1.Objective The Songliao Basin(SB)is situated on the eastern margin of Eurasia continent(Northeast Asia).During the Late Jurassic to Early Cretaceous,hundreds of rifting basins developed in this area,and the SB is a u...1.Objective The Songliao Basin(SB)is situated on the eastern margin of Eurasia continent(Northeast Asia).During the Late Jurassic to Early Cretaceous,hundreds of rifting basins developed in this area,and the SB is a unique case among them as it evolved into the largest rift basin.The rift basin filling of SB includes Huoshiling Formation,Shahezi Formation,and Yingcheng Formation in ascending order.The mega-rifting was controlled by the Mongol-Okhotsk Collisional Belt to the north and northwest and the Pacific Subduction Zone to the east(Wang PJ et al.,2016).As the first rifting succession,the Huoshiling Formation contains key information about the formation of the rifting basins and records the evolution of the Mongol-Okhotsk Collisional Belt and the Pacific Subduction Zone.However,the geological period of the Huoshiling Formation has not been well constrained for two main reasons.First,it is easily confused with the Yingcheng Formation,as both are dominated by volcanogenic-sedimentary successions.Second,there is lack of reliable dating samples from the uppermost part of the Huoshiling Formation due to its considerable burial depth.展开更多
The distribution of Eocene-Oligocene turbidite facies in the Pindos foreland and the paleocurrent directions of submarine fan deposits,of the Peloponnesus area,document the proximal part of an underfilled foreland bas...The distribution of Eocene-Oligocene turbidite facies in the Pindos foreland and the paleocurrent directions of submarine fan deposits,of the Peloponnesus area,document the proximal part of an underfilled foreland basin.The definition of Pindos foreland basin attributes sediment accommodation solely to flexural subsidence driven by topographic load of the thrust belt and sediment loads in the foreland basin.The restriction of the coarse grained deposits and the basin underfilled conditions are related to the Pindos foreland evolution,and especially to the internal thrusting and produced intrabasinal highs.The presence of strike-slip faults can affect the geometry of a basin by causing changes in depth and width,resulting in the transformation from a uniform to non-uniform configuration.This change has an intensive impact on depositional environments along the basin axis.Strike-slip faults that cross-cut intrabasinal highs produce pathways for the sediment distribution on both sides of the highs.Distributary channels that discharge into the basin are perpendicular to its axis and shift axially at the basin floor.The strikeslip and thrust faulting operated contemporaneously for much of their active periods,although it appears that thrust faulting,initiated slightly earlier than strike-slip faulting.展开更多
基金supported by the National Natural Science Foundation of China(42102135,42072140,42202122 and 41790453)Science and Technology Research Program of Chongqing Municipal Education Commission(KJZD-M202101502,KJQN202201549 and KJQN202101535)+1 种基金Natural Science Foundation of Chongqing(CSTB2022NSCQ-JQX0031 and CSTB2022NSCQMSX1586)China Scholarship Council(202208505055)。
文摘1.Objective The Songliao Basin(SB)is situated on the eastern margin of Eurasia continent(Northeast Asia).During the Late Jurassic to Early Cretaceous,hundreds of rifting basins developed in this area,and the SB is a unique case among them as it evolved into the largest rift basin.The rift basin filling of SB includes Huoshiling Formation,Shahezi Formation,and Yingcheng Formation in ascending order.The mega-rifting was controlled by the Mongol-Okhotsk Collisional Belt to the north and northwest and the Pacific Subduction Zone to the east(Wang PJ et al.,2016).As the first rifting succession,the Huoshiling Formation contains key information about the formation of the rifting basins and records the evolution of the Mongol-Okhotsk Collisional Belt and the Pacific Subduction Zone.However,the geological period of the Huoshiling Formation has not been well constrained for two main reasons.First,it is easily confused with the Yingcheng Formation,as both are dominated by volcanogenic-sedimentary successions.Second,there is lack of reliable dating samples from the uppermost part of the Huoshiling Formation due to its considerable burial depth.
文摘The distribution of Eocene-Oligocene turbidite facies in the Pindos foreland and the paleocurrent directions of submarine fan deposits,of the Peloponnesus area,document the proximal part of an underfilled foreland basin.The definition of Pindos foreland basin attributes sediment accommodation solely to flexural subsidence driven by topographic load of the thrust belt and sediment loads in the foreland basin.The restriction of the coarse grained deposits and the basin underfilled conditions are related to the Pindos foreland evolution,and especially to the internal thrusting and produced intrabasinal highs.The presence of strike-slip faults can affect the geometry of a basin by causing changes in depth and width,resulting in the transformation from a uniform to non-uniform configuration.This change has an intensive impact on depositional environments along the basin axis.Strike-slip faults that cross-cut intrabasinal highs produce pathways for the sediment distribution on both sides of the highs.Distributary channels that discharge into the basin are perpendicular to its axis and shift axially at the basin floor.The strikeslip and thrust faulting operated contemporaneously for much of their active periods,although it appears that thrust faulting,initiated slightly earlier than strike-slip faulting.
