Results 61 to 70 of about 9,661 (202)

Geology of the Mt. Cosce sector (Narni Ridge, Central Apennines, Italy) [PDF]

, 2016
This paper is companion to a 1:15,000 scale geological map of the southern sector of the Narni Range in Central Italy. This sector of the Apenninic Chain was affected by the western Tethyan rifting stage during the Early Jurassic, and the inherited ...
Cipriani, Angelo
core   +1 more source

Ichnological insights into deoxygenation across the Cenomanian–Turonian Boundary Oceanic Anoxic Event 2 in the northern extent of Western Interior Seaway (west‐central Alberta)

Sedimentology, Volume 73, Issue 2, Page 355-390, February 2026.
ABSTRACT In‐depth ichnological and sedimentological analyses of the Cenomanian–Turonian boundary Oceanic Anoxic Event (OAE2) from the Western Interior Seaway of west‐central Alberta reveal a persistent physico‐chemically stressed setting. The interval is characterised by a dominantly diminutive and diminished ichnological assemblage, with familiar ...
Sara K. Biddle, Murray K. Gingras
wiley   +1 more source

Cenozoic sedimentary and volcanic rocks of New Zealand: A reference volume of lithology, age and paleoenvironments with maps (PMAPs) and database. [PDF]

, 2015
This volume presents descriptive geological data and text about each Cenozoic sedimentary and volcanic geological unit to formation and member level (in some cases) exposed on land in New Zealand, including their lithology, stratigraphic age and inferred
Kamp, Peter J.J., Tayler, Michael J.S., Vincent, Kirsty A.   +2 more
core   +1 more source

New Geochronological Constraints on the Late Palaeozoic Tarija Basin, Southern Bolivia: Tectonic and Palaeoclimatic Implications

Terra Nova, Volume 38, Issue 1, Page 9-18, February 2026.
ABSTRACT The Carboniferous‐Permian Tarija basin of southern Bolivia evolved under major tectonic and climatic influence. The timing of transition from glacially influenced to arid conditions, after the Gondwanide tectonic event, has been based mainly on palynological correlations.
Felipe R. Ferroni, Peter G. DeCelles, Jaime Oller Veramendi, Juan Andrés Dahlquist, Mercedes di Pasquo   +4 more
wiley   +1 more source

Lithofacies of Upper Ordovician Wufeng Formation in Sichuan Basin and its periphery

Shiyou shiyan dizhi, 2020
The Upper Ordovician Wufeng Formation was divided into the shale and Guanyinqiao sections. Based on the comparative analysis of shale gas drilling cores and the whole rock mineral composition of the Wufeng Formation in the Sichuan Basin and its periphery,
Wei DU, Zongquan HU, Guangxiang LIU, Tong ZHU, Haikuan NIE, Caina YAN, Guanping WANG   +6 more
doaj   +1 more source

Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil

The Anatomical Record, Volume 309, Issue 1, Page 5-32, January 2026.
Abstract Hybodontiformes was a diverse, successful, and important group of shark‐like chondrichthyans known from a variety of ecosystems. Some representatives of the order had a wide palaeogeographic distribution, as is the case with Priohybodus arambourgi. With a multicuspidate crown, P. arambourgi was the first hybodontiform to develop fully serrated
Estevan Eltink, Kelly Roberta da Silva, Marco Aurélio Gallo de França, Débora Melo Ferrer de Morais, Matías Soto, Christopher J. Duffin   +5 more
wiley   +1 more source

Reservoir heterogeneity in deep marine-continental transitional shales: the role of lithofacies and quality in the coal-bearing longtan formation, central Sichuan basin

Frontiers in Earth Science
Compared with marine shale formations, marine-terrestrial transitional shales exhibit rapid lithofacies changes. This poses significant challenges for the classification of shale lithofacies and the study of their characteristics.
Longyi Wang, Longyi Wang, Longyi Wang, Xizhe Li, Xizhe Li, Xizhe Li, Ya’na Chen, Ya’na Chen, Hongming Zhan, Xiangyang Pei, Yuchuan Chen, Nijun Qi, Nijun Qi, Nijun Qi, Weikang He, Weikang He, Weikang He, Wenxuan Yu, Yaoqiang Lin, Yuhang Zhou, Yuhang Zhou, Yuhang Zhou   +21 more
doaj   +1 more source

Characterizing Geometrical Anisotropy of Petrophysical properties in the middle Shahejie formation, Liaohe Depression, China. [PDF]

, 2016
Knowledge of reservoir body lateral extent is important information for estimation of hydrocarbon initially in place and the recoverable quantity. This study reports a stepwise approach to evaluate geometrical anisotropy of the rapidly changing alluvial ...
Afolabi, Richard Oyekunle, Rotimi, Oluwatosin J., Zhenli, Wang   +2 more
core  

Beachrock formation influenced by co‐seismic deformation and relative sea‐level changes during the Holocene near the Gulf of Saros, Türkiye (NE Aegean Sea)

Boreas, Volume 55, Issue 1, Page 231-257, January 2026.
This is the first proof of beachrock found on the nearshore of the Gulf of Saros. Beachrock generation was influenced by tectonic activity, geomorphological processes, and sedimentation. The Late Holocene beachrock deposits were altered by co‐seismic deformation.
Ufuk Tari
wiley   +1 more source

Advances and trends of non-marine shale sedimentology: A case study from Gulong Shale of Daqing Oilfield, Songliao Basin, NE China

Petroleum Exploration and Development
This study took the Gulong Shale in the Upper Cretaceous Qingshankou Formation of the Songliao Basin, NE China, as an example. Through paleolake-level reconstruction and comprehensive analyses on types of lamina, vertical associations of lithofacies, as ...
Longde SUN, Rukai ZHU, Tianshu ZHANG, Yi CAI, Zihui FENG, Bin BAI, Hang JIANG, Bo WANG   +7 more
doaj   +1 more source