doi:10.1016/0037-0738(95)00031-3

Cited by 81 publications

(67 citation statements)

References 27 publications

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“…Subaqueous sandy grain flow (Hwang et al, 1995;Kim et al, 1995) Massive (gravelly) red sandstone (Sm): Brick-red to yellow, massive, poorly sorted, laterally extending tens of meters. Locally comprises gravels trains and thin lenses.…”

Section: Bozdoğan Grabenmentioning

confidence: 99%

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Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Ocakoğlu¹,

Açıkalın²,

Özsayın³

et al. 2014

Turkish J Earth Sci

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IntroductionThe E-W-running Büyük Menderes and Gediz grabens, with their prominent morphologies, have attracted the attention of many researchers in the study of the Late Oligocene to Recent extension of West Anatolia. Being symmetric to each other, both zones in the Central Menderes Massif represent narrow intracontinental deformation belts with complex structural history and display multiple basin developments (Figure 1). The Büyük Menderes Graben (BMG) is limited by a regional detachment in the north. The basin is surrounded by the E-W-running Küçük Menderes Graben in the north and by the Muğla-Yatağan Basin and Kale-Tavas Molas Basin in the far south. Four Mio-Pliocene depressions (from west to east, the Çine, Bozdoğan, Karacasu, and Denizli basins) having overall N-S trends are situated just south of the BMG (Figure 1).Modes of development of variously oriented grabens in this region have received little attention. Although there is a hypothesis called the supradetachment transtensional mechanism (Yılmaz et al., 2000;Çemen et al., 2006;Çiftçi et al., 2011;Gessner et al., 2013), it is not substantiated by considerable structural or depositional field data from N-S running grabens. The previous studies in the BMG and in the vicinity of the BMG revealed a complicated and sometimes conflicting Neogene deformation history. For instance, formation of the Söke Basin in the west tip during the Early to Late Miocene was explained in terms of N-S extension (either detachment or high-angle faultrelated) (Sümer et al., 2013). On the other hand, both N-S compression- (Gürer et al., 2009) and N-S extension-related sedimentary basins (Emre and Sözbilir, 1987;Cohen et al., 1995;Bozkurt, 2000) were reported in the central part of the BMG in the Middle and Late Miocene. Further east in the Denizli Basin, the extension direction turns to NNW (or NE and NW) (Kaymakçı, 2005;Koçyiğit, 2005). This brief account suggests that further multidisciplinary detailed studies are still required in unexplored areas in order to reconcile or negate the existing conflicting views and provide more detailed structural history in the BMG and its vicinity.In this study we focused on the stratigraphic, sedimentological, and structural characteristics of the Karacasu and Bozdoğan (K&B) basins just south of the Abstract: The Karacasu and Bozdoğan basins, which trend obliquely to modern grabens in the Central Menderes Massif, are investigated in terms of morphology, basinfill architecture, and structure. Evaluation of the previous geophysical and new structural data indicates that the basins are symmetrical grabens mostly running in a N-S direction. Analysis of sedimentary facies of the basins' infill supports the simple graben model by revealing lateral alluvial/colluvial fans in basin margins and axial fluvial/lacustrine environments in a central trough. The long-term changes between fluvial and lacustrine conditions in the basins are attributed to paleoclimatic origin. Paleostress analysis of slickensides substantiates that the basins were deformed...

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Section: Bozdoğan Grabenmentioning

confidence: 99%

“…Subaqueous grain flows (Hwang and Chough, 1990;Hwang et al, 1995) Massive gray (gravelly) sandstone (Sms): Massive, rarely parallel-bedded, nonerosional based gray-green sandstone with gravel trains and lenses. Thickness of beds is about 1 m, rarely exceeding 2 m. Grain size considerably decreases to fine sand within 50 m downslope.…”

Section: Bozdoğan Grabenmentioning

confidence: 99%

Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Ocakoğlu¹,

Açıkalın²,

Özsayın³

et al. 2014

Turkish J Earth Sci

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“…Colella, 1988;Dorsey, Umhoefer & Renne, 1995;Ethridge & Wescott, 1984;Gawthorpe & Colella, 1990;Hwang, Chough, Hong & Choe, 1995;Kleinspehn, Steel, Johansen & Netland, 1984;Leeder, Ord & Collier, 1988;McPherson, Shanmugan & Moiola, 1987;Nemec, 1990;Postma, 1990; Rohais, Eschard & Guillocheau, 2008;Sohn & Son, 2004;Soh, Tanaka & Taira, 1995;Tanaka & Maejima, 1995;Ulicny, 2001;Wescott & Ethridge, 1990;Wood & Ethridge, 1988;Young, Gawthorpe & Sharp, 2000). However, the fan-deltaic succession of the Fevzipaşa Formation generally has much steeper slopes with much shorter delta top to basin distances.…”

