Results 171 to 180 of about 2,057,899 (328)

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson   +3 more
wiley   +1 more source

Microbial mats in dinosaur ichnocoenoses

open access: yesSedimentology, EarlyView.
ABSTRACT Until now, the significance of microbial mats in preservation of dinosaur tracks and in reconstructing the palaeoenvironment in which dinosaurs roamed was rarely studied. Dinosaur tracks are commonly found close to ancient aquatic bodies where moist sediment had once allowed footstep registration.
Nora Noffke   +3 more
wiley   +1 more source

Microbial mats and thalassinid shrimp: Spatial and geochemical interactions in a modern intertidal environment

open access: yesSedimentology, EarlyView.
ABSTRACT This research examines the spatial and geochemical interactions between mat‐forming microorganisms and thalassinid shrimp in an intertidal flat situated on the shores of Willapa Bay, Washington, USA. The study serves as a contemporary analog for the relationships between mats and burrowing organisms in deep time.
Brette S. Harris   +9 more
wiley   +1 more source

The Seismic Expression of Core Complex‐Style Extensional Detachment Faults in Rifted Margins

open access: yesTerra Nova, EarlyView.
ABSTRACT The identification of core complex‐style extensional detachment faults (CCDFs) in rifted margins is crucial for accurately restoring their stratigraphic and thermal histories. Yet recognising CCDFs in seismic reflection images is challenging due to their faint topographic expression; the lack of associated abrupt offset in seismic reflections;
Pauline Chenin   +3 more
wiley   +1 more source

Reconstruction of an orbital fracture in a mare using a 3D‐printed patient‐specific implant

open access: yesVeterinary Surgery, EarlyView.
Abstract Objective To describe surgical repair of an orbital wall fracture communicating with the caudal maxillary sinus using a three dimensional (3D)‐printed, patient‐specific implant (PSI). Study design Case report. Animal A 25‐year‐old Haflinger mare (370 kg). Methods The mare presented with severe chemosis and emphysema of the left upper and lower
Jennifer Gernhardt   +5 more
wiley   +1 more source

Assessment of Seismic Performance and Structural Health Monitoring of a Retrofitted Reinforced Concrete Structure with Polyurethane-Based Interventions and Vertical Greenery Systems. [PDF]

open access: yesPolymers (Basel)
Rousakis T   +13 more
europepmc   +1 more source

Seismology and seismic hazard [PDF]

open access: yes, 2008
Burton, PW, Peiris, N, Rossetto, T
core  

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