Results 51 to 60 of about 730,496 (259)

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Introducing standardized field methods for fracture-focused surface process research [PDF]

Earth Surface Dynamics
Rock fractures are a key contributor to a broad array of Earth surface processes due to their direct control on rock strength as well as rock porosity and permeability.
M. C. Eppes, A. Rinehart, J. Aldred, S. Berberich, M. P. Dahlquist, S. G. Evans, R. Keanini, S. E. Laubach, F. Moser, M. Morovati, S. Porson, M. Rasmussen, U. Shaanan   +12 more
doaj   +1 more source

Geomechanical Characteristics and Stimulation of Dibei Deep Tight Sandstone Reservoirs in the Kuqa Depression of Tarim Basin

Geofluids, 2023
Facing the problem of increased production of deep tight gas reservoirs, this study takes the Dibei gas reservoir in Tarim Basin as an example, carries out geomechanical research, and reveals the rock mechanical properties, in situ stress, and fracture ...
Ke Xu, Haijun Yang, Hui Zhang, Zhimin Wang, Lu Fang, Guoqing Yin, Haiying Wang   +6 more
doaj   +1 more source

Integrated microanatomy and microstructure of the maxillary tooth plate reveal a reinforced feeding system and tougher diet in Late Triassic Hyperodapedontinae (Rhynchosauria, Archosauromorpha)

The Anatomical Record, EarlyView.
Abstract Hyperodapedontine rhynchosaurs possessed a unique oral apparatus, long interpreted as an adaptation for processing abrasive and resistant plant material. However, the microanatomical and histological evidence supporting this interpretation remains poorly documented.
Caio A. Scartezini, Pedro L. B. Pruciano, Brodsky D. M. Farias, Marina B. Soares   +3 more
wiley   +1 more source

Exploration methods for granitic natural stones - Geological and topographical aspects from case studies in Finland [PDF]

Bulletin of the Geological Society of Finland, 2014
Regional and local geological constraints for location of natural stone deposits in glaciated terrains of southern and central Finland have been studied and applied to practical exploration for natural stone.
O. Selonen, C. Ehlers, H. Luodes, P. Härmä   +3 more
doaj   +1 more source

Tooth histotype and enameloid microstructure of Priohybodus arambourgi d'Erasmo, 1960 (Elasmobranchii: Hybodontiformes) from the Late Jurassic of northeastern Brazil

The Anatomical Record, EarlyView.
Abstract Sharks possess varied diets and different prey capture mechanisms. As a result, the group exhibits a significant diversity in dental morphology, also reflecting the internal structures of the teeth. Internal dental anatomy points to the existence of three histotypes in elasmobranch phylogeny: orthodont, osteodont, and pseudoosteodont ...
Kelly Roberta da Silva, Valéria Gallo, Estevan Eltink   +2 more
wiley   +1 more source

Investigation of Hot Spring Resources and Tourism Development in Daofu County,Ganzi Prefecture of Sichuan Province

Shuitu baochi yanjiu, 2006
Daofu County is located in the Songpan-Ganzi zone of fold,to the east of Qinghai-Tibet Plateau.There are XianShuihe fracture zone and Yuke fracture zone,which forms many hot spring containing microelement.But,people of the county still live in poverty ...
LI Xian, YIN Ji-cheng
doaj  

Productivity Prediction of Fractured-Vuggy Reservoirs under Time-Varied Flow Rates and Bottom Hole Flow Pressures

Geofluids, 2022
Fracture-vuggy oil reservoirs contain micrometer-sized dissolved secondary pores, fractures, and meter-sized karst caves. Generally, the researches on the flow mechanism of fractured-vuggy reservoirs are based on the assumption of karst cave-fracture ...
Shan Tao, Yandong Xu, Ning Zou, Xin Du, Youzhi Hao   +4 more
doaj   +1 more source

Structure and fracture characterization of the Jizan group: Implications for subsurface CO2 basalt mineralization

Frontiers in Earth Science, 2023
The coastal region of southwest Saudi Arabia contains a thick sequence of Late Oligocene basalts in the Jizan Group, which accumulated along the continental rift that preceded the opening of the Red Sea. These basalts are targeted for the disposal of CO2
Jakub Fedorik, Antoine Delaunay, Giacomo Losi, Yuri Panara, Yuri Panara, Niccolo Menegoni, Abdulkader M. Afifi, Serguey Arkadakskiy, Murtadha Al Malallah, Eric Oelkers, Sigurður R. Gislason, Zeyad Ahmed, Noushad Kunnummal   +12 more
doaj   +1 more source

A new subsampling methodology to optimize the characterization of two-dimensional bedrock fracture networks [PDF]

, 2022
This paper introduces a new subsampling method to determine the empirical relationships between the areal sampling coverage and the topological-geometric parameters resulting from characterization of two-dimensional outcrop fracture networks.
Engström Jon, Skyttä Pietari, Nordbäck Nicklas, Ovaskainen Nikolas   +3 more
core   +1 more source