Section: Discussionmentioning

confidence: 99%

Tectono-sedimentary evolution of an Early Pleistocene shallow marine fan-deltaic succession at the western coast of Turkey

Sümer¹,

İncı²,

Sözbi̇li̇r³

2012

Geodinamica Acta

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The Quaternary period on the western coast of Turkey is studied using sedimentological features and geochronological age data of the Söke-Milet Basin (SMB), which is a subsidiary to the Büyük Menderes Graben (BMG). Here, for the first time, we geochronologically document the Early Pleistocene shallow marine fan-deltaic succession in the Fevzipaşa Formation (basin-fill unit of the SMB), 15 km inland of the current Aegean coast and 150 m above current sea level. The formation outcrops at the western end of the BMG. It comprises an alluvial fan to freshwater carbonate, shallow marine fan-deltaic and alluvial fan depositional packages separated by intrabasinal unconformities. Based on conventional sedimentary data, seven different facies associations (FA) have been distinguished in the Fevzipaşa Formation: (FA 1) hyperconcentrated flow-generated lower alluvial fan deposits, (FA 2) freshwater lacustrine carbonate deposits, (FA 3) prodelta deposits, (FA 4) shallow marine fan-delta slope deposits, (FA 5) nearshore sandy mouth-bar-type fandelta front deposits, (FA 6) alluvial fan-delta top deposits and (FA 7) hyperconcentrated flow-generated upper alluvial fan deposits. The shallow marine facies above the lower alluvial fan deposits, considered in conjunction with stratigraphical observations and geochronological and paleontological age data, suggest that a late Early Pleistocene transgression affected the Aegean region.

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“…The dom inant tab u lar ge om e try is com monly re ferred to sheet floods (Benvenuti, 2003). Ac cu mu la tion of poorly sorted, dis or ganized con glom er ates is pos si ble by aggradation on lon gi tu di nal bars dur ing floods (Hwang et al, 1995). Also, mas sive to crudely strat i fied gravel deposits are as cribed to de po si tion in braided streams by mi gra tion of lon gi tu di nal bars (Chwang and Chough, 1990).…”

Section: Palaeoenvironmentmentioning

confidence: 99%

Foreland provenance of thick conglomerates in the early stage of the Carpathian Foredeep development: the case of the Sloboda Conglomerate (Lower Miocene), western Ukraine

Oszczypko

Uchman

Bubniak

2012

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The up per part of the Lower Mio cene Sloboda Con glom er ate, a 250-1400 m thick unit, was de pos ited mainly on an al lu vial fan and fan delta dur ing the early stages of Carpathian Foredeep de vel op ment. Dur ing of the Old Styrian overthrust move ments of the Carpathian orogen, a forebulge was formed, which sup plied clasts to the con glom er ate. The clasts are dom i nated by Late Pro tero zoic-Early Cambrian phyllites, while Pa leo zoic car bon ates are com mon, and Me so zoic and other rocks are rare. The source area formed mainly by a prolon ga tion of the Małopolska Mas sif that was in volved in the forebulge; this was lo cated close to a palaeovalley cut into Me so zoic and Pa leo zoic rocks, bur ied un der youn ger strata. Ad di tional ma te rial was de rived from the ad vanc ing front of the Carpathian Flysch nappes. Nestor Oszczypko and Al fred Uchman, In sti tute of Geo log i cal Sci ences, Jagiellonian Uni ver sity,

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Controls and evolution of fan delta systems in the Miocene Pohang Basin, SE Korea

Cited by 81 publications

References 27 publications

Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Tectonosedimentary evolution of the Karacasu and Bozdoğan basins in the Central Menderes Massif, W Anatolia

Tectono-sedimentary evolution of an Early Pleistocene shallow marine fan-deltaic succession at the western coast of Turkey

Foreland provenance of thick conglomerates in the early stage of the Carpathian Foredeep development: the case of the Sloboda Conglomerate (Lower Miocene), western Ukraine

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