Results 51 to 60 of about 203,767 (309)
The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Paul (Mitch) Harris
wiley +1 more source
Detrital events within pelagic deposits of the Umbria-Marche basin (Northern Apennines, Italy). Further evidence of Early Cretaceous tectonics [PDF]
Re-sedimented deposits characterize different stratigraphical intervals in the pelagic successions of the Umbria-Marche-Sabina Domain (Central and Northern Apennines, Italy).
CIPRIANI, ANGELO+3 more
core +1 more source
Microbialites are common throughout the rock record and key to our understanding of Earth history, yet a relatively common microscopy technique—cathodoluminescence (CL)—has not previously been leveraged to understand them. In this contribution, we examine microbialites of varying ages (modern to Proterozoic) with CL and report on the patterns and ...
Cedric J. Hagen+11 more
wiley +1 more source
Bahaman patch reefs: Numerous and neglected
Abstract Phanerozoic patch reefs are extensively studied because they are abundant and are potential reservoirs for valuable fluids. In contrast, geologic studies of modern reefs have largely focused on platform margins, leaving patch reefs comparatively neglected. What conditions favour patch‐reef development?
Paul Enos, Clay Robertson
wiley +1 more source
Fossil biomass preserved as graphitic carbon in a late paleoproterozoic banded iron formation metamorphosed at more than 550°C [PDF]
Metamorphism is thought to destroy microfossils, partly through devolatilization and graphitization of biogenic organic matter. However, the extent to which there is a loss of molecular, elemental and isotope signatures from biomass during high ...
De Gregorio, BT+9 more
core +2 more sources
El objetivo de este trabajo es identificar y caracterizar brevemente las maneras en que los juristas entienden el carácter prima facie de una norma. Para ello reconstruiré los dos sentidos que la literatura especializada usualmente le atribute: i) como una forma de presentar un problema de falta de información sobre el alcance de la norma (prima facie ...
openaire +2 more sources
Water pathways and ancient lakes: Flowing towards new models to unravel the past
Abstract Significant progress has been made in understanding lake basin evolution through climatic and tectonic changes using sedimentology, sequence stratigraphy, geochemistry, hydrology and watershed characteristics to interpret three main lake basin types: overfilled, balanced‐fill and underfilled, including fluvio‐lacustrine systems.
Cecilia A. Benavente+2 more
wiley +1 more source
Depositional Patterns of Miocene Facies, Middle Texas Coastal Plain [PDF]
UT ...
Doyle, James David
core +1 more source
The article demonstrates that brine was central for the supply of Ca and B to the studied saline lake. The ion transport occurred probably by thermal springs, while contributions from surface waters cannot be excluded. However, the saturation and syndepositional precipitation of Ca borates were initiated by an arid climate through evaporation, while ...
Nevena Andrić‐Tomašević+8 more
wiley +1 more source
Sedimentology and reservoir properties of tabular and erosive offshore transition deposits in wave-dominated, shallow-marine strata : Book cliffs, USA [PDF]
Acknowledgements and Funding Funding for this study was provided from the Research Council of Norway (Petromaks project 193059) and the FORCE Safari project. The helicopter-LiDAR data was collected by J. Valet and S. Pitiot of Helimap System SA.
Buckley, Simon J.+2 more
core +2 more sources