Results 91 to 100 of about 238,060 (300)

Mechanisms of near‐normal sea water dolomitisation: Mesohaline‐reflux or syn‐depositional?

The Depositional Record, EarlyView.
This study investigates the dolomitisation of the Eocene Dammam Formation on the Arabian Plate using petrographic, mineralogical, geochemical and isotopic analyses. The findings reveal two distinct dolomite types, formed primarily through normal‐to‐mesohaline sea water dolomitisation, challenging previous models such as sabkha‐meteoric mixing.
Misbahu Abdullahi, Adhipa Herlambang, Khalid Al‐Ramadan, Ardiansyah Koeshidayatullah   +3 more
wiley   +1 more source

The oldest Brazilian snakes from the cenomanian (Early Late Cretaceous) [PDF]

, 2014
South American Mesozoic snake diversity is mostly represented by genera from the Cenomanian (Najash), Santonian- Campanian (Dinilysia), and Campanian-Maastrichtian (Alamitophis, Patagoniophis, Rionegrophis, and Australophis) of Patagonia, Argentina.
Albino, Adriana Maria, Hsiou, Annie, Medeiros, Manuel, Santos, Ronny   +3 more
core   +1 more source

Sediment‐stressed reefs over the past 420 Myr

The Depositional Record, EarlyView.
In order to fully elucidate the relationship between siliciclastic sedimentation and reef development, there needs to be a significant step change in how we record ancient and recent reefs. Only through the collection of constrained quantitative data, we can progress beyond the largely conjectural associations postulated for many ancient reefal systems.
Tanja Unger, Stephen W. Lokier, Markus Aretz, Matthieu Saillol, Adrian Immenhauser   +4 more
wiley   +1 more source

Sedimentation of the Lower Cretaceous Xiagou formation and Its Response to Regional Tectonics in the Qingxi Sag, Jiuquan Basin, NW China [PDF]

, 2014
Under the constraint of an isochronous sequence stratigraphic framework, sediment infill of the Xiagou Formation reflects the overall control of dynamic tectonic movements and episodic sedimentations in the Qingxi Sag.
Chen, Si, Gan, Huajun J., Jin, Siding D., Lv, Zhenyu Y., Wang, Hua, Wei, Jun   +5 more
core   +1 more source

Carbonate sedimentology: An evolved discipline

The Depositional Record, EarlyView.
Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase, studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases.
Noel P. James, Peir K. Pufahl
wiley   +1 more source

The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian-Berriasian of Feodosiya region (Eastern Crimea) [PDF]

, 2019
This article is concerned with nannofossil study of Tithonian-Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri minor, one of the potential marker-
Arkadiev, V., Baraboshkin, E., Concheyro, Graciela, Guzhikov, A., Lescano, Marina Aurora   +4 more
core   +1 more source

Deciphering depositional controls and evolution of a lacustrine supradetachment basin through facies analysis: Gördes Basin, Western Türkiye

The Depositional Record, EarlyView.
The lacustrine Gördes Supradetachment Basin was developed along the Simav detachment fault during postorogenic extension in the north of the Menderes Massif in western Anatolia. The basin‐fill succession is represented by alluvial fan, Gilbert‐type delta, shoal‐water delta, foreshore, shoreface, offshore‐transition and peat‐forming mire deposits.
Ayhan Ilgar, Alper Bozkurt, Tolga Esirtgen, Ali Ergen, Ercan Tuncay, Sema Çobankaya   +5 more
wiley   +1 more source

Fault Slip and Exhumation History of the Willard Thrust Sheet, Sevier Fold‐Thrust Belt, Utah: Relations to Wedge Propagation, Hinterland Uplift, and Foreland Basin Sedimentation [PDF]

, 2019
Zircon (U‐Th)/He (ZHe) and zircon fission track thermochronometric data for 47 samples spanning the areally extensive Willard thrust sheet within the western part of the Sevier fold‐thrust belt record enhanced cooling and exhumation during major thrust ...
Barber, D. E., Eleogram, Bryan, Kelley, Shari, Stockli, Daniel F., Wells, Michael L., Yonkee, W. A.   +5 more
core   +2 more sources

Controlling factors and evolution of reservoirs in continental rift lacustrine carbonate factory: insight from the cretaceous ITP-BVE formation in Brazil’s Santos Basin

Frontiers in Earth Science
The Cretaceous Itapema and Barra Velha Formations in Brazil’s Santos Basin represent a rare giant rift lacustrine carbonate factory with considerable potential for oil and gas exploration.
Mengying Yang, Mengying Yang, Xiucheng Tan, Xiucheng Tan, Fang Xu, Duo Hao, Junfeng Zhao, Chenqing Li, Jixin Huang, Peijia Li, Peijia Li   +10 more
doaj   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering, EarlyView.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source