Results 51 to 60 of about 1,090,815 (252)

Data-Driven Classification and Logging Prediction of Mudrock Lithofacies Using Machine Learning: Shale Oil Reservoirs in the Eocene Shahejie Formation, Bonan Sag, Bohai Bay Basin, Eastern China

open access: yesMinerals
As the world’s energy demand continues to expand, shale oil has a substantial influence on the global energy reserves. The third submember of the Mbr 3 of the Shahejie Fm, characterized by complicated mudrock lithofacies, is one of the significant shale ...
Qiu-Hong Chang   +5 more
semanticscholar   +1 more source

Stratigraphy and development of the Late Miocene-Early Pleistocene Hawke’s Bay forearc basin [PDF]

open access: yes, 2004
A Late Miocene-Early Pleistocene mixed carbonate-siliciclastic sedimentary succession about 2 500 m thick in the Hawke’s Bay forearc basin is the focus of a basin analysis. The area under investigation covers 3 500 km2 of western and central Hawke’s Bay.
Nelson, Campbell S.   +2 more
core  

Cyclostratigraphic Analysis and Depositional Environment Evolution of the Third Member of Eocene Shahejie Formation in the Laizhou Bay Sag, Southern Bohai Bay

open access: yesJournal of Marine Science and Engineering
This study conducts a cyclostratigraphic analysis of the third member of the Eocene Shahejie Formation (Es3) in the Laizhou Bay Sag, Bohai Bay Basin, to investigate the influences of astronomically driven climate variations on sea-level changes ...
Jun-E Ni   +5 more
doaj   +1 more source

Types, characteristics and effects of natural fluid pressure fractures in shale: A case study of the Paleogene strata in Eastern China

open access: yesPetroleum Exploration and Development, 2016
Paleogene organic-rich shales from the Dongying Sag and Zhanhua Sag of Jiyang Depression in Bohai Bay Basin and Northern Jiangsu Basin in Eastern China are studied, to categorize the types and characteristics of natural fluid pressure fractures and their
Cunfei MA   +5 more
doaj   +1 more source

Seasonal Differences in Migration Routes and Stopover Use of Greater Sand Plovers Between Mongolia and the Beibu Gulf Revealed by GPS Tracking

open access: yesEcology and Evolution, Volume 16, Issue 7, July 2026.
GPS‐GSM tracking of Greater Sand Plovers along the East Asian‐Australasian Flyway revealed seasonal differences in migration routes and stopover allocation between the northern Beibu Gulf and Mongolia. Spring northward migration was associated with a higher travel‐to‐stopover ratio, whereas autumn southward migration involved a greater proportion of ...
Lei Xu   +4 more
wiley   +1 more source

Selenium speciation dynamics in the Baltic and North Seas: Competing influences of marine and terrestrial inputs, biological activity, and redox conditions

open access: yesLimnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Despite the importance of coastal areas for the transfer of selenium (Se) from rivers to the open ocean and its bioavailability to food webs, dissolved Se concentrations and speciation in these ecosystems remain poorly understood. We conducted a 3‐yr study with monthly water column sampling at five stations spanning from the North Sea to the ...
Esther S. Breuninger   +5 more
wiley   +1 more source

Spatial modes of suspended sediment concentration in surface water in Bohai Sea and their temporal variations

open access: yesShui kexue jinzhan, 2013
A five years (2000—2004) SeaWiFs satellite dataset is used to investigate the overall pattern of suspended sediments in the Bohai Sea Basin. The dataset consists of 354 charts of suspended sediment concentration (SSC) in surface water,which cannot be ...
PANG Chongguang, YU Wei
doaj   +1 more source

Continental lacustrine fine-grained lithofacies, assemblage and geological significance of unconventional petroleum: A case study of the Paleogene of the 4th member of the Shahejie formation in the Jiyang depression

open access: yesEnergy Exploration & Exploitation, 2023
Taking the upper sub-member of Sha 4 in Well Fanye 1 and Well Niuye 1 in Dongying Sag, Jiyang Depression, Bohai Bay Basin as a typical example, this paper adopts the method of combining macro and micro laminar characterization and complementing each ...
Ying Li   +9 more
doaj   +1 more source

Seasonal Estimates of Nutrient Loading, Sources, and Impacts on Water Availability in Streams Across the Conterminous United States, 2000–2020

open access: yesWater Resources Research, Volume 62, Issue 7, July 2026.
Abstract Excess riverine nutrients can limit water availability for humans and ecosystems. Nutrient monitoring on individual stream reaches provides important information about current and past conditions, yet most river reaches are unmonitored. Additionally, monitored data integrate effects of upstream sources, sinks, and pathways by which nutrients ...
Olivia L. Miller   +8 more
wiley   +1 more source

Geological structure of the forearc basin in central Hawke’s Bay, eastern North Island [PDF]

open access: yes, 2006
Central Hawke’s Bay lies within an extensive forearc basin in eastern North Island that developed during the Late Miocene to Pleistocene. The onshore structural elements of Hawke’s Bay can be classified into four structural domains, each reflecting ...
Kamp, Peter J.J., Bland, Kyle J.
core  

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