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Read "Alteration of ocean crust provides a strong temperature dependent feedback on the geological carbon cycle and is a primary driver of the Sr-isotopic composition of seawater, Earth and Planetary Science Letters" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Sixteen calcium carbonate veins (CCVs) within the igneous basement recovered from both East and Southwest Sub-basin, close to the fossil spreading ridge of the South China Sea during the Integrated Ocean Drilling Program (IODP) Expedition 349 were investigated.
19 Svenja Rausch, Florian Böhm, Wolfgang Bach, Andreas Klügel, Anton Eisenhauer, Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in the past 30 million years, Earth and Planetary Science Letters, 2013, 362, 215CrossRef; 20 Y. Rosenthal, B. Linsley, Encyclopedia of Quaternary Science, 2013, 871CrossRef
Oman Quarries LLC. Oman Quarries LLC(OQ) is another key member of HIG and is one the market leaders in Oman. OQ produces wide range of products derived from limestone (Calcium Carbonate – CaCo3), which is produced at the company’s plant at Samail.
2019-10-16 · Rausch S, Böhm F, Eisenhauer A, Klügel A, Bach W (2011): Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca and Sr/Ca in the past 30 Million years. Goldschmidt Conference, Prague, 15h. Böhm F, Eisenhauer A, Fietzke J, Rausch S, Bach W, Klügel A (2011): Calcium isotope fractionation during dolomite formation.
Strontium isotopes and sedimentology of a marine Triassic succession (upper Ladinian) of the westernmost Tethys, Spain ... Bach, W., Klügel, A., and Eisenhauer, A. (2013): Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in the past 30 million years. Earth and Planetary Science Letters 362, 215-224. doi:10 ...
They made measurements of the magnesium content in calcite veins formed in cracks and voids in ocean ridge flank basalts. On the basis of these results, they conclude that after remaining more or less constant from 170 to about 46 Myr ago, the Mg to Ca ratio in seawater underwent a threefold increase.
Minerals, Critical Minerals and the US Economy.pdf
Elemental concentrations in Phanerozoic sea water are known to fluctuate both in time and space. With regard to carbonates precipitated from marine fluids, elemental concentrations in the carbonate crystal lattice are affected by a complex array of
Title: Petrology and tectonic setting of felsic and mafic volcanic and intrusive rocks in the Finlayson Lake volcanic-hosted massive sulphide (VHMS) district, Yukon, Canada : a record of mid-Paleozoic arc and back-arc magmatism and metallogeny
Read "The effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid/base chemistry: Implications for Eocene and Cretaceous ocean carbon chemistry and buffering, Global Biogeochemical Cycles" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
The tropical Pacific thermocline strength, depth, and tilt are critical to tropical mean state and variability. During the early Pliocene (~3.5 to 4.5 Ma), the Eastern Equatorial Pacific (EEP) thermocline was deeper and the cold tongue was warmer than today, which resulted in a mean state with a reduced zonal sea surface temperature gradient or El Padre.
Slices of granitic crust combined into stable bodies of basement rock called cratons (Fig. 28), upon which all other rocks were deposited.They are composed of highly altered granite and metamorphosed marine sediments and lava flows.The rocks originated from intrusions of magma into the prim- itive ocean crust.
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2016-3-26 · Post-Mesozoic Rapid Increase of Seawater Mg/Ca due to Enhanced Mantle-Seawater Interaction. ... Bach W., Klügel A. & Eisenhauer A. Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in the past 30 million years. Earth Planet. Sci. Lett. 362, ...
27 Nov 2009. 27 Nov 2009 Physiological controls on seawater uptake and calcification in the benthic foraminifer Ammonia tepida L. J. de Nooijer et al.
The onset of pelagic sedimentation attending the radiation of pelagic calcifiers during the Mesozoic was an important divide in Earth ... model calculations of the ratio of dissolved calcium to carbonate ion ... Eisenhauer A (2013) Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in the past 30 million years. ...
History . Most probably the mineral dolomite was first described by Carl Linnaeus in 1768. [non-primary source needed] In 1791, it was described as a rock by the French naturalist and geologist Déodat Gratet de Dolomieu (1750–1801), first in buildings of the old city of Rome, and later as samples collected in the mountains now known as the Dolomite Alps of northern Italy.
2012-8-22 · We have now learned to see in the mantle of waste the record of the destructive action of the agencies of weathering on the rocks of the land surface. Similar records we shall find buried deeply among the rocks of the crust in old soils and in rocks pitted and decayed, telling of old land surfaces long wasted by the weather.
Incorporation of Mg and Sr in calcite of cultured benthic foraminifera: impact of calcium concentration and associated calcite saturation state M. Raitzsch et al. Viewed . Show all Final revised paper only Discussion paper only Total article views: 2,333 ...
Peer reviewed MARUM publications. ... Munhoven, G and Heinze, C (2013) Assessing the potential of calcium-based artificial ocean alkalinization to mitigate rising atmospheric CO2 and ocean ... Rausch, S, Böhm, F, Bach, W, Klügel, A and Eisenhauer, A (2013) Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in ...
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" The most abundant constituents of rocks, comprising about 60% of the total weight of the Earth's crust. There are two major families of feldspar: the orthoclase or potassium feldspar group, which comprises the potassium aluminosilicates, and the plagioclase group, which comprises the aluminosilicates of sodium and calcium."
2018-6-27 · ?php // Plug-in 8: Spell Check // This is an executable example with additional code supplied // To obtain just the plug-ins please click on the Download link $text ...
Svenja, Rausch (15 January 2013) 'Calcium carbonate veins in ocean crust record a threefold increase of seawater Mg/Ca in the past 30 million years', Earth and Planetary Science Letters, Elsevier BV - DOI: 10.1016/j.epsl.2012.12.005
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