A process-based model for non-equilibrium clumped isotope effects in carbonates
نویسندگان
چکیده
منابع مشابه
A process-based model for non-equilibrium clumped isotope effects in carbonates
Article history: Received 30 May 2015 Received in revised form 26 August 2015 Accepted 28 September 2015 Available online xxxx Editor: H. Stoll
متن کاملMethane seep carbonates yield clumped isotope signatures out of equilibrium with formation temperatures
Methane cold seep systems typically exhibit extensive buildups of authigenic carbonate minerals, resulting from local increases in alkalinity driven by methane oxidation. Here, we demonstrate that modern seep authigenic carbonates exhibit anomalously low clumped isotope values (Δ47), as much as ∼0.2‰ lower than expected values. In modern seeps, this range of disequilibrium translates into appar...
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با توجه به تحریم های بین المملی علیه صنعت بیمه ایران امکان استفاده از بازارهای بین المملی بیمه ای برای نفتکش های ایرانی وجود ندارد. از طرفی از آنجایی که یکی از نوآوری های اخیر استفاده از بازارهای مالی به منظور ریسک های فاجعه آمیز می باشد. از اینرو در این پایان نامه سعی شده است با استفاده از این نوآوری ها با طراحی اوراق اختیارات راهی نو جهت بیمه گردن نفت کش های ایرانی ارائه نمود. از آنجایی که بر...
Statistical clumped isotope signatures
High precision measurements of molecules containing more than one heavy isotope may provide novel constraints on element cycles in nature. These so-called clumped isotope signatures are reported relative to the random (stochastic) distribution of heavy isotopes over all available isotopocules of a molecule, which is the conventional reference. When multiple indistinguishable atoms of the same e...
متن کاملClumped isotope analysis of carbonates: comparison of two different acid digestion techniques.
RATIONALE The kinetic nature of the phosphoric acid digestion reaction enables clumped isotope analysis of carbonates using gas source isotope ratio mass spectrometry (IRMS). In most laboratories acid digestions are performed at 25°C in sealed vessels or at 90°C in a common acid bath. Here we show that different Δ47 results are obtained depending on the digestion technique employed. METHODS S...
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ژورنال
عنوان ژورنال: Earth and Planetary Science Letters
سال: 2015
ISSN: 0012-821X
DOI: 10.1016/j.epsl.2015.09.042