Results 111 to 120 of about 1,764 (217)

Lithofacies paleogeography of the Ordovician and its petroleum exploration potential in the Middle-Upper Yangtze Area, South China

Petroleum
Based on the drilling, logging and field analysis, this paper discusses the lithofacies paleogeography of the Ordovician and its petroleum potential in the Middle-Upper Yangtze Area, South China.
Wenzheng Li, Hua Jiang, Xiaodong Fu, Yuan He, Mingfeng Gu, Nan Su, Shiyu Ma, Shugen Liu, Yongxiao Wang, Xuefei Yang   +9 more
doaj   +1 more source

Characteristics, distribution, and origin of ferruginous deposits within the Late Ordovician glaciogenic setting of Arabia. [PDF]

Sci Rep, 2023
Alqubalee A, Salisu AM, Bello AM, Al-Hussaini A, Al-Ramadan K.   +4 more
europepmc   +1 more source

The Pre-Variscan sequence of the Carnic Alps [PDF]

, 2015
The Pre-Variscan sequence of the Carnic Alps includes rocks deposited between the Middle Ordovician and the early Late Carboniferous, and represents one of the most continuous sequence of the world in that time interval.
Corradini, C, Pondrelli, M, Schönlaub, HP, Suttner, T J.   +3 more
core  

Ordovician-Silurian true polar wander as a mechanism for severe glaciation and mass extinction. [PDF]

Nat Commun, 2022
Jing X, Yang Z, Mitchell RN, Tong Y, Zhu M, Wan B.   +5 more
europepmc   +1 more source

Bioestratigrafía (graptolitos) del límite Ordovícico-Silúrico en los Pirineos orientales (curso alto del río Segre, Lleida) [PDF]

, 2017
Se presenta una sección de pizarras negras graptolíticas donde, por vez primera en España, se registra de manera continua el límite Ordovícico-Silúrico. El perfil se localiza al este de Estana (Lleida), en la Zona Axial pirenaica. El límite se localiza 2,
Gutiérrez Marco, Juan Carlos, Roqué Bernal, Josep   +1 more
core   +1 more source

Geochemical Changes in the Late Ordovician to Early Silurian Interval in the Northern Margin of the Upper Yangtze Platform, Southern China: Implications for Hydrothermal Influences and Paleocean Redox Circumstances. [PDF]

ACS Omega, 2023
Fu X, Liu X, Xiong S, Li X, Wu Q, Xiao B.   +5 more
europepmc   +1 more source

Geology as a "local" science [PDF]

, 2010
Entendre i descriure la història de la Terra és un dels objectius finals de la geologia. La part de la geologia anomenada estratigrafia ha treballat sempre, i ho continua fent, buscant els llocs adients per a definir el millor coneixement que tenim de ...
Reguant i Serra, Salvador
core  

Shared patterns in body size declines among crinoids during the Palaeozoic extinction events. [PDF]

Sci Rep, 2021
Salamon MA, Brachaniec T, Kołbuk D, Saha A, Gorzelak P.   +4 more
europepmc   +1 more source

Truncated bimodal latitudinal diversity gradient in early Paleozoic phytoplankton. [PDF]

Sci Adv, 2021
Zacaï A, Monnet C, Pohl A, Beaugrand G, Mullins G, Kroeck DM, Servais T.   +6 more
europepmc   +1 more source

A fossil proof for the origin of the Hirnantian glaciomarine record in Bulgaria: A preliminary result

Review of the Bulgarian Geological Society
The Sirman Formation in the Svoge Unit is built of Hirnantian diamictites, a product of the Gondwana glaciation at the end of the Ordovician. One subangular lonestone of light gray sandstone of size of about 1 cm was found in the lower part of the formation.
Sachanski, V., Gutiérrez-Marco, J. C., Georgiev, S., Lakova, I., Yanev, S.   +4 more
openaire   +2 more sources