DOI: 10.1306/08181008061
Scopus记录号: 2-s2.0-79955612091
论文题名: Structural and depositional evolution of the East Balkan thrust belt, Bulgaria
作者: Stuart C.J. ; Nemcok M. ; Vangelov D. ; Higgins E.R. ; Welker C. ; Meaux D.P.
刊名: AAPG Bulletin
ISSN: 0149-1871
EISSN: 1558-9601
出版年: 2011
发表日期: 2011
卷: 95, 期: 4 起始页码: 649
结束页码: 673
语种: 英语
Scopus关键词: Black sea
; Bulgaria
; Continental crusts
; Cross section
; Expanding systems
; Fold structures
; Foreland basin
; Gravitational collapse
; Holocenes
; Late Eocene
; Lithofacies
; Local source
; Neo genes
; Oceanic crust
; Offshore wells
; Oligocene
; Paleocene
; Seismic profiles
; Thrust belts
; Anoxic sediments
; Earthquake resistance
; Mammals
; Offshore oil wells
; Sediment transport
; Soil mechanics
; Stratigraphy
; Sedimentology
; age determination
; continental crust
; crustal thinning
; depositional environment
; erosion rate
; foreland basin
; Holocene
; oceanic crust
; orogeny
; outcrop
; Paleocene
; piggyback basin
; regional geology
; sediment transport
; subsidence
; syncline
; thrust
; uplift
; Black Sea
; Bulgaria
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Analysis of structural and sedimentologic data from onshore outcrops, offshore wells, and offshore seismic profiles indicates that the thrust belt geometry in eastern Bulgaria from the Paleocene to the Holocene is characterized by a southeastward plunge toward the western Black Sea Basin. This plunge was caused by (1) a combination of eastward-thinning continental crust in the west and oceanic crust in the east; (2) a postrift thermal subsidence of the continental crust; (3) buttressing and no buttressing of the Moesian platform against the thrust belt in its western and eastern parts, respectively; and (4) northeastward thrust belt advance. These factors controlled the overall eastward-diminishing uplift of the thrust belt and associated eastward sediment funneling into the Black Sea. Evidence for the eastward-fading uplift and buttressing includes the (1) eastward decreasing amount of shortening along constructed cross sections, yielding 30,10.5,11, and 4 km (18.6, 6.5, 6.8, and 2.5 mi, respectively) from west to east, respectively; (2) eastward trend of more complete stratigraphie sections and shallower erosional levels; and (3) eastward increase in decollement depths, being 3.7, 3.8, 9.5 to 13.5, and 12.3 to 14.1 km (2.3, 2.4, 5.9-8.4, and 7.6-8.8 mi). The age of the last thrusting is progressively younger toward the east from the middle Eocene through the late Eocene to the Oligocene from west to east, respectively. Onshore parts of the thrust belt, which were significantly affected by buttressing against the Moesian platform, exhibit thrusting followed by late Eocene gravitational collapse, Oligocene quiescence, and Neogene extension. The thrust belt part farther east exhibits thrusting followed by Oligocene-Neogene extension. A Paleocene-middle Eocene piggyback basin formed in the onshore part of the thrust belt, centered in the East Balkan zone, with a southeastward- plunging axis, which migrated northeastward with basin shortening and filling. The development of the East Balkan thrust belt and its later extensional modification had a dominant control over sediment transport, lithofacies, and depositional patterns. Developing thrust belt fold structures, together with the orogenic hinterland and highs in the foreland, formed a northeastward and eastward expanding system of sediment input. Southeastward-plunging axes of the foreland basin and the Paleocene-middle Eocene piggyback basin were the principal sediment transport pathways, together with subordinate internal synclinal axes. These depressions funneled sediments toward and into the western Black Sea Basin. As orogenesis advanced to the northeast, former depositional areas were uplifted and eroded, providing local sources of sediment. Copyright ©2011. The American Association of Petroleum Geologists. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955612091&doi=10.1306%2f08181008061&partnerID=40&md5=e2fcf65170893642343889fc0ecada59
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13440
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Stuart C.J.,Nemcok M.,Vangelov D.,et al. Structural and depositional evolution of the East Balkan thrust belt, Bulgaria[J]. AAPG Bulletin,2011-01-01,95(4)