U-pb dating calcite

u-pb dating calcite

Can calcite U-Pb be used to constrain the timing of Carlin-type gold deposits?

This study shows that the calcite U-Pb method can be used to constrain the timing of Carlin-type gold deposits and successive hydrothermal events. You do not currently have access to this article.

Can calcite be used to constrain the ages of hydrothermal processes?

Recent advances in U-Pb methods show that calcite can be used to constrain the ages of hydrothermal processes, but few studies have been applied to ore deposits.

Are calcite cements in the Urgonian microporous limestone of southeastern France U-Pb-dated?

In this study we performed absolute U-Pb dating of calcite cements occurring in the Urgonian microporous limestone (northern Tethys margin) of southeastern France.

Can geochronometry be used to date diagenetic carbonates?

Although most of these processes are thought to occur during early diagenesis, recent studies have shown that they could also take place later. U-Pb radiometric dating is the only absolute geochronometer applicable to diagenetic carbonates.

How were Carlin-type gold deposits in the golden triangle formed?

Combined with existing isotopic ages in the region, these new ages lead us to propose that Carlin-type gold deposits in the Golden Triangle formed during two metallogenic episodes in extensional settings, associated with the late Triassic Indochina orogeny and early Cretaceous paleo-Pacific plate subduction.

Can calcite be used to constrain the ages of hydrothermal processes?

Recent advances in U-Pb methods show that calcite can be used to constrain the ages of hydrothermal processes, but few studies have been applied to ore deposits.

Are calcite cements in the Urgonian microporous limestone of southeastern France U-Pb-dated?

In this study we performed absolute U-Pb dating of calcite cements occurring in the Urgonian microporous limestone (northern Tethys margin) of southeastern France.

Can geochronometry be used to date diagenetic carbonates?

Although most of these processes are thought to occur during early diagenesis, recent studies have shown that they could also take place later. U-Pb radiometric dating is the only absolute geochronometer applicable to diagenetic carbonates.

Why does rock carbon dominate in diagenetic processes?

Therefore, in any diagenetic process that involves rock–water interaction such as solution–reprecipitation under burial conditions, the relatively heavy rock carbon tends to dominate and to buffer low δ13 C contributions from biological processes.

What stages of diagenesis are carbonate sediments?

That is, carbonate sediments go through early (shallow-burial), middle (deep-burial), and possibly late (uplift and unroofing) stages of diagenesis. Get access to the full version of this content by using one of the access options below.

Are cherts re-equilibrated during diagenesis?

The alternative is that cherts and carbonates have continually re-equilibrated during diagenesis so that the δ18 O compositions represent diagenetic conditions rather than the temperature and isotopic composition of the seawater from which they originated ( Anderson and Arthur, 1983 ). Figure 5.14.

What is the future of geochemical analysis in diagenetic studies?

The continuing development of new instruments and techniques (e.g., the ion probe, clumped isotope analysis) holds great promise for the future of geochemical analyses in diagenetic studies.

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