Results 61 to 70 of about 10,845 (263)

Annual proxy data from Lago Grande di Monticchio (southern Italy) between 76 and 112 ka: new chronological constraints and insights on abrupt climatic oscillations [PDF]

open access: yes, 2014
We present new annual sedimentological proxies and sub-annual element scanner data from the Lago Grande di Monticchio (MON) sediment record for the sequence 76–112 thousand years before present (ka).
Brauer, Achim   +5 more
core   +2 more sources

The Cenomanian–Turonian boundary interval in the Western Canada Foreland Basin: Stratigraphy, geochemistry, geochronology and sea‐level changes recorded in expanded and condensed clastic successions

open access: yesThe Depositional Record, Volume 11, Issue 5, Page 1200-1258, November 2025.
Shallow‐marine mudstone of the Cretaceous Kaskapau Formation in the British Columbia foredeep preserves a 185 m thick record of OAE2. The organic carbon‐isotope and osmium‐isotope excursions can be correlated in detail with other Cenomanian–Turonian boundary sections around the world.
A. Guy Plint   +12 more
wiley   +1 more source

Microfacies Analysis and diagenesis process of Hartha Formation East Baghdad oilfield, center Iraq

open access: yesAcademic Science Journal
This study focused on interpreting the carbonate microfacies of Hartha Formation and the impact of diagenesis processes in selected wells of East Baghdad oil field. A total of 33 thin sections were examined from cutting and core samples.
Afnan Munther   +1 more
doaj   +1 more source

Microfacies and Diagenetic Fabric of the Lockhart Limestone, Kotal Pass Section, Northeast of Kohat, Pakistan [PDF]

open access: yesInternational Journal of Economic and Environment Geology, 2016
The present study is intended to describe the carbonate microfacies of the Paleocene Lockhart Limestone in area northeast of the Kohat City. The analyzed limestone in the area is 65m thick and predominantly medium to thick bedded, nodular to brecciated ...
Muhammad Waseem Khan   +2 more
doaj  

Facies Modelling of Mishrif Formation in Selected Wells of Tuba Oil Field, Southern Iraq [PDF]

open access: yes, 2018
The current study includes building a 3D geological facies model of the Mishrif Formation (Cenomanian-Early Turonian) in Tuba oilfield, southern Iraq. Microfacies study and core samples examination reveals the occurrence of six facies associations within
J, M. (Mustafa), Mahdi, T. A. (T)
core   +1 more source

Inner Asian Agropastoralism Within the Mongol Empire: Multi‐Proxy Investigations at Sel'Ungur Cave, Kyrgyzstan

open access: yesGeoarchaeology, Volume 40, Issue 6, November/December 2025.
ABSTRACT Agropastoralism has been a widespread subsistence strategy in Central Asia from prehistory to the present. While significant research has aimed at understanding past agropastoral communities in the region, reconstructing a generalized economic model remains challenging due to the complex topographic and ecological conditions, as well as its ...
G. Brancaleoni   +13 more
wiley   +1 more source

Sedimentology and magnetic susceptibility of the Couvin Formation (Eifelian, South Western Belgium): Carbonate platform initiation in a hostile world [PDF]

open access: yes, 2007
The Eifelian of Belgium is mainly characterised by a mixed siliciclastic-carbonate sedimentation on a ramp profile. In this context, the Couvin Formation is the more important and remarkable exception.
Boulvain, F., Mabille, C.
core  

Varved sediment responses to early Holocene climate and environmental changes in Lake Meerfelder Maar (Germany) obtained from multivariate analyses of micro X-ray fluorescence core scanning data [PDF]

open access: yes, 2017
We present an early Holocene record from Lake Meerfelder Maar in Germany for in-depth interpretation of depositional changes in annually laminated lake sediments as proxies for climatic and local environmental changes.
Aitchison   +31 more
core   +1 more source

Pore Structure of Tight Sandstones With Different Sedimentary Microfacies in the Chang 6–Chang 9 Layers, Triassic Yanchang Formation, Wuqi Area, Ordos Basin

open access: yesEnergy Science &Engineering, Volume 13, Issue 10, Page 4900-4916, October 2025.
Taking the Chang 6–Chang 9 layers in the Wuqi area of the Ordos Basin as a case study, this study investigates the pore characteristics of tight sandstones formed under different sedimentary microfacies. The results indicate that tight sandstones associated with distinct sedimentary microfacies exhibit significant variations in pore types, pore size ...
Liling Zhang   +7 more
wiley   +1 more source

Caracterização de Microfácies Sedimentares em Folhelhos da Formação Ponta Grossa (Devoniano) na Borda Leste da Bacia do Paraná [PDF]

open access: yesAnuário do Instituto de Geociências, 2011
Este estudo objetiva a caracterização de microfácies em afloramentos da borda Leste da bacia do Paraná (34 amostras) representando um trato de sistema transgressivo (20 amostras da parte inferior do Membro Jaguariaíva) e um trato de sistema de mar alto ...
Thiago Gonçalves Carelli   +1 more
doaj  

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