Results 81 to 90 of about 1,759,077 (177)

Sedimentary–Tectonic Evolution and Paleogeographic Characteristics of the Paleozoic in the Ordos Basin

Journal of Marine Science and Engineering
As a tectonically stable and extensively superimposed basin situated in the North China Craton, the Ordos Basin hosts abundant reserves of oil, natural gas, and coal within its Paleozoic strata, rendering it a focal area in energy-related geological ...
Yuxia Wang, Junfeng Ren, Heng Wang, Jing Luo, Lifa Zhou, Jiayi Wei   +5 more
doaj   +1 more source

The Early to Middle Triassic continental–marine transition of NW Bulgaria: sedimentology, palynology and sequence stratigraphy

Geologica Carpathica, 2018
Sedimentary facies and cycles of the Triassic continental–marine transition of NW Bulgaria are documented in detail from reference sections along the Iskar river gorge between the villages of Tserovo and Opletnya.
Ajdanlijsky George, Götz Annette E., Strasser André   +2 more
doaj   +1 more source

Quantification of dryland depositional environments across contrasting fluvio‐aeolian and fluvio‐lacustrine transects: An integrated subsurface and outcrop analogue study of the Organ Rock Formation, Utah, USA

Sedimentology, EarlyView.
ABSTRACT The standard subdivision of a distributive fluvial system (DFS) into proximal, medial and distal zones is typically based on the proportion of channel bodies and/or the degree of channel amalgamation, reflecting a downstream fining trend towards a mud‐prone terminal pinch‐out.
Oliver Button, Charlotte L. Priddy, Ross P. Pettigrew, Rachel Brackenridge, Ben A. Kilhams, John A. Howell   +5 more
wiley   +1 more source

Downcurrent variation in submarine channel‐fill architecture from the shelf to upper slope

Sedimentology, EarlyView.
ABSTRACT The transition between the shelf and the upper slope is often considered an area of sediment bypass, where steeper gradients increase flow velocities and maintain particles in suspension. In addition to transferring sediments into deeper basins, upper‐slope areas can also host channelised submarine deposits.
Moreno Pizzutto, Fabrizio Felletti, Adam McArthur, Mattia Marini, George Pantopoulos, Daniele Invernizzi, Chiara Zuffetti   +6 more
wiley   +1 more source

Mixed continental-marine biotas following the Permian-Triassic mass extinction in South and North China

, 2017
Correlation between marine and continental Permian-Triassic (P-Tr) strata is crucial for full understanding of the nature of this global extinction event, but it has proved difficult to achieve.
Yu, Jianxin, Huang, Yunfei, Benton, Michael J., Tong, Jinnan, Chu, Daoliang, Jianxin Yu, Michael J. Benton, Jinnan Tong, Daoliang Chu, Yunfei Huang   +9 more
core   +1 more source

Optimization and application of hydraulic fracture propagation in carbonaceous and siliceous shales of marine-continental transition facies

Meikuang Anquan
Aiming at the differences in mechanical properties of carbonaceous and siliceous shale rocks in transitional facies, a hydraulic fracturing model was established using the finite element ABAQUS numerical simulation software. The influence of lithological differences and fracturing parameters on the characteristics of hydraulic fracture propagation was ...
Bing LI, Haifeng ZHAO, Lingpeng MENG, Yalong HE, Jianjun WU   +4 more
openaire   +1 more source

Gravel and sand barrier preservation at geological (Cenozoic) timescales: Insights from the southern Namibia continental shelf

Sedimentology, EarlyView.
ABSTRACT An apparent disconnect exists between the morphology and behaviour of modern coastal barriers and barrier‐associated sediments preserved in the geological record, reflecting modification and selective preservation over geological timescales.
Andrew Green, Andrew Cooper, Marinja Bester, Lynette Kirkpatrick   +3 more
wiley   +1 more source

Sedimentary environment and facies types of Eocene Baoshi Formation in Pingbei area, Pinghu slope belt, Xihu Sag, East China Sea Basin

Shiyou shiyan dizhi
The unclear understanding of the sedimentary environment and facies of the Baoshi Formation in the Pingbei area of the Pinghu slope belt, Xihu Sag, East China Sea Basin, has restricted the evaluation of the Baoshi Formation reservoirs and source rocks in
Yiming JIANG, Hong ZHAO, Xianjun TANG, Xue JIANG, Zhenzhong XU   +4 more
doaj   +1 more source

Sedimentary facies analysis and biostratigraphical implications of the continental-marine sediments of Central-West Crete (Selli section, Rethymnon)

, 2001
Alluvial/floodplain deposits in its lower part and shallow marine clastics and carbonates in its upper part dominate the Selli Section. The marine facies gradually increase in volume upwards. This reflects an important marine transgression.
Triantaphyllou, M.V., Drinia, H., Dermitzakis, M.D.   +2 more
core   +1 more source

Pore Structure and Fractal Characteristics of Inter-Layer Sandstone in Marine–Continental Transitional Shale: A Case Study of the Upper Permian Longtan Formation in Southern Sichuan Basin, South China

Fractal and Fractional
With the evolution of unconventional oil and gas exploration concepts from source rocks and reservoirs to carrier beds, the inter-layer sandstone carrier bed within marine–continental transitional shale strata has emerged as a significant target for oil ...
Jianguo Wang, Jizhen Zhang, Xiao Xiao, Ya’na Chen, Denglin Han   +4 more
doaj   +1 more source