نتایج جستجو برای: carbonate rocks
تعداد نتایج: 45550 فیلتر نتایج به سال:
The Cretaceous Western Interior Seaway Drilling Project was begun in 1991 under the auspices of the U.S. Continental Scientific Drilling Program. It was intended to be a multidisciplinary study of Cretaceous carbonate and silicicl.tic rocks in cores from bore holes along a transect across the Cretaceous Western Interior Seaway. The study focuses on middle Cretaceous (Cenomanian to Campanian) st...
Beach rock has only rarely been observed in the coasts. It is a hard costal sedimentary formations consisting of various beach sediments, lithified through the precipitation of carbonate cements. One such formation is noted on the South East Coast of Tamilnadu, India. The objective of this contribution is to collect and review information on reported occurrences, characteristics and formation m...
Carbon capture and storage (CCS) provides a solution toward decarbonization of the global economy. The success of this solution depends on the ability to safely and permanently store CO2 This study demonstrates for the first time the permanent disposal of CO2 as environmentally benign carbonate minerals in basaltic rocks. We find that over 95% of the CO2 injected into the CarbFix site in Icelan...
The determination of fluid flow properties in carbonate rocks is strongly affected by heterogeneity. This paper presents a case study that describes the heterogeneity of a carbonate sample. Then, through multi-scale x-ray CT imaging, core panoscopy, a base flow unit in the sample was selected for property computation. Volumes scanned at different resolutions and fields of view that are spatiall...
Introduction: Mars atmospheric pCO2 levels between 4.5-3.8 Ga have commonly been estimated at 13 bar [1,2] based on the existence of fluvial features or sedimentary rocks on the surface of Mars. Most of the original atmospheric CO2 (90-95%) has been lost through impact erosion, sputtering processes associated with the solar wind and sequestration within the crust [3]. This has been correlated w...
the bulk of the world's phosphate reserves is located in sedimentary horizons that contain appreciable amounts of carbonate. during beneficiation of phosphate rocks, huge amounts of oversize phosphate rocks are rejected from crushers. this reject also mostly contains low tricalcium phosphate and high carbonate content. in this study, experiments have been carried out to reduce/eliminate carbona...
Wray, S. L. Murchie, B. L. Ehlmann, R. E. Milliken, K. D. Seelos, E. Z. Noe Dobrea, J. F. Mustard, and S. W. Squyres, Department of Astronomy, Cornell University, Ithaca, NY 14853, USA ([email protected]), JHU/Applied Physics Lab, Laurel, MD, USA, IAS/Univ. Paris, Orsay, France, Univ. Notre Dame, Notre Dame, IN, USA, Planetary Science Institute, Tucson, AZ, USA, Brown Univ., Providence, R...
